Alpha/Peterson Dasher brass and .272 neck
- Thread starter BoilerUP
- Start date
I bought some Alpha brass for my dasher and I'm not too fond of it. I got heavy extractor swipes on it with starting loads for the first two firings, after that I could go ahead and step on the gas like a dasher should. But when new, the primer pockets were super tight, and now after four loads, they are getting on the loose side. I don't think it will last like other good brass will.
Now I use Peterson brass in my 6BR and love it. My gun shoots better with it than with Lapua, and it holds up well.
Now I use Peterson brass in my 6BR and love it. My gun shoots better with it than with Lapua, and it holds up well.
I know quite a few PRS guys that tried them with a 272 neck and had issues. They went to a 274 neck and it seems to be working fine. Mostly Alpha as the Peterson is fairly new.
memphistransplant
Gold $$ Contributor
I use the Alpha in my .272 neck Dasher, and it shoots very well. Varget powder and both Berger 105's and Vapor Trail 103's. I did not turn the necks.
0.275 NK of you want to be trouble free with the Peterson/ Alpha OR neck turn.
I use this JGS reamer with .269 neck....absolutely no problems. See pics! New brass .266, fired .267, loaded with 105 Gugnir .2685
10 firings and this brass works great! After first firing I trimmed to same length. I do not neck turn or anneal. My load is 32.6 Var at 2960-2965!
10 firings and this brass works great! After first firing I trimmed to same length. I do not neck turn or anneal. My load is 32.6 Var at 2960-2965!
Attachments
HTSmith
Silver $$ Contributor
I'm guessing that is not Peterson brass.
No sir, its Alpha. For some reason its not letting me attach the pic of the reamer. The reamer print is 6 Dasher RD if anyone needs it. I gave them the specs and they built the reamer. I'm not familiar with Peterson brass. The Alpha has well for me. I've also shot Lapua 6Dasher.... I shoot Lapua in all other calibers. This my first shot at Alpha and its been good brass. The reamer is .145 FB.........hope this helps
So your loaded round is .2685" and your chamber is .269"? That's not much clearance, is it?
I expect after its cut that it comes out about .2695
I have several calibers that are no turn with around a thou to thou and a half. No problems after about 55 years of shooting.
WSMNUT
Gold $$ Contributor
I chambered my daughters 6BR with a .271 neck reamer and use Peterson brass in it with zero problems. Its an F-Class gun with no ejector so we dont worry about cases hitting the ground like guys/girls shooting PRS matches. We have not turned necks on any of her brass and the loaded round is .268 so we have an easy .003 clearance and expansion. She just turned 12 and shot enough matches this year to qualify for high master at mid range. Shes on her third firing of the brass so I cannot attest to the longevity of it yet but as of right now they are not showing any signs of failure. Very tight primer pockets, minimal case stretch, very good speed and very accurate.
RussellJ
Gold $$ Contributor
Just got done chambering a 6 dasher .272 no turn neck. When using the Peterson brass it will be necessary to turn the necks down to .013 for proper fit. I shot a 300/400 match this weekend and it shot extremely well.
27” Krieger 4g .236 1/7.5
Peterson Brass turned necks
105 Berger vld target
CCI 450 primer
32.3 varget
I worked up to this load for fire forming during a match so work up cautiously in your own rifle.
27” Krieger 4g .236 1/7.5
Peterson Brass turned necks
105 Berger vld target
CCI 450 primer
32.3 varget
I worked up to this load for fire forming during a match so work up cautiously in your own rifle.
I turned the necks on my Peterson Brass down to .0125. Shoots fantastic. Less powder charge to boot.
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