I can tell you that annealing helps with forming 556 to 300BLK.
Notice the seating pressures of the annealed vs not annealed cases when you seat your projectiles.
Seat slowly and see if all the annealed cases have the same seating forces.
Do the same for the non annealed cases.
If you have a case with different seating force mark it as a flier and see if it is out of the group by a bit or by a lot.
Fun times ahead for sure.
I’ve converted quite a bit and never annealed. Trying to up my game though
I have never annealed my cases - they last at least 6-8 cycles and most of it is fairly plentiful -- but thats just me - lazy I guess
I tested 308 brass in Winchester, Federal, R-P and Lapua to failure. Full length resizing each time in a Lee die.
I did not anneal any of those cases.
All deaths were from case head separation.
No split necks.
I anneal for more consistent neck tension and accuracy improvement.
Winchester case died at 14 reloads.
This is the group I got at the 34th time fired at 106 Yards.
With the R-P Lapua and federal cases.
They were not trimmed since the 26th firing of these 3 cases.
R-P case went 54 times
Federal 42 and Lapua 44 times.
Varget measured into a 454 Casull case This gives me 42.1-42.5gr of powder.
165 Game king HPBT and cci 200 primers.
I loaded these on a 4 hole turret press at the shooting area.
I did not anneal any of those cases.
All deaths were from case head separation.
No split necks.
I anneal for more consistent neck tension and accuracy improvement.
Winchester case died at 14 reloads.
This is the group I got at the 34th time fired at 106 Yards.
With the R-P Lapua and federal cases.
They were not trimmed since the 26th firing of these 3 cases.
R-P case went 54 times
Federal 42 and Lapua 44 times.
Varget measured into a 454 Casull case This gives me 42.1-42.5gr of powder.
165 Game king HPBT and cci 200 primers.
I loaded these on a 4 hole turret press at the shooting area.
I prefer a tighter group.
That is 4 rounds aiming at the hole to the right in the paper.
LC 13 and LC15 cases and Lee perfect powder measure used to throw the load.
25.0-25.2 gr H4895 CCI 450 primers , 55 Vmax seated 2.254" No crimp. Heavy barrel Savage axis that I cut the barrel shorter on.
Notice the flier that opened up the hole. Note to self quit mixing different case years
It is a good hunting load no doubt.
That is 4 rounds aiming at the hole to the right in the paper.
LC 13 and LC15 cases and Lee perfect powder measure used to throw the load.
25.0-25.2 gr H4895 CCI 450 primers , 55 Vmax seated 2.254" No crimp. Heavy barrel Savage axis that I cut the barrel shorter on.
Notice the flier that opened up the hole. Note to self quit mixing different case years
It is a good hunting load no doubt.
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