Has anyone used Peterson or alpha br brass. And how is it compared to Lapua not concerned about volume but neck thickness. They will be for a 22br barrel.
6br brass
- Thread starter Seanshooter
- Start date
All of the Peterson brass that I have tried (6BR .260 & .243) is @ .0015 thicker in the neck area than Lapua.
New box of Alpha 6BR brass: low of .0117, high of .0131, about .0014 variance in the dozen or so cases I checked a bit ago. I guess about .0125 average..... Nothing I have could ever tell the difference in that, but YMMV....... Old brown box averaged about .0130, so at least the Alpha seems a bit thinner than the brown box Lapua.
ETA: If you're interested, primer pockets were all .122 +/- .0005ish, and diameters were .171- to .172- with pin gauges.
ETA: If you're interested, primer pockets were all .122 +/- .0005ish, and diameters were .171- to .172- with pin gauges.
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freebird22/250
Silver $$ Contributor
I recently bought a 50 rd. box of Peterson's from Grafs & sons and i weighed 30 pcs. out of the 50, they weighed 132.0 grains, i can't wait to see how they last in my 6mm BR.
Better question, when is Lapua 6BR going to be back in stock.
So I'm going to show my ignorance here... can this Peterson 6br brass be ran in a no turn 6br chamber without issues?
rwj
Gold $$ Contributor
Measuring the wall thickness of several pieces from a just opened box yielded a range of .0124” - .0131”
Yes, I have used all 3 calibers in no-turn neck chambers with no issues.
Of course this is my experience in my rifles:
Peterson is at least as good as Lapua. That said I don’t care if Lapua ever comes back or not.
The only "con" I saw with Peterson brass is in the 6BR case the case fill was a little less than Lapua. However, in the 260AI I have been able to maintain the same case fill as with Lapua. The jury is still out on the .243AI as I have not done a comparison yet.
I just finished turning 100 pieces of Alpha 6br brass. Before turning, I sampled them for neck thickness. They ran from .012 to .013. I had a few that were just a needles width over .013. I turned them down to .009 for my .266 necked 6br. I did also check 3 or 4 for overall length. Big variations here, 1.552 to 1.557. I plan to trim them to 1.552 after sizing them. I'll do a final trim to 1.550 after a few firings. Overall they seem OK.
No way to really know until I fire them.
I have 100 pcs of Peterson 6br brass on the way from Grafs.
PopCharlie
No way to really know until I fire them.
I have 100 pcs of Peterson 6br brass on the way from Grafs.
PopCharlie
PopCharlie, why so much neck clearance on your 6PPC?
Frank
Frank
Looks like 6BR to me...
I have gold box Lapua, blue box Lapua, Peterson and Alpha. I lightly turn everything. With Peterson and Alpha OCD I no longer need to worry about Lapua and their schedule of reductions.
It's a 6br. My loaded rounds are .262 to .2625. Works good in my rifle.
PopCharlie
.243 + .009 + .009 = .261
.266 - .261 = .005
My loaded rounds are .262 to .2625???
Tolerance stacking?
If it shoots good, that's what counts the most!
Frank
.266 - .261 = .005
My loaded rounds are .262 to .2625???
Tolerance stacking?
If it shoots good, that's what counts the most!
Frank
I use a .259 bushing, then a .241 mandrel. The 95 gr Bib FB bullets I shoot have a .2436 to .2437 pressure ring.
PopCharlie
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That depends on what your "no turn" chamber dimension is?
Longtrain
Gold $$ Contributor
I just got 200 pieces of Peterson Dasher brass. My PT&G Blue Box no-turn neck is .2704”. The Peterson necks ran from .0125 to .0133 on select pieces. Loaded dummy round ran .269, if your no-turn numbers match mine, you’ll only have .0014 total neck clearance. A bit tight. Turned mine to .012, no issue now.
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