22CM with 77gr Tmk

[kkp005]

I was recently gifted a horizon 22cm… (I know I’m a lucky guy…)

I’ve already got an 8twist 22-250 tikka that shoots 77gr tmk’s really well over h4350 and h380.

What’s everyone using for powder in 22cm to launch 77gr tmk’s?? Got Hornady brass and dies headed my way.

Have plenty of h4350, varget, n565 and Staball HD.

 

[Bluumoon]

I really wanted Grand powder to work (cheap), speed was there, but groups sucked. H4350 has been gtg