How to measure .22LR rim thickness- the easy way part 2

[@hrbricker]

I appreciate your work. Thank you.

[@inrangerimfire20two]

I appreciate that!

[@johnchilton5160]

Good info. I’ve watched a few of these videos, and they don’t explain what they are measuring, or weighing. Ali’s I’d like to say every gun, even guns by the same manufacturer, are all made with enough slip in them to make up for all the different rim thicknesses. So, the thicker rims should be more accurate, given everything else is the exact same, even though with bulk ammo it isn’t. Good video!

[@inrangerimfire20two]

Thanks a lot for your comment and feedback. The main thing is to realize and understand what you are ( or are not) measuring

[@geraldrosella6247]

Good video, P.S. I use an empty fired trimmed 223 case works fine.

[@inrangerimfire20two]

Hey, thanks for the comment. The fired case works well for sure

[@fjb4932]

In my experience, those who complain the most about .22 ammo being inaccurate are Exactly the same ones who treat their ammo as junk. IE: tossing it around, shaking it, dropping it ( preferably a multitude of times ), more shaking ( as If to prove a point ), shaking the box of ammo, twirling the box between shakings, a few more dropping the box and a final rattle or two. Many yrs ago i listened when a younger fellow told me about having a box of .22 LR in his motorcycle pack. Rode a Trail bike and after about 6 months was shooting the ammo. Noticed about 40% of the rounds didn't fire. He attributed it to the priming compound being shaken away from the rim. Advised to shake the .22 rounds as little as possible, treat them gingerly. Advice i took to heart, to this day. Treat All rounds w/ respect and gently. Side note: I'll make someone a handful of downloads, say a 30-06 100grain @ 1,000fps. As soon as i mention a lite load people invariably grab a cartridge, hold it up to their ear... and shake it vigorously ( no, i'm not sure what they're trying to ascertain... grains of powder ? ) for several seconds. Strange behavior. Reminds me of a kid getting a new puppy in a wrapped box an shacking the sh|t outta it to determine what it is. Counterproductive . . . ☆

[@kelvynbettridge]

Weighing the brass afterwards makes a good point but the results from your weight groups matter… else compare the extremes of the weighted ammo on target to highlight

[@inrangerimfire20two]

Yep, it’s all about ones opinion considering the facts of the variables. Thanks alot for adding your opinion and perspective.

[@o5245607]

Thank you for a great video. What you are saying is the headspace distance and it would be interesting to sort from the largest group and then shoot several thinner rims and see if they are in deed the flyers.

[@inrangerimfire20two]

Hey there, Correct. Also, some rifles prefer (or shoot best) within a certain rim thickness. This can be due to headspace, but also ignition due to a thinner rim. Lots of fun experimentation with rim thickness. Thanks a lot for the comment!

[@CHenry1951]

Yes, the rim thickness is another variable, and yes I also do that, will we ever eliminate all flyers......nope, not even in a $20 box, but they will be few and far between !! Here's another twist, how about chamber dimension VS bullet diameter ?? ........... Thanks for posting.

[@inrangerimfire20two]

Cheers! Chamber casting at the bench? Maybe we could start a trend….? Thanks for the interest, I appreciate it.

[@mlone7]

I wonder about overall length of the bullet? On a match chamber barrel the projectile actually gets pushed into the barrel lands and groove. I would think that would be important.

[@Judge_Dredd]

I didn't see the point of weighing rounds in the first place, since there's too many variables, all you can do is everything else to tighten your group, that means ammunition brand selection, rest height, body and feet position (bench), npa, breathing technique, standard repetitive procedure, and ultimately a barrel tuner to further improve the group. If you were loading your own brass, then case weight, powder selection, primer selection, grains, projectile selection and weight/dimensions, all these things could be measured, but rimfire no. Weighing and measuring is more applicable with pelets, along with pellet manufacturer, model, etc. Then your only change would be regulator precision. Most of us have to work out where the PSI Sweet Spot is for our particular rifle, usually a PSI bandwidth outside of which your group size increases.

[@markmata389]

What is the head space on the weapon? That is what matters with sorting. Needs to all match. I have set my CZ457 with Lija Match barrel for .042, this is the rim thickness, of the stuff I shoot.

[@merrillkornelsen4640]

If we are concerned about a .004" inch (.1 mm) rim thickness tolerance, I'm thinking I should be cleaning my gun more often. Not just the barrel, but the chamber and firing pin specifically.

[@bart_maliszewski]

Hi! Where we can find video with your results on target and connection with what is important to get tighter groups? Weight or rim size? Or both? :)

[@inrangerimfire20two]

Hi there, I mention it in each video that I was just explaining why weight sorting is kinda pointless and that rim sorting sorta isn’t in my experience, but for the viewer to experiment themselves and find their own results out. Nothing is more controversial to rimfire accuracy than weight/ rim sorting and some are upset if someone suggests otherwise! In my opinion rim will get you some improvements, weight sorting no. And my advice is to buy high quality ammo for the best results

[@bart_maliszewski]

@@inrangerimfire20two great! I have to thank you that you stop me from buying a scale. Better I will invest more in better ammo :)Cheers!

