22LR Precision Shooters Must Watch // Eliminate Cold Bore For Pennies

[@PursuitofAccuracy]

Gents this, as stated in the video, is not a definitive answer to why this happens. Its all just a theory. The bigger part of this is that it hopefully helps someone whos struggling with cold bore already. I encourage everyone to give it a shot and report back here. It has worked for me and several others but thats not a guarantee it would work for you, id be interested in hearing if it did or didnt help you here in the comments!

[@wilfdarr]

"Everybody has straws" Literally illegal in Kanistan... Oh 🇨🇦 🤦‍♂️

[@PursuitofAccuracy]

@@wilfdarr im sure they have some sort of tube that resembles a straw lol

[@wilfdarr]

@@PursuitofAccuracy Ya, I think I found a fuel line that'll work. Still dumb that straws are illegal...

[@CyclopsJoeVideos]

Great video man that’s insane how easily that works

[@EagleEyeShooting]

Theirs many factors that cause cold bore. Up till now, 2K+ rifles built. It's primarily due to tight spots in a barrel. Hence why I have an air gauge tool. Not sure about the moisture, but I see cold bore even here in Arizona. Great thing about this community is we can gather all data together and conclude a fix

[@Jeff-mv4yy]

Hey Kenny, been a fan for a long time . I’ve seen some of your vids where you demonstrate very little if any cold bore shifts so I know you got a great handle on how to “smith it out”. I’m not understanding how tight spots would change from the cold bore to subsequent shots . Thank you .

[@EagleEyeShooting]

@Jeff-mv4yy moisture plays an effect. But in summary the lube solidifies between shots. Having a tight spot in a barrel creates a friction spot area in a barrel. While in consecutive shots, the lubricant on the ammo will help over come this friction coefficient, until the wax/lube solidifies again from a period of time. It would be the same as you firing a spit wad in a new straw, then cink it and see how much more force it takes to shoot one out.

[@MysticPrecision]

@@EagleEyeShooting Moisture in the air and bore is good (less/no cold bore shift)... dry bore and air is bad (pronounced cold bore shift). Heat can also play a factor ie leaving a barrel in the shade vs in the sun

[@Jeff-mv4yy]

Thank you Kenny .

[@John-uo1qf]

Now we need to see Kenny run this same test in the dry AZ air 🤷🏼‍♂️

[@brucewalf7864]

Hey Josh, I use Eley Match, SK Standard Plus, and CCI Standard Target. All ammo dose the cold bore shot in my rifles. Have seen that cleaning the bore lessens the effect of the cold bore shot. I am going to try blowing my breath down the bore using a short piece of small diameter clear vinyl tube that is available from most hardware stores. As it's not going to do any harm, and well worth a try.

[@brucewalf7864]

Hello again Josh, I have been out to my gun range a couple of times since seeing you show us the straw technique. I use a 10 inch piece of 3 millimeter clear vinyl tube, and only put the tube in as far as the chamber. (3mm is the internal hole size) I blow 1 breath into the chamber and down the bore of my .22 SAKO P94S just before I start shooting, and it works. No more Cold Bore Flyer. The first shot prints on target at the point of aim, and the same for the rest of the shots for that string. So, I can agree that this technique dose help eliminate a Cold Bore Flyer

[@ronmartblog]

Dude this is the most important video I’ve watched this year!!! Wow - thanks so much brother 🙌🏻🙌🏻🙌🏻🙌🏻

[@abeleski]

Finally the condom i been carrying for years for when I get lucky got used. Thank you

[@PursuitofAccuracy]

Hahahaha

[@JesseLotspeich]

This may be the nugget of info I've been looking for to do better in the Rabbit Hole of 22 bench. Since I shoot a bimonthly bench match with ranges from 75-250, This will be a hard secret to keep if it works and besides I know a bunch of my friends that shoot it also are followers of your channel. Have a great New Years and keep the juice flowing.

