The 6.5-300 or 6.5-338 RCM is on my list of things to do... as soon as I dump the cash for the reamer and dies, Ruger will come out with the other as a factory offering, so you guys should all be good to go... LOL.

The RCM, WSM, or RSAUM mag box for the M77 can go four down when stuffed with RCM cases, with a little massaging of the follower.

As far as case capacity, Hornady claims 68 grains for the 338 and 72 for the 300...


Last edited by MattMan; 01/07/10.
"Your range of experience runs that gamut from A to B, plus you're a nitwit. That's a hard combination to overcome, though some people try." - JB