Re: Custom Gun
Some smiths will open up Rem 700 bolts to fit the 338 Lapua case (or 378 WBY) while others warn against this practice. It's a bit iffy for me and I would much rather play it safe by using a larger diameter action which was built for this size case. Just my opinion though.
The 300 Tomohawk is basically the 300 RUM in an improved configuration, less body taper and a shoulder angle change, resulting in more case capacity. Similar to other "AI" cases.
Personally, I feel that the RUM case is already beyond the normal practical limit in case capacity for the .308 bore. Larger cases use considerably more powder for nominally smaller gains in velocity. You can probably burn the throat out of 30-378Wby barrel by the time you find a good load. [img]/ubbthreads/images/graemlins/grin.gif[/img]