[@fasteddie1360]

I've read this theory in forums, but never saw this vid. A couple things I note - 1) for your straw, maybe cut the 'short' end a bit so it fits in the chamber area easily. That would let you be 5-6 inches farther away from the rifle - not look as 'intent'. 2) Can you test this effect with just 'dry air' like with a fan and hose? to eliminate the moisture for comparison. I haven't watched Part 2 yet so maybe these have been addressed ?

[@harmiknersessian4066]

Josh great videos, enjoy every single one, very informative and well done, thanks for your hard work. I tried the straw trick on my FX Impact M3 22 cal. for 3 days, it worked, cold bore shift disappeared. I'm adding a straw to my shooting tools from now on.

[@kajetandziebaj6405]

A while back I had a hunch that its not the temperature but the atmospheric conditions in the barrel that cause the first flyer, thanks for confirming my suspicions, people didn't believe me cause I worded it poorly.

[@bobcole9274]

Great video. Would have liked to see the accuracy added. Thanks for informative videos.

[@markbucko7713]

Very interesting Josh, seems like your on to it. I never would have thought this was the cause . The results don’t lie. Thanks mate

[@PursuitofAccuracy]

Thanks Mark

[@willo7734]

Wow, that’s an awesome find! Glad to know what actually causes that cold bore shot difference.

[@zulumike993]

Love me some scientific method! Thanks for moving the knowledge limit forward on this issue.

[@Cardus501]

Very interesting video. I have to admit I always thought it was a temperature thing.

[@PursuitofAccuracy]

Me too

[@terrywarner8657]

About 25 years ago the long range blackpowder cartridge rifle shooters in Canada found that a puff of breath through a rubber tube into the chamber after each shot improved accuracy. They were shooting duplex black over smokeless loads in 45/90s and 45/100s. In alternating shots there was just enough time to reflexively put that step in the firing point routine while the other shooter got off his shot.

[@TomekLukszaSportShooter]

Very interesting. I'll try the "blowing trick" visiting next time the range. Thanks for the video.

[@patricknolan797]

Several years ago Bill Calfee wrote about moisture in the barrel and how it relates to cold bore. I'm pretty sure the article's in his book The Art of Rimfire Accuracy

[@PursuitofAccuracy]

Been meaning to read that, just never have the time

[@mr.t8830]

I have a cold bore shift on my .243 wonder if this would work on that ? Very interesting well done 👍

[@JZsBFF]

Did it?

[@tacocin]

Who'da thunk it! Excellent info Josh! Appreciate you!👍

[@justinmcbee8881]

Awesome Video KYL Killa!! I have witnessed this work very well.

[@wowguy3562]

Odd, I would have thought pre warming a barrel with a fan might help eliminate a cold bore shot and using a fan between rounds, you basically proved exactly the opposite. Also, standing a rifle straight up on a rack lends to faster barrel cooling, so maybe keeping a barrel level and capping both ends as you have shown might prevent cold bore shift. Thanks for the video brother.

[@7come11two]

Wow. Great presentation, Bro. You look as good as anyone, blowing your barrel. Well, I can think of some ladies who would look better doing it. But this was very informative. We have never known, definitively, what causes cold bore shift. We now have a clearer picture.

[@PursuitofAccuracy]

Honestly i could be totally wrong about why it happens, but its good info going forward in search

[@trevorhawkins8757]

I was always under the impression it was caused by a carbon ring. And once you fired that first shot, the carbon ring warmed up and kind of normalized. Learn something new every day!

[@nelhead4807]

Great idea from the guy that told you this. I’ll try it for myself and see.

[@douglassnyder1292]

Good stuff again. Well presented. I just subbed. Feedback: I have had a problem with cold bore shift on my CZ 455 ever since I got it 7 years ago. Nobody I ever talked to at CZ has ever mentioned the term, nor did any of my friends and spotters at silhouette matches. I just heard it for the first time about 2 weeks ago. I am looking forward to testing this THEORY. Sometimes that 1st shot is 3"-4" off at 50 yds. Crazy. I will check it with my new Garmin chrono. Keep up the good work.

[@jdodd06]

Super interesting. Time to pull out the chrono and do some testing on my end!

