Rimfire,
Good question. So far I am OK for the suggested powders, but will be chasing down bullets, brass and hopefully some factory ammo. Interested in Hornady Amax since they usually shoot so well, nice looking 140 grain available. Will try any 6.5 bullet I can find, then decide on a final load. Have only shot this cartridge once, a while back near the Black Hills and the rifle was very accurate. Flat as a .300 mag and kicks less than a .308 Win.
Lots of paperwork to get in place before I worry about shooting it tho.
This just came on so have not decided on a scope - possibly a 3.5 - 10 MK 4 Leupy but might want a bit more magnification.