So I decided to try some Peterson 6.5c brass. Case prep included running the case through the Redding match neck die with a .288 bushing. Well, I should have taken more time...
My factory loaded Hornady ammo measures 2895 in the neck, so I use a .288 bushing with Hornady brass.
When I loaded the Peterson brass it measures .295 in the neck when loaded with the same 140 ELDM pill.
The Peterson brass is thicker than the Hornady . H is .013 and the P is .015 when I caliper the thickness of the case in the neck opening.
My question is... since I used the .288 bushing does the Peterson load have too much neck tension. .295-.288='s .007.
So
Shoot as is and use a different bushing next time...or dump the powder out of the Peterson brass and start over with a full length resized case?
My factory loaded Hornady ammo measures 2895 in the neck, so I use a .288 bushing with Hornady brass.
When I loaded the Peterson brass it measures .295 in the neck when loaded with the same 140 ELDM pill.
The Peterson brass is thicker than the Hornady . H is .013 and the P is .015 when I caliper the thickness of the case in the neck opening.
My question is... since I used the .288 bushing does the Peterson load have too much neck tension. .295-.288='s .007.
So
Shoot as is and use a different bushing next time...or dump the powder out of the Peterson brass and start over with a full length resized case?