01-09-2020, 05:29 PM
A5BLASTER Wrote:So here is the average weight of hornady, Starline and PPU once fired brass.
Got the average by weighting 20 of each.
Note. All cases had been cleaned sized, trim, chamfered and deburred and have a live cci 450 primer in them.
PPU=124.8
Hornady=113.8
Starline=116.4
Looking at those I expect case volume to be less with the new PPU brass, might be interesting to check capacity of the cases with water.
Do I remember correctly the old PPU brass used large rifle primers? Seeing you are using CCI 450s with this brass that tells me the new cases use Small Rifle Primers. The more brass between the primer and the edge of the case should help the primer pocket grow at a slower pace.
Federal brass has been a soft formulation for years. I have loaded 7-39 waters for years and federal brass is good for about 3 loads with it while reformed Remington or Winchester brass is good for about 5 or six loadings after the initial fireforming shot.