Case Closed! Mossberg Patriot 308, Can it Shoot? (original stock and barrel)

[@patrickkroll7950]

THIS! This is what we wanted! Thank you for listening to the audience and revisiting this. Wonderful video and great to see the step by step diagnosis.

[@johnfuller5898]

Totally agree. This is what I was looking for and appreciate you taking the time listen and make the follow up video!

[@taxen1991]

B B B =Barrel Bullet Bedding 😊

[@Metalwolf765]

You said it man!

[@tompanek7511]

Finish with a new barrel . Confirm your theory. Right ?

[@glennhenderson9243]

​@tompanek7511 yes please.

[@louiscapasso4452]

Gavin, thanks for taking the time to go back and actually figure out what was the problem with this rifle. P.S. please send it back to Jim in stock form so we can see him tomahawk throw like he did the Christensen arms rifle the other day.

[@kevinli9331]

😂😂

[@Blair338RUM]

😮😂

[@RMM--uv7uk]

😂😂 that was so funny when he did that. Seen a few guys with the Christensen having issue this week

[@JamesJones-cx5pk]

I've glass bedded every rifle I have owned for 25 years.👍

[@Blue-cq2hl]

I think that this is far more interesting than just changing everything on it and seeing the entire journey of it. It's cool to see the full replacement custom and all but this is what really makes it interesting imo.

[@v71-v9n]

Definitely. Replacing the barrel was basically not even the same gun.

[@randallwhite9015]

This rifle is JUNK 4 INCHES AT 100 YDS IS WAY SHITTY. NEVER BUY ONE

[@backfire]

This was an AWESOME video. So frustrating to know what really is the root cause of factory guns sometimes. This was super thorough and really helpful. Well done, sir.

[@ettienebotha2883]

Guys. You never addressed the front action screw. The front action screw bottom on the thread of the barrel. Most othe guns uses the recoil lug to fix to stock. You barrely have 2 turn on the screw. Please review if it makes a difference

[@RMM--uv7uk]

Jim will you please do a follow up with us when you get it back. And hopefully you will contact Mossberg and see what they say.

[@leeturner3143]

Spin a budget friendly aftermarket barrel on that budget rifle and let's see what it can do.

[@randomidiot8142]

It would shoot like you would expect it to.

[@celmer6]

Then he could stamp "Solved" on the case and KZbin would erupt in adoration for the Mossberg Patriot budget build.

[@Dantestoussaint]

100 percent!

[@eltomas3634]

I think it would be more interesting to first, cut off a couple inches of the factory barrel making it around 20 inches and look at the results. A cut and crown job would be fairly simple and may just solve the issue.

[@LaineHarbaugh]

A budget $125 Shaw barrel would make a good video.

[@Off-target-xy6bx]

Thank you for revisiting this project. Most people buy budget friendly off the shelf stuff so it’s important to know what you can expect. We appreciate your time and work.

[@neilpowell113]

I purchased a new Winchester Model 70 Classic in 338 Win Mag with the exact same problem. I sent it back to the factory and they shot it and said my 3" groups were acceptable (I did a similar work up to what you did, and used carefully crafted handloads to try to maximize accuracy). A new barrel (375 Ruger) was all that was needed-purchased of course by me. (That was the last factory Winchester I ever bought) Usually a new barrel isn't considered a necessary accessory for a factory rifle.

[@davidjernigan8161]

This makes me think that Mossberg never changed the barrel when the rifle was sent back to Mossberg for the accuracy problem.

[@McgSpook]

likely every barrel they have is junk and it doesnt matter what barrel they use.

[@coyotehammer6947]

Probably Chinese steel. 😂

[@perrysutton9985]

Who would even want this POS?

[@mikecollins8241]

​@@McgSpook probably got a bad batch of 308's.. they are all about the same outside dimension, so not much meat on those vs 243, 223 etc 😮

[@nicksummerfield5408]

When Jim got the gun back the second time didn’t he receive a target proving it shot good? Wonder ammo they were using

[@rmbettac]

The look on your face showcases the frustration of this project. You exposed a harsh truth that will probably save people some money and headache. This follow up video was totally worth it.

[@usafret4709]

Would like to see a replacement barrel from Mossberg and see how it shoots.

[@dpwhitaker7088]

That would be nice!

