Lapua/SK 22LR brass heel label

[Near miss]

Has anyone tried sorting exceptional brass?
This is what I am talking about:
Picture of SK Biathlons

As you can see 4 in the left have light labeling where 4 on right have heavy labeling.

Here is another photo, of Midas +. Just one brass is lightly labeled??

Is this some conspiracy to ruin my groups or perhaps something even more evil?

 

[nesikabay]

I save time I have Bigfoot sort my ammo by head stamps, Use to have area 51 do it but shipping cost to much. I put it on the porch and Bigfoot stops by. I do leave a snack out in exchange. He likes beer

 

[JoeB]

Worn tooling.

 

[hlee]

Sort a boxinto groups of ten, based on stamp depth/crispness/whatever. Shoot the groups. I'd be surprised if you see a measurable difference, but I've been wrong before. Post up the results.

 

[Count3]

I’m curious what the outcome is also. Please share if you’re able to run the test.

 

[Near miss]

I will be back with the results. Might take some time. I am rather immobile now and not all of us have bigfoot helping out.

 

[nesikabay]

I will be back with the results. Might take some time. I am rather immobile now and not all of us have bigfoot helping out.

Ok I don't do this for everyone. Send me your ammo. Ill test it after Bigfoot sorts it. Ill let you know how it works out. It will have to be soon I here he has a family reunion coming up

 

[nesikabay]

An update just heard from a buddy in south New mexico. I cant say where. He has some friends that can help you out

 

[Near miss]

But how do you know they are not one of those.. This thing goes way deep and we need to be careful. You are sure they are skilled enough and equipped well?

 

[nesikabay]

They didn't vote for Obama or Hillary. I was told they use nano technology to look inside to ammo. I wont know for a few days they still have my ammo

 

[nesikabay]

Your a good sport Near Miss

 

[nesikabay]

I wish you the best of luck in your research

 

[metal2meat]

You could try a 22 rimfire rim thickness gauge and see if the rim thickness is why there’s more/less stamp.

 

[Near miss]

You could try a 22 rimfire rim thickness gauge and see if the rim thickness is why there’s more/less stamp.

I have a friend who has one, seems like there is point in measuring it in these specimens. But since rim thickness correlates with hardly anything it would be just a 'nice to know'.

I have heard that the overall length of the cartridge can make or break a group..

Does not anyone else have these same brass heel shape problems?? I need more cameras...

 

[hlee]

I’ve never looked that close. Lapua centerX shoots at or below 0.5” at 50y from my Kidd 10/22, and has the least vertical dispersion at 200y. That is sufficient for me...

 

[buffalowinter]

Smallbore shooters have been doing this for decades.



22 RIMFIRE ACCURACY GAUGE

THE CUSTOM PRODUCTS 22 RIMFIRE ACCURACY GAUGE HAS PROVEN EXCEPTIONALLY USEFUL FOR SORTING ORDINARY QUALITY AMMUNITION INTO LOTS WHICH WILL SHOOT AS WELL AS OR BETTER THAN SOME MATCH AMMUNITION. THE GAUGE IS DESIGNED TO SORT 22 RIMFIRE AMMO INTO LOTS WHICH ARE ALIKE IN RIM THICKNESS AND THEREFORE ALIKE IN HEADSPACE. [/TD]

22lr Rim Thickness Gauge





G3 Rimfire Rim Thickness Tool and Base-to-Ogive Length Gauge
Gerry Gereg makes two precision tools that let rimfire shooters pre-sort their ammo for improved accuracy. The first tool, the G3 Rimfire Thickness Gauge, lets you sort rimfire ammo by rim thickness. This tool clamps to the jaws of your calipers and is very simple to use. Just slide a cartridge into the gauge and slide the jaws closed. With mid-grade rimfire ammo you’ll see variances of up to .006″ in rim thickness. High-end ammo, such as Eley Tenex, shows much tighter tolerances. With no moving parts (other than the thumb screw), this simple gauge is easy-to-use and very repeatable. It also has a convenient lanyard you can loop around your wrist. You can learn more about this tool in a full RifleMagazine.com review.

Gereg’s second tool is a very nicely-crafted gauge that measures rimfire rounds from base of rim to the bullet ogive. The G3 MK II Pro tool fits comfortably in the hand while inserting a cartridge in the measuring chamber at the bottom of the tool. This G3 MK II Pro tool features a built-in dial indicator making read-outs quick and easy. Just slide a rimfire cartridge in the base of the unit and gently yet firmly push the round into the measuring chamber until the dial indicator comes to rest. The dial indicator on the gauge gives you a number which you can use to compare base to ogive lengths. Note: The piston is indexed to assure its return to the original setting. When we used the gauge with inexpensive ammo, we saw variances in rim base-to-ogive lengths of up to .025″. The high-end ammo, such as Eley Tenex, is much more consistent, with 80% of rounds falling within .008″ rim base-to-ogive length sprea



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