I’m trying to work up a load in my PA10 using 168 grain Hornady Amax bullets and IMR 4064 powder. I used the starting load for 308 Service Rifle from Hodgdens web site. I increased charge weights in 0.5 grain increments from 41.5 to 42.5 and saw some pretty big burrs on brass around the ejector hole. There were no other signs like flattened primers or cratering. My current plan is to use 40.5 grains as the top of the next batch and work down from there.
I’m puzzled by the charge weight causing problems as it is the same charge weight I use for my 175 grain SMK load. I’m concerned there were signs there I missed and now I have a box of ammo I’m not really thrilled about shooting again. Is it common for a powder charge to cause trouble when moving to a lighter bullet?
I’m puzzled by the charge weight causing problems as it is the same charge weight I use for my 175 grain SMK load. I’m concerned there were signs there I missed and now I have a box of ammo I’m not really thrilled about shooting again. Is it common for a powder charge to cause trouble when moving to a lighter bullet?