[@wdtaut5650]

That would be interesting. I have seen other reports of poor results in the Patriot .308. Maybe Mossberg had a run of bad barrels just in that caliber. It would be good to see what a Mossberg replacement would do. Seems like Mossberg would be interested, also.

[@gunsnwater2668]

I doubt mossberg would care, they didn't care enough to check accuracy before it left the factory.

[@Gokywildcats11]

Thrn they wonder why sells have dropped

[@AdamLeePhoto]

Love the irony of that stock sticker in the video the whole time. Haha I don't think anyone doubted your original conclusion from the first video. It just lacked this video's process as part of the fault finding. Thank you for the follow up.

[@Und3adNation4L]

I’m surprised you didn’t take the barrel off and cut it back to 18-20” and recrown it. Shorter stiffer barrel and new crown. Outside of that it’s nice you came back and did some work and addressed the issue and found the real issue.

[@DG2244]

My thoughts exactly.

[@howellbranham9460]

Absolutely, also trim some of the back rethread and run a precision reamer.

[@dubltap7216]

I bought a Mossberg Night train in 300 win mag about 6-7 yrs ago.Never could get it to group and I tried about everything. Finally traded it in. Lesson learned.

[@brettr6895]

I had a patriot 308 many years ago and it shot 4" group at 50 yards. Never could get it to shoot well and got rid of it. I think the design of these rifles are fundamentally flawed.

[@Yelladog78]

I've had (3) Mossberg rifles, 223,308 & 270 all were terrible as far as accuracy. They won't get any more of my $ unless it's a 12 gauge pump

[@rokkinjohann]

Parallel to this problem was my brother's M96/38 Swedish Mauser. My handloads beat factory loads, but a second group was always worse than the first after each scrubbing of the bore. Paid a fee to get a bore scope video--pits n general decay end to end were revealed. He rebarreled it in the same 6.5 Swed, I bought him a Timney for his birthday and sponsored his choice for a Leupold VX III scope. My handloads developed for the old barrel print consecutive subMOA groups. Clearly, a bad barrel can mess up a good rifle.

[@DakotaDoc]

Thank you for going the extra effort to pinpoint the issue. We all appreciate it. I hope Mossburg is watching and will fix their (or their partner) issue. This kind of terrible accuracy is going to just wound big game, and drive away customers, often for a lifetime.

[@ikocher]

Thank you for putting in the effort to going back and testing different things.

[@tonycooper4031]

Much better. Now people with the gun have some idea of what their problem might be. These are the best videos for me, troubleshooting guns and what that takes.

[@nelssellars1283]

Thanks for following up. My 25-06 from mossberg has problems also but minor compared to this. Thanks.

[@rosswitte]

Thank you for listening to us and going back to investigate.

[@ericksturm7167]

Thank you for digging in and figuring out what was really wrong with the rifle. I have a Mossberg Patriot in 25-06 and it is a tack driver. Have a Savage Axis in 25-06 that has the exact same problem as Jim's 308, 4-6" groups with no rime or reason. Now I have an idea what the problem might be, thank you.

[@RogerMeinert]

Thank you Gavin. This was the video we wanted and now we all know. I appreciate you going back and re-addressing this rifle's accuracy issues.

[@biggs8729]

Thank you for being humble and breaking this down.

[@ssgttelrik]

Thanks for taking the time to go back and work on this rifle, Gavin. Really enjoyed getting to see you track down the gremlin of a barrel.

[@fordvg]

Great video and thanks for listening to us. I have to agree with you I honestly thought it was the action beding. Wow, about how the barrel shot. I’m surprised that it was not throwing rounds in the same direction with the second group throwing left to right and the last group throwing up and down.

[@andrewomalley2688]

Thank you! Thanks for going back and revisiting this, and finally getting us reasonbly definitively to the bottom of it. You probably know as much from the start, but thank you the walkthrough was worth the effort for us.

[@Dennisthemenace40]

Gavin, I want to thank you for revisiting this project. I was hanging on the edge of my seat, waiting to hear what the problem actually is. And I DON’T own one of those guns!! But knowing more about them will make me a wiser consumer. Thanks again👍👍

[@adadwithabluecollar]

Well, now we can hope that Mossberg addresses the issue in the first place. Had a .308 when they first came out, and now I know why it was so horrible! Thank you for the more in depth explanation.