[@zahiralhajri8424]

Nice video . Try this test after cleaning the barrel that will be interesting

[@asdfad2132]

Thx for the information. got supersonic bang on every first shot and never knew why. Greetings from germany

[@Chopping_Broccoli]

Shane B at Lapua Ohio demonstrated cold bore shifts (and complete control thereof) with a very short down time (time to reload magazine). He combats it by keeping spent round in chamber and bolt closed while reloading mag for next lot test. This prevents the environmental filter vacuum positioned right above the action from sucking air through the bore and out the action. This leads me to believe that controlling the oxygen in the barrel as opposed to the moisture content may be the key. Much like suppressor first round pop. Obviously keeping the action closed with a spent case inside is not feasible at a match, but the H&S ECI's and something over the muzzle (cot, plug, masking tape, etc) is. I appreciate your efforts and look forward to the next round of testing. I also appreciate a pro like GS sharing his own research.

[@PursuitofAccuracy]

My only issue with that theory is if i leave action open for 30 mins Then blow through the barrel with the straw Then wait 5 mins with action open That would be more than enough time for that air to be displaced with fresh air but not long enough for that air to strip the moisture of that breath. If the MV then is normal i dont think the air would be the major contributor. Ive tested that before but will retest again. We may never truly know, outside of testing in a totally controlled environment its difficult to eliminate the variables

[@Chopping_Broccoli]

@@PursuitofAccuracy I agree. Lots of variables outdoors. Relative humidity, temp, and wind would all contribute to the environment inside the bore and how fast it changes. I’m skeptical how long a breath of moisture really lasts inside the bore; based purely on when I try to fog up my glasses to clean them…not long. Both of your demonstrated methods keep or return the bore to a moist, oxygen depleted state. Is it the moisture or lack of oxygen that eliminates the cold bore? Two variables. Gotta eliminate one to know for sure. Thanks Josh for the great content. Hope to see ya on the firing line again soon.

[@PursuitofAccuracy]

@@Chopping_Broccoli yeah im thinking for test two maybe i can use a spray bottle to wet the bore and see if it also works

[@PursuitofAccuracy]

@@Chopping_Broccoli yes sir, appreciate ya

[@michaelcunningham6641]

I HATE THAT FIRST SHOT ..I will 100% be giving this a try !!.I have a couple 10/22's I built ..I love all your videos !!.. thank you !!!...

[@PursuitofAccuracy]

Thanks brother!

[@lmbear]

I hope you get it figured out man. Glad my rifles are well tuned and they don't exhibit this.

[@PursuitofAccuracy]

Its largely gonna depend on what barrels you have and what ammo your running

[@nickweaver2688]

Excellent video! Great theory and supporting evidence. I'm going to research and work on this. I'll let you know if I come with anything.

[@PursuitofAccuracy]

Thanks, part two coming out today

[@fairviewprecision]

That is really cool!! I’m looking forward to seeing the future tests! Great work,

[@markthibault8579]

Interesting. I'm also curious to see the effect on accuracy if the finger cot is left on the barrel by accident.

[@PursuitofAccuracy]

Greg shoots through his every stage lol. So id say no real effect

[@CaptainSeamus]

Back in the day doing biathalon, never thought about the cap on the bore keeping this down. Just never had a problem with that rifle compared to my hunting rifle. Interesting, to be sure.

[@jeffstephenson4156]

Great video. I learn something every time I watch your videos. Keep it up!!

[@mlone7]

One thing I was wondering with the straw is there is moisture in your breath. I was kind of surprised at the result. There might be another reason why this works and your summation might be wrong but the result works anyway.

[@nelsonm5032]

Amazing, mystery solved i think! cant wait for the follow up video. cheers...

[@1ANeat]

Go to a black powder cartridge match, you blow thru after firing a round for the moisture, fouling. Cool that it works on rimfire

[@MysticPrecision]

Blowing into the bore to maintain consistency and accuracy is a common step with Blackpowder cartridge shooters. Next time, consider shooting at paper at 100yds to 200yds to see if the 'cold bore' shot also changes POI. Varying velocities alone doesn't indicate the that POI will also change ... at least enough to be a problem.

