I am trying to finalize a load with 220 SMK. I am at 8.5gr right now and know they are subsonic. The groups aren't great. 8.7gr give much better groups but might be close to transonic. I am using a 16 in barrel from TP555 in an AR upper. Both loads cycle well and lock the bolt back. I have chrony on the way and will do more testing when I get it.
Columbia. My form 4 should be back soon (I hope). I am kinda waiting for it before I blow through a lot more ammo. I know the loads are stable and I won't get a baffle strike. This is my first attempt at reloading.
Columbia. My form 4 should be back soon (I hope). I am kinda waiting for it before I blow through a lot more ammo. I know the loads are stable and I won't get a baffle strike. This is my first attempt at reloading.