[@jackbuendgen389]

Thank you for revisiting this project. Thank you for all the hard work you did. Turns out you get a bad barrel every once in a while

[@jamesmcallen3354]

Thank you for going back and investigating the factory rifle

[@shedbuiltmotorsport]

Great to see you revisit this and narrow it down to the barrel. First video came across as if you throw enough shit at a wall some of it’ll stick so didn’t really help explain the process.

[@arch2413]

As everyone else is saying, thanx so much for taking on this project and figuring out the issue! Most appreciated!

[@buckybadgerphd]

Love the thorough and analytical approach. Well done.

[@nathanhatcher7096]

This makes the 308 compass tc by Smith and Wesson you reviewed several years ago keep shining! I purchased compass in 308 just a few days after watching your video especially since it the only manufacturer that doesn't void warranty for using reloads! And enjoying less than sub 1" groups ever since!

[@Makeithappen8888]

Awesome job listening to your audience 👏

[@freespirit5481]

Thank you for redoing the test! Its sad that a well known company like Mossberg failed so badly when their shotguns are so well known to be good.

[@GetMeThere1]

VERY educational. Very useful. I've hankered after this type of video for years -- and I'm especially glad that it was you who did it.

[@kenmcvie6350]

Thanks for listening to us and revisiting this rifle. Now what i would like to see is another barrel fitted to it and see what it then produces.

[@TheSuburban15]

He did that already.

[@billj4859]

Glad you took the time to do this. Thank you.

[@stevegrant9683]

Thanks,just what we wanted to see. I good conclusion would be to rebarrel with a 308 and show the diffence. Thanks for all the effort, one of the most interesting series to date!

[@sapago4166]

I like the way Gavin runs his channel. Two thumbs up and I'm glad I subscribed.

[@johnpoc6594]

This is awesome, thank you for taking the time to re visit the original rifle

[@greasydot]

Thank you so much for taking the time to do this. Very interesting to think mossberg supposedly changed the barrel. What i find funny is the verticle you got in the chassis were the wood stock flung them everywhere. The 3 B's are very important in bench rest. Barrel, brass and bullets. Again thank you so much for the work.

[@richardwalker68]

Gavin, thank you! This was really valuable. I think you have still made a mistake... it's not a smoking gun. It's steaming, just like a fresh... you get the picture. Nice work.

[@Ultimatereloader]

Haha!

[@goooser410]

Yep... I had a Mossberg patriot 243, same thing the 6" groups. Went through a lot of ammo. I bedded and changed the stock to Boyd's. Ans still same. And then SOLD IT fast!

[@brettr6895]

Similar experience to yours. The rifles are turds.

[@bentaylor216]

Kudos to you Gavin for listening to your audience and revisiting this. Thank you.

[@ronthompson2366]

What we used to teach at CST. Run a bore plug through the barrel. This will show what you discovered. It's a common practice when building a competition rifle. Additionally, when factory rifles used to come with open sights induction brazed or high temp solder. It at times created a bad spot... dimension change. In the bore of the rifle. Meaning, replace the barrel. If you're flyers were some what consistent. The bedding job should have cured it. Next would be to use say a business card and work it along the barrel.. to pressure bed it. Often times and general rule of thumb. Light..or.. small contour barrels don't do well free floating. They "whip" to much. So full bed the barrel and action one to one. However, one of the first checks is a bore gage or bore plug. As you stated, this is an inexpensive rifle, not a lot of effort put into a proper polish of the chamber, contouring was factory cut.. not custom cut.. This would have been sent back to Mossberg under warranty. They would replace (hopefully) the barrel or the whole rifle under warranty. Sadly I have dealt with more expensive brands and "they" returned the firearm. Stating that they found nothing wrong... and were very slow in the process. Which then leads to a conversation with your customer. As to the course of action... and that's part of being a Gunsmith. The best part of this is now you know and you shared it with your viewers.

[@working_to_hunt]

Thank you!!! For going back and doing this right! This is what we wanted.

[@davyl3059]

Mossberg must have used one of their leftover shotgun barrels.

[@michaelnelson1911]

I loved your process. You are a genius, thanks for working through this. What a great video. I bet you’re Jim’s hero. Thanks for sharing.

