6mm BR
- Thread starter Bugzlife19
- Start date
Yes I trimmed it to 1.550” per my reloading manual and that was obviously too short. Did I ruin this brass or can I just run it with less powder and eventually it will lengthen out again?
Nah nothing wrong with that. Typical 6br chambers are 1.570, 0.020" under is not a problem. I'd purchase a teslong bore cam if you don't have one, and inspect the throat area.
It’s only this set of reloads though. I just shot a match yesterday with virgin brass with the same load and had 0 problems.
I might have missed it but what die are you using? Could it be the brass has grown so much and the die is not sizing the body down enough which is causing the brass to swell up and not contract which could be causing the increase in pressure therefore increasing velocity?
Could there have been moisture in the chamber or some left over cleaning fluid causing a spike in pressure?
Could there have been moisture in the chamber or some left over cleaning fluid causing a spike in pressure?
It sounds like now would be a great time to to revisit all types of your brass and measure everything and record it. Case length, neck diameter both before and after , case diameter right at neck-body junction, case diameter at base above web reinforced area, comparative headspace, etc.
Oh, and do you anneal at all? Just curious.
I make the necks glow red and the annealing line is below the shoulder, what I found is that if you don't get it red when you bump the shoulder and size the neck there is spring back. I swear its more of an art than a science.
Berger 108EH jumped 55-60 thou and Varget... 30.0 grains look good considering I watched the reticle on shot #4 drop low left just as the shot broke. 28" Benchmark.
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