Quote Originally Posted by Triple G View Post
Never tried the TMK variant in my PSS.

However, I can confirm that the 77g SMK shot just fine even though it was a 1 in 9".

A friend couldn't get them to shoot in his rifle when but when chrono'd mine were doing about 150 fps more than his hand loads. So I would say it must be close to marginal.
The TMK is longer due to the tip so would be even more marginal, 69s may be a better bet, but if you can get a some 77s to try no harm in it. My 1:9 CZ came with load data for 75 gr a-max so they must shoot ok in it, the rifle also shoots 40 gr SBKs incredibly well!!