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

 

[david2duck]

42.5gr of Staball 6.5 and Peterson brass gets my dad an average of 3070 out of a 16” barrel with the 77tmk. We ran it much faster but this barrel doesn’t like the higher velocity/pressure.

 

[Lawnboi]

The 22 creedmoor thread

Iv gotten enough questions and have had enough questions about this cartridge that I think it needs it’s own thread. Too much clutter in the 223 thread. I’ll start with my build, and findings on what I’m hoping will be the ultimate deer gun. Hopefully others can add their experience as well...

rokslide.com

I have some data here for the 77