[@9gomike]

Thanks for sharing. It would be interesting to: 1) Shorten the barrel to a point where the bore at the muzzle is not enlarged (measured with pin gauges), then re-crown. 2) Measure the chamber with a chamber cast, check neck and throat diameter and throat concentricity with the leade. 3) Re-cut the chamber with a tight tolerance reamer using precision concentric machining techniques. 4) Have the barrel air-gauged to look for tight/loose spots. Test after each change to isolate. Have heard that threading some barrels for muzzle accessories might cause them to ‘spring back’ or enlarge the bore diameter at the muzzle.

[@MrMagoo321]

Been following this saga from the get!! I seen a rifle with these issues and corrected them myself. Too much to type now but if you really want to know I can lay out the laundry list 😆 😆 😆 Thanks Gavin!!

[@glennwatson2751]

This is exactely what we expected from the first video. A proper examination of the rifle to identify the problem. You may have come to the same conclusion about replacing the barrel but you first video was just a new rifle without properly understanding the problem. Thanks for the new video

[@Bouldergoat]

Thank you for revisiting this

[@jamesmooney5348]

Wow Gavin! That was great! Excellent job! Glad you did this, thanks. You did good too Guy........ 😊

[@jonathanrogers9961]

Yes, thank you so much! Great to have a definite answer. I had one in 308, sold it. Always wondered if figuring out how to pillar bed it would help. This makes me feed a LOT better about selling it.

[@Mafiaal1]

Nice ... happy you followed up with this project.. Goes to show you, sometimes you get shooters sometimes you get duds.

[@stevewright3154]

Great video Gavin . I had a friend who put a small bulge in the end of his muzzle .22-250 caused by a small amount of oil left in from cleaning , it would not shoot at all , his gunsmith cut an inch or two off it , recrowned and threaded it and it was back to as good as new . That last bit of the barrel really can make or break accuracy, keep up the good work.

[@iancurrie8844]

Ah - I just commented on the original video before finding this one expressing my opinion that the rebuild missed the mark. I'm glad you made this one. I've got a 7mm'08 for my son and it's actually a sub-MOA gun so to be frank, the plastic bedding isn't an issue. Sorry to hear about the bad barrel but glad you got to the bottom of it.

[@countryboysteve]

I've told my story on my patriot in 300 win mag. That I ultimately ended up doing the same thing after multiple trips back to mossberg. It would shoot 2 shot within .75" third within 2" shots 4 + were as much as 6" off at 100yrds the action was also out of square by .003 . It's now a 7 rem.mag in a chassis that shoots amazing. 5 shoots within 1.5 @200yards

[@captainobvious1721]

Great job on listening to your audience. Great follow up video. I am always interested in the WHY rather than changing out a bunch of stuff and not knowing what the true fix was.

[@klkelly221]

Thank you for your time and effort on this project. This is what I was hoping to see, a breakdown of what to try to diagnose what the issues were. I am surprised with that result (since that was the 2nd barrel). I have never had a rifle shoot that badly.

[@brucegillespie654]

Wow you poured your heart into this one . I have had similar experiences, send it back and wait for ever until they decide to do something to make you happy. In my case after a year waiting for a solution. I decided to show them a video that I produced on there product that I would soon put up if they didn’t make it right . They paid me out for rifle after 15 months. I think I just had a lemon that over pressured with factory loads .

[@frankiecastro4036]

Yeah man. Thanks for going back to this. I had a new Winchester model 70 in 25-06 and just could not get it to shoot. Changed barrel and caliber to 7 saum and shot bugholes. Most accurate gun I have ever had.

[@ChanoLeyva-hq2ci]

Dumb calibers

[@heinzmisselhorn2587]

Thanks for the update!Awesome bedding job! For the sake of brand loyalty, nostalgia or sentimental reasons I am sure many Mossberg traditionalists would have like to see an initial, quick diagnosis by the expert - do the rebarrel video and give Jim his rifle back on another video enjoying the shooting conclusion on the range together with Jim. Preserving the authentic look of the Mosserberg the very reason it was bought in the first place!

[@freedomlover3834]

These type of videos from are gold. It’s nice to see you are human and make mistakes then show us how you fix them

[@homeinthewhiteoaks]

Thanks! This is what we wanted to see. Why the rifle will not shoot and is there anything that can be done to fix that issue.