[@PursuitofAccuracy]

I wanted to show it on paper but ran out of cameras and the chrono was more important. In that rifle its certainly enough to see on paper. During the test it actually missed high on the 2" kyl at 100 on the first shot

[@BROTUNED]

Josh that’s awesome man super cool you shared this now I have to try it out. Thanks and another great video.

[@PursuitofAccuracy]

Thanks brother, appreciate ya!

[@robfahnestock6930]

And this video is exactly why I follow you! Very cool!

[@PursuitofAccuracy]

Thanks brother

[@richardmattix5322]

Thanks Josh I will try to keep that info in my old mind at my next match.

[@ianwoodward1554]

Another great vid. Happy New Year mate.

[@lohikarhu734]

This reminded me that big naval guns have used compressed air to blow out the remaining gases after a shot...this probably allows them to get maximum, and stable, muzzle velocity...ive been thinking about a system to clear gases from the barrel of a rifle, between shots...it's tricky, but i think can be done mechanically, and with a, let's say, manual air source...of course, the whole thing ccould be done electrically, but maybe it's sub-optimal to need a battery. Imagine, not just no 'cold bore' issue, but overall more stable velocity, and accuracy. As someone more known than i would say: it's just a thought

[@Jgorelj]

Great info. I’ll be checking this out the next time at the range.

[@pranc236]

Great video josh. Have always wondered about this. I would like to see if the finger glove method works overnight.

[@CutlassOutdoors]

This is awesome! Thank you for sharing.

[@martymar1484]

Can't believe this this is great.. do you think running a dry patch through the barrel

[@PursuitofAccuracy]

A dry patch would likely induce a cold bore as it would remove any moisture in the barrel.

[@Dayattherange]

Josh I absolutely love these data gathering video's I call them. Though this one will cause me much grief. First off a good friend of mine told me 20 yeas ago put a foam ear plug in the end of the barrel when you are done shooting and I thought he was bat crap crazy. Dude do you mean to tell me I need to call this dude and tell him he was RIGHT? I think I would rather go on a 20mile hump with my 70pound alice pack in shorts in South Korea winter. The other thing that makes this video great outside of the nice new room yes I am still drooling over it is the fact of how ridiculous you looked blowing on that straw LOL. You surely deserve for this video to go viral super educational and FUNNY to watch.

[@PursuitofAccuracy]

Haha appreciate ya brother

[@LeviHinds-ux8rj]

I also wonder if this will lessen first round pop with suppressors???

[@theheck123]

this is great info. my factory cz457 has a heck of a cold bore shift using eley ammo. will have to try this hack at the next match.

[@jluvnklee]

Great video! Man I’m glad there are nerds like you doing this stuff so nerds like me can learn from you! Seriously though, I think this nailed it, also brings to mind what Kenny from DPG has said about barrels that have high spots introducing friction requiring more lube/ moisture to overcome the cold bore shot. I suppose starting with the truest barrel possible can minimize if not eliminate cold bore velocity deviation, and of course shooting ammo with lowest standard deviation and extreme spread, ie ammo that is lot tested for your barrel greatly smooth things out. The Pursuit continues! Curious if you took any sniper courses in the Army?

[@PursuitofAccuracy]

Lots of factors and unknowns for sure. I never really did any shooting stuff in the military besides the typical rifle qual

[@Precisionriflesireland]

Excellent bit of information. I’ll test it out here in Ireland 🇮🇪 Will you show what the cold bore is on paper as well. Would make more sense to see the group also 👌💪🇮🇪🍀

[@PursuitofAccuracy]

Yeah sure will, ran out of cameras lol. The thing is certain barrels even with a cold bore will print the same poi because of harmonics. So its just another variable

[@bernardmcdonnell6720]

Good to see you here, at least you won't be laughing when you see me with a straw!

