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Old June 5, 2014, 12:46 AM   #15
HiBC
Senior Member
 
Join Date: November 13, 2006
Posts: 8,270
some suggestions:

If this load is max or near max,did they specify military or LC brass?
It typically is thicker,therefore less case volume,which requires a reduction in charge.


If you are crimping on a 168 gr matchking..not the best plan.It has no crimp groove.No place for the crimp to go.The load the die applies to the cartridge goes up,trying to crimp into the solid bullet.The shoulder collapses just a bit.The cartridge case gets a little larger at the shoulder.Measure over the shoulder for dia,then measure the case 1/8 in or so behind the shoulder.If it is larger at the shoulder,one problem identified.

It might be worthwile to put marker on the ogive of a bullet to see it you are contacting the rifling.You may be seating the bullet deeper closing the bolt.

I suggest against using this bolt gun ammo in the DPMS or the M1A.
You will need to be careful with the head clearance on the semi-autos,they need a little more,Like .004 to .006 in.

The WW primer is a little more sensitive to slam fire.
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