[@alucas77353]

Thank you. Not many people, especially those doing this as a business would be willing to backtrack just for the satisfaction of the audience. I would be curious to know how lapping would help/hurt the accuracy, however if it’s already at .308-.3085” I imagine it’ll only get worse unless you find some oversized bullets to load. I’ve been sold on quality barrels now since I’ve started building with them a few years ago. Thank you again for your time and dedication to us all. You were absolutely right.

[@longridgearchery]

Bought a new Remington 700 7mm-08 a number of years ago. Right off the bat I put a Timney trigger and a Bell and Carlson stock on it. Shot horrible 4”plus groups at 100yds with multiple factory loads and hand loads. New 7mm-08 Shilen match grade barrel. Shoots better than I can now.

[@SEOKLADUCKIN]

GREAT.. That's what I wanted to see. Everything broke till it's fixed

[@Rucksack57]

Thank you for your efforts. I have always been able to get a rifle to shoot with bedding and loading. This lets me know there are limits.

[@Snailz5]

Excellent job. This is what I was hoping the first video would look like. Examine the rifle, then start replacing pieces and testing. It would have ultimately ended up the same way it did, but we would have known that at least the barrel was necessary.

[@masonmcneill3969]

I am so stoked to see this! Both videos were great but most of the time when I get a rifle it’s because I wanted that one and if it’s not shooting I want to fix that rifle not change it!

[@johnl5974]

I really enjoyed this video. I know you build very fine rifles. This video explained what was wrong with the stock rifle not just upgrading everything all at once.

[@nicksummerfield5408]

Thanks for digging into it that’s what we needed. My Remington model 700 in 300 win mag did this. After trying 6-10 different kind of bullets , 2 different scopes , different ring set ups , changed the stock to a bell and Carlson and I was still shooting 2-4 inch groups. Found Erik cortona and he was talking about barrel harmonics. I tried the limbsaver rubber thing and it helped some. Eventually I gave in and bought a tuner break and it finally shots groups under an inch after playing with the settings. Also had it to 2 different gunsmith and saw nothing wrong my barrel. If the tuner break didn’t work I was going to rebarrel it

[@cde1439]

Thanks Gavin finding the problem is what most of us wanted. Interesting comment about button rifles barrels! Thanks again, great chanel!

[@TheWVgoodguy22]

Excellent and thorough explanation of the process that you had to go through. Even though your original conclusion about a new barrel was correct I am glad that you revisited the problem child and showed us non gunsmith normal joes how you came to the conclusion of it being the barrel. Process of elimination. Now to spin on a sporter type custom barrel in whichever short action cartridge that Jim would want to use for hunting purposes and send it back to him 😃

[@lyndeen]

This was great! Fantastic to see your process and work to identify the culprit.

[@vicentewhite9881]

Thank you Gavin for the informative video, My son bought this rifle with the plastic stock in .270 Winchester he does not reload just wanted a decent hunting rifle, tested 4 factory loads and it grouped 3 to 4 inch groups. Got a friend of mine to pillar and glass bed with a Boyd's stock and put a muzzle break with those mods we are now shooting 1.5 to 2 inch groups with Federal Fusion 130 grain. I told my son unless you want to invest in a better rifle I think that's as good as this one gets. 😅

[@evilaudio]

as a gunsmith, I appreciate you taking the time to underscore the value we still provide to customers that care!

[@Ultimatereloader]

Thank you, and thank you for watching!

[@HowManyLegsItHas]

Thank you for this video Gavin. I'm surprised that Mossberg would send this back to Jim in this type of condition, glad we have found the fundamental issue.

[@jonathangagnon6261]

Greta video going back into it! It would be very interesting to see if a barrel tuner like the EC tuner brake or something would make a noticeable difference on group size.

[@luisparedes5591]

Very happy to see this vid. I think there a lot of interest to see the barrel replaced just to see how it does in the original stock. Maybe ina common caliber. 308 win or the 6.5 CM. Thanks Gavin !

[@Redhead393]

Great episode Love to see this done with all manufacturers in 308

[@daveknowles3055]

Glad you re-visited this project. Amazing how much the barrel was effecting group size. Good to have some resolution of what was wrong with the original rifle. Not sure I would have gone with 6 Dasher and such a heavy chassis but hey I'm not the one shooting it, as long as Jim is happy that's what counts.