[@rickmoore6527]

Josh, I appreciate the scientific approach that you employ to test your hypothesis. Your experimentation and resulting data are interesting, and perhaps compelling, but not necessarily conclusive. I'm not 100% convinced that the cold-bore velocity shift is 'caused' by 'moisture', because moisture was not measured. If moisture causes a decrease in velocity, then the removal of moisture in a warm (hydrated) bore should cause an increase in velocity similar to the cold-bore shot. This was not tested. Since there are several potential contributors to the observed shift in velocity, then a "Design Of Experiments" (DOE) is needed to isolate the predominate cause and characterize the resulting effect. Is it possible that the bullet lubrication is affected by temperature in a way that we do not understand? What about chamber temperature affecting case expansion/sealing? I'm looking forward to learning, along with you and your other devoted channel-watchers as you pursue this gremlin of accuracy. Thanks for all you do for our community.

[@PursuitofAccuracy]

Yeah unfortunately the variables are nearly endless. Ive tested this off camera for months between temp of barrel and other factors. The moisture theory seems to be the most consistent in results and predictability

[@PursuitofAccuracy]

But i agree more testing is required and nothing was proven in this video. Its all a theory at this point but a compelling one. We may never truly understand the reasons why but at least we have some interesting solutions in the mean time. Appreciate you watching and commenting

[@lz3572]

Some food for thought.!🤔 After the straw and or the finger cot was there a point of impact shift like the cold bore? If not you could be on too something.

[@cliffmcmann3058]

Way cool, Josh. Another great video. I wonder if you could just exhale on the first round or potentially use a damp rag on the projectile?

[@PursuitofAccuracy]

I think it needs it throughout the barrel but worth testing

[@raymondhall7192]

I really enjoy your videos. I have learned a lot. Thanks

[@heathharry8424]

thanks Josh, again great informative video, thank's for sharing the insight to cold bore, i've often wondered what makes this issue...my Ruger American in 22lr suffers from cold bore, second and subsequent shots are all clover leaf groupings on POA...quite annoying in hunting situations, i just make sure a fouling round is fired first soon before going hunting, where POI is so so important...

[@JeffP-z6y]

That’s exactly what I was thinking.. that the more oily type lubes are thinner and when cooled off won’t be as think in turn causing less back pressure 🤷🏻‍♂️ I’m excited to see the test results but it definitely makes sense that eley an others with thicker wax type when cooled will be thicker. Thanks for the info great content as always!!

[@jimjones8335]

Very interesting! Always learn something from your videos. I wonder if a can of air duster would do the same? Although, it wouldn’t look as cool as the straw.. lol

[@PursuitofAccuracy]

I was breathing in it to add moisture so canned air would be a different result i assume

[@TheTraveler807]

That would be a good test also. If the canned air didn't work, then it reinforces the moisture theory.

[@dnags403]

Great video! I’ve seen the same thing when testing SK and Eley. About 30-40 fps cold bore. You can hear it down the line at a match too if you’re paying attention to other shooters. I’ve been noticing this for a while now. I’m going to try out these tips 👍🏻

[@hardcorefishermen]

it's theory but worth testing, this makes me wonder if lubed ammunition has less cold poi shift when compared to raw lead bullets, if you blow breathe down the chamber with a straw it should make a difference in velocity, i will test with a chronograph the difference between dry patch pass and breath fogging

[@NoPro1962]

Very interesting Thanks for sharing! So cold bore first shot give er a blow 30 rounds walk down then back at bench .Does it need another blow say 10 min.between.

[@audieladd2476]

I'm so glad you posted this video because I've been peeing in my barrels for years and getting some really strange looks. If you think that blowing through a straw works, you should try peeing. More moisture, better results.👌

[@jeremysmith3786]

Marginal gains moves us forward, excellent video. Maybe just use a 2nd chamber empty flag in the muzzle instead of the rubber glove, easy to see its there.

[@stevenclark7070]

In my cz457, just the time it took to reload a 10rd magazine would be long enough for the cold bore shift. The idea that it is moisture related was brilliant. I replaced the factory barrel with a Lilja barrel. Mainly because I wasn't happy with the overall grouping I was getting. I will have to keep an eye out for the cold bore shift on the first round. Great video!

[@Redacted-Information]

Or maybe its just you?