[@ron8566]

Very interesting. Are you concerned that you are removing lubricant from each round due to the extra handling of each round? Variances in the amount of lubricant could affect velocity, stability, etc. Please share your thoughts on this…

[@inrangerimfire20two]

Hey there, thank you for the intelligent question. I would not be overly concerned personally because (as I alluded to in the video) weight sorting is not effective in my opinion. However, I don’t think a hard lube (Eley, any American fodder) would be affected whatsoever and the concern would more be booger lubes on SK stuff.

[@beauboydave]

Try this. Clean your barrel and particularly your chamber, then get a selection of ammo, stand the gun on its butt, insert a round, if it falls out of the chamber, it probably won’t be very accurate. The ones that stay in under their own friction generally produce the best groups,that goes for the cheap stuff as well. if it fits in the chamber 21:52 Well it’ll shoot well generally.👍

[@w.stevejoynerskeet9313]

How does a .22-diameter bullet fit into a 1/8-inch (.125) tube?

[@inrangerimfire20two]

Hey there, it’s just the fitting info for the part and not the internal measurements

[@Buck762]

I literally bought the exact same brass fitting, part number and all, and my .22 ammo falls right through...they must have changed the internal dimensions.

[@inrangerimfire20two]

Well shoot, that’s lame! I would just bring a fired case in and find one that works

[@brianwood7882]

The size of the combustion has an effect on powder burn( i.e. velocity).

[@inrangerimfire20two]

The size? What exactly do you mean? The size would not really be something you would be able to measure (as the powder/primer are sealed i the case) so the “size” of a burn would not be something you could determine in a .22LR

[@brianwood7882]

I left out a word. Sorry. If one case weighs more than another that should mean there is more brass. External dimension will be roughly the same. That would mean an internally smaller combustion chamber. On small capacity cases that can lead to increases in velocity. Same holds true for cases weights that fall below th average. Resulting varying velocities.

[@brianwood7882]

You can measure the internal case capacity of the fired cases if your scale is sensitive enough. Start by weighing them like you showed. Separate into a couple of groups. To check capacity set an empty case on scale and zero it with case on scale. Use a syringe filled with distilled water to slowly fill case until water just barely forms a dome and note weight. See if there is a difference that correlates to empty weights. Lighter cases will probably will probably hold more water. The cases that have a larger internal volume will develope less pressure(velocity). I'm going to test some SK ammo tomorrow. I will save some empties and check them on my scale that measures to .02 of a grain.

[@brianwood7882]

Here is a little data. I want preface with the following. Its all speculative since I didn't pull any loaded ammo apart to weigh and reassemble. Using Quick Load with the 22 CCM(Cooper Centerfire Magnum) and 40 Nosler. 1.4 grn powder Weighed 10 empty SK . Picked heaviest, middle and lightest. 10.30 grn held 5.48 grn H2O 1161 fps@ 10781 psi 10.16- 5.44 H2O 1162 fps@ 10883 psi 10.14- 5.37 1165 fps@ 11067 psi Next I picked the smallest capacity case and and changed powder charge weights. 1.35 grn= 1135 fps@ 10325 psi 1.40 grn= 1165 fps@ 11067 1.45 grn= 1195 fps@ 11861 Looks like case capacity didn't have as much of an effect as I thought it might.

[@wadepolly1798]

You're not just weighing the brass. You're also weighing what ever powder residue is left in the brass. If there is an actual difference in the weight of the brass cases them the heavier cases would have to have less powder capacity, and create higher pressure and higher velocity.

[@inrangerimfire20two]

That is precisely my point yes

[@prone_wolf8871]

I've been down this road a few times......and every time I think it drove me crazy lol... In weight sorting several brick, I did find that it would ever so slightly reduce the group size....(with cheap bulk ammo). But it did NOT eliminate flyers....the reduction n group size was not enough to justify the time spent.... For the rim thickness testing I took weight sorted ammo made a case Guage with 223 brass and calipers. I didn't notice much difference...but I didn't test rim thickness extensively like I did weight sorting... I did get a "better" rifle so I might get a Hornady rim thickness Guage and retest with higher end ammo ..... But can confirm weight sorting is the path to insanity 😆

[@geradebowden3293]

I sort my bulk ammo by rim thickness not by weight.

[@inrangerimfire20two]

That’s the only reliable way to sort, too many variables in weight sorting

[@earlhetrick3950]

Or use a .223 empty shell with a MIC

[@inrangerimfire20two]

Good tip but I have found the .223 case removes some lube from some brands

[@kennethdoughty644]

The Jig Used is a 1/8" NPT ---- Correct?

[@ronchristle1125]

Waaay to Rambling, a 4 minute video at most, but informative. I almost gave up

[@inrangerimfire20two]

Hey thanks for the feedback!

[@inrangerimfire20two]

Ahhh pellet weighing! Now you are talking..

[@danray9744]

you really need a better scale like 0.001

[@inrangerimfire20two]

Totally! That would make all the difference for dem flyers… Thanks a lot for the comment and interest!