77 Sierra TMK for AR platform

[dieselmudder]

Has anyone tried the new 77 Sierra Tipped Match King in an AR platform loaded to mag length. Ive had good accuracy results with 77 Noslers and RL 15. Thinking i will try load work up with that, and 8208 XBR if i can find any. It will be a couple weeks before i get the projo's in hand, but looking for guidance in adance.

 

[Park ranger]

I have today. Only 50 rounds. 300 yards. Krieger 7.7.

Pretty much same as the hpbt. Yes it seats deeper into the case, but I think the bearing surface is less. I'm actually a little slower than average with same powder charge. Really nothing special to report one way or other. Load and shoot.

 

[dieselmudder]

My results, from 100-400 yards. The Nosler shoots flatter, about 4 inch less drop at 400 yards, but the TMK is less affected by wind. couple inches less drift at 400. nearly identical MV