Originally Posted by Mark R Dobrenski
JPro-how much R17 did you use to get those speeds out of a 20" tube?

Thx
Dober

(have a 308 in the making is why I ask)


We topped out at 50 or 51 grains, I can't recall which exactly and my notes are at home. That was with W-W brass and the 200 Sierra GKBT seated at 2.81". The load was worked up in my father's 20" SPS-T, wearing an old-style VLS handle and a 3.5-10x40 with dots. It is a handy rig. If working with a custom tube and chamber, I'd expect powder charges to top out at a few grains less.

[Linked Image]


Now with even more aplomb