[@stevenclark7070]

@@Redacted-Information That might have something to do with it. Between the shakes and blind in one eye, and can't see out of the other, could have some effect!

[@tw1st3dw1ll7]

Wonder if this is the same as first round pop with suppressors, where you have higher oxygen % in the barrel and suppressor, and that first round ignites it. But that is interesting and a simple fix.

[@thegriff9425]

How does this relate to a carbon ring, if at all? Great vid.

[@psycowilley3498]

Use electrical tape. A lot of hunters use black electrical tape over the muzzle to keep rain out of the barrel. When shooting, the gasses that escape around the bullet, blow the tape off before the bullet exits, so the bullet doesn't hit the tap when fired.

[@PursuitofAccuracy]

Yeah good idea

[@garylozowski1419]

My CZ457 MTR definitely has cold bore…. About 2” high and little left at 100yds. I will test with a longer piece of 1/4” vinyl tubing and report back.

[@garylozowski1419]

Exhaling into the barrel with a cold rifle (50 degrees) resulted in very accurate first shot, which is not typical for this rifle…..so it does work.

[@michaelspiering7585]

I wonder if that would work for my m96 , which is a 6.5x55 cartridge. It has a terrible cold bore shot, but after that it's just over .33 MOA. I'll have to try it. Thanks for the research.

[@HumbleDishwasher]

Love the video man, great work!

[@GrumpyOldManRC]

I usually just run a dry bore mop/swab down the bbl to clean things out. I do let the bbl cool some before the next group/chrono run. Works well for me but my firearms are nowhere near the league yours are in. Thanks for all your informative videos.

[@BillyBob-ft8ch]

Thanks man. Awesome video and I can prestage my squirrel gun before heading into the woods. Would that also eliminate first round pop from a suppressor?

[@PursuitofAccuracy]

Im not sure on the supressor

[@garylozowski1419]

Any idea why some 22 ammo has lubricant and larger bore centerfire ammo does not ? I believe most 22LR ammo produced in the US does not use a lubricant. UK and German brands seem to use lubricants.

[@fasteddie1360]

Back again, I watched Part 2 and saw you're doing the straw diff this time. Still curious if 'dry air' would make a diff, just removing 'low-oxy' fired gases as someone suggested in an earlier post. Just a thought. Gonna get some vinyl tubing and maybe try continuously breathing into the barrel, like when reloading mags. Will the addtl moisture make a diff ?? Gotta fire up the chony to see, but maybe after the weather breaks, so I won't break. -15* C this AM .

[@PursuitofAccuracy]

Ive ran a barrel cooler and the dry air caused the mv jump same as doing nothing but you could make it happen in like 30 seconds instead of 15 mins. Seems to speed up drying out the bore

[@Hammerback0]

had no idea. Pretty cool info, thanks

[@prone_wolf8871]

I shoot my rimfire expresslly at a hundred yards.....I dont see cold bore.....but could just be me.... I shoot @ 1/4 inch dots....if there is cold bore shift....its been so small i haven't noticed it...

[@josephpepicelli4859]

Josh… My friends call me Joe Pep. I’m a retired Police Special Operations for Swat and a Sniper for the PD. I retired a short time ago and I enjoy rimfire rifles along with long distance centerfire rifles. I purchased a Vudoo and now and then, I get a flier. I saw that Erik Cortina and other long range centerfire shooters tried a dime sized patch of Lock Ease liquid graphite through their centerfire rifles, after cleaning, to eliminate cold bore fliers. Would this work for rimfire rifles?

[@PursuitofAccuracy]

@@josephpepicelli4859 are you getting flyers on your first cold bore shot or just randomly in the groups?

[@josephpepicelli4859]

⁠@@PursuitofAccuracy I have a Vudoo.. cold bore sometimes and also randomly… Overall, a great shooter..

[@garylozowski1419]

If this small amount of water vapor can affect lubrication / speed of bullet, then I wonder how much the remaining smoke in the barrel could also change speed .

[@denisleblanc4506]

When using the finger cot method you waited 30 minutes. I think it would be useful to find out how long the finger cot method would still work to eliminate the cold bore shift. Is it an hour, three hours or even a day?