[@bobvi5490]

Glad you took another crack at it and answered the nagging question of whether pillar bedding would help. Was certainly a valid question, albeit with an unexpected answer.

[@martymar1484]

Thank you so much.. this was what was needed. I had watched it on Backfire.It's so interesting to finally find out what the problem was. it's hard to believe that it is this day and age with the technology we have things like that happen still. Not say that a factory barrel is in the same league as custom barrel. But never would I had thought it could be that bad.

[@purplepenguin43]

Excellent job! What im hearing is the accuracy is stored in the barrel and the bullet. :)

[@gromann]

I did have an M1A that would only get 2 inches with its Goldilocks hand load, everything boxed was 3-5". Had a barrel and trigger job done to it and saw it brought down to under 2 with cheap boxed ammo and now under 1 with my hand loads. The trigger wasn't bad before so it's really a testament to the barrel work

[@farmer727]

Be interesting to see you cut an inch off it to see if the muzzle end is the problem. I would love to see you get deeper. Learning more is why we watch.

[@ryanglass3570]

Bought a Ruger m77 mark11 30-06 in 1999, had the same problem and groups were nearly that bad. Struggled with it for years, gave up and replaced the barrel with a shilen select and a boyd's stock now it shoots great.

[@stlllearning5800]

Very good video! I have one of these in 450BM. It doesn't like the sub-sonics rounds but it shoots same-hole groups at 100yds with Hornady FTX 250gr. Been very happy with it as my go-to for OH gun season. Conversely, I had a very lengthy effort with a Bergara b14 Timber in 308. MANY trips to the range and boxes of ammo (including higher-end loads incl. Hornady Precision Hunter) to finally land on Fed Fusion 150gr. An unexpectedly fickle unit.

[@Mmikejs72]

Thank you for this video!!! At the same time your original video came out, I too was having the same issues with a Howa 1500 in .308 win. I took it to my local gunsmith, and he noticed the barrel was tight at the muzzle. So, we cut it off about 3'4" at the muzzle. No change. I was wanting a Woox stock anyway, so the next step was to purchase the new Superleggera stock. Wow! That made the gun look good, but not shoot any better. I couldn't wait for this video any longer, so I recently ordered a prefit barrel from Preferred barrel. Still waiting for it to come in to see. I used them as they offered a barrel that I could put on myself (not being a gunsmith) using go and no go gauges. My local gunsmith removed the old barrel for me and lapped the bolt lugs. My new barrel won't be here until October, but I am very optimistic this will be the fix. Thanks for going back and looking into Jim's gun closer. It really helps all of us out here!! Great job!!

[@sprinklersolutions11]

BOOM! Great job with these videos on the Mossberg Patriot. Glad you went back to troubleshoot using the factory parts. Would have been interesting to see what would have been the results if you had rebarreled it. Anyway keep up the good work!

[@joncook6331]

Thank you for doing more research. It’s still odd that it had these issues. I have the exact same rifle in 300wm and it’s a tack driver.

[@dawwlo]

Now you're talking! Superb video❤

[@patrickschultz8820]

Gavin, thanks for putting in the time! I really want to see another barrel put on it and see the results. A steel Proof sporter barrel.

[@jamesmooney5348]

Yeah, your first rendition was just too Mavin, the Martian ray gun for me. Impressed with you Gavin, impressed

[@richardcooper6050]

Great video Gavin and thanks for diving down that rabbit hole. I have a similar experience with a Howa 1500 in 308. It will shoot 3 shots into 1in with most bullets I've tried. But after the 3rd shot all bets are off where 4 & 5 are going. After looking into it at some depth We've settles on the barrel being the issue here. It helped to know someone else with the same model Howa that was having the same issue. He had it rebarreled and accuracy was night and day.

[@JamesJones-cx5pk]

I did the same thing to my Marlin X7S in .308 with pillar bedding. The trigger guard is plastic. I glwss bedded the action and cut the rear screw plastic off. 👍

[@chrismuncey3861]

Good job on this series I wouldn't have really guessed the barrel myself. I went through basically the same process of elimination with my Savage 338 Lapua. Makes me more confident that may be the problem I'll find out when it gets the 300 Norma Barrel finished.