I got the chance to try some Black Hills 5.56mm New Factory TMK ammo in 69 grain and 77 grain bullet weights. We run a 77 gr SMK house load in .223 pressure/velocity, so I thought we'd use that as the baseline, and go from there.



I initially wondered why they would take the 69 gr to the 5.56mm loading, but after our first time running the ammo today, I think this load is going to be something very impressive.

The ammo comes in the same red/black box that Mk262 does with the nice plastic insert that protects the ammo. The box insert holds the ammo by the neck to protect the round and the bullet. Both of these loads come in LC brass with primer crimps and the visible annealing iris.