[@PursuitofAccuracy]

More testing coming in the future

[@takedeadaim8671]

Was circulating air through the bore tried? I’ve thought of a tiny cooling fan that blows down the barrel, just like a fan blowing on a wet or damp shop floor drys the surface. Not that what you have proven does not work. I know area clubs would never allow a “bore obstruction” to be placed over the muzzle, and they require that you step behind a red line and not touch your gun during cease fire periods.

[@paulsimmons5726]

Very informative and interesting video, thanks for sharing!

[@PursuitofAccuracy]

Thanks

[@georgegiroux4188]

That was pretty cool. Good info

[@jameslongrifle5837]

Does ambient air temp and or humidity have much of a bearing on the barrel moisture? If it's a rather humid day does this make the cold bore factor less or more pronounced?

[@PursuitofAccuracy]

I don't think that alone will help a ton for the first shot of the day but it will retain the moisture longer so it should extend the length of time between cold bore shots

[@bankspressley7624]

Excellent video

[@jerrylocklear3959]

Josh, honestly, I called BS when I heard the intro. BUT, I almost believe that this is true and your solutions may work. I'll be trying these fixes soon on multiple rifles with multiple types of ammo and will definitely report back.

[@PursuitofAccuracy]

Ive had several of my discord members test this with eley in their rifles and they got the same results as me. Some ammo lubes are better for mitigating it as well as barrel types, you will see that in your own testing

[@realtruth4259]

THINKIN ABOUT PICKING UP THE BERGARA HEAVY BARREL 22LR... WHAT CHASIS WORKS THE BEST SO DONT HAVE FEEDING ISSUES AND ALSO THE BEST TO WORK WITH THE B14 R SERIES RIFLES..... THNX

[@PursuitofAccuracy]

Whatever is in your budget and catches your eye. If the chassis doesnt have an adjustable mag catch you can just run the l3i mags

[@Robphoto37]

Interesting. I just ordered these wondering the same thing. It’s off topic but what material did you use for your gun room slat wall? It looks awesome

[@PursuitofAccuracy]

Its the hold up displays wall. Its aluminum panels

[@JeffreyMiller-q1t]

Didn’t look bad but you got to do what you need to do to make it work.

[@godzillaburger9690]

Who'd a thunk it? Great video.

[@dogbone1358]

No big mystery here. The bigger question is how does a cold bore affect accuracy? To me it has a negative effect and any rifle should be fired at least 5 times before shooting for accuracy. I guess the exception would be if you’re shooting in some kind of event that doesn’t allow warmup shots. In that case the moisture effect seems plausible.

[@DoubleTapMan]

wait, I'm lost here so you can plug the bore in order not to let moisture in and that helps but also you can blow the moisture in and that also helps? aren't those two contradictory? what is finally the reason of the higher velocity of the first shot?

[@PursuitofAccuracy]

Blocking it off to keep the moisture in the barrel

[@DoubleTapMan]

@@PursuitofAccuracy now that makes some sense. Thanks a lot

[@BenchrestMarksman]

Thanks Josh and super easy solution

[@stephenkrampert3430]

Hey, a friend of mine just turned me onto this video. I'm not a match shooter, but I wondered why I had impact shifts after taking a 15 or 20 minute break ; a water and a granola bar. what are your thoughts on parallax changes after a break? Light conditions or visual changes? I am very old.🤣

[@douglaskohls3163]

Blood sugar from the granola bar

[@strodd1968]

Wow, great video, thanks for info.👍

[@Philip223RD]

Great info. I'm going to test it with both of my CZ 457 with the ammo that they both like. Who makes the chamber flags you are using?

[@PursuitofAccuracy]

Hoz and shield

[@realtruth4259]

Curious how did the straw trick affect poi.

[@PursuitofAccuracy]

That rifle typically shoots .2 high and with the straw its same poi as the subsequent shots. In other rifles i have about half the mv jump and the poi isnt effected at 50, but at distance you can see them hit high of subsequent shots.