RUMLUVER
There isn't much experience in existence for the 338 cal.
I appreciate you data. The 250 @ 3000fps would extend my effective range out to 900 yds from the current 830. That would be a full 200 fps over what I'm shooting now.
If I could ever get into comeups/downs I could reach 1K but the the way I hunt is a bit of walk and stalk with very few opportunities to setup on a spot and stay there for a long period of time. Thus I stick with the mil dot and max effective range is limited by the 5th mil which is the top of the post.
I"m shooting the 338 win w/24" bbl with a Holland QD brake with the rifle loaded up to 10.8 lbs including scope, sling and bipod. Kicks about like a hefty 308 load but a bit more that 270 w/140s @ 3200. Kind of a gentle giant.
Its a hoot bustin rocks, so far out to 540 yds or so.
I'd run a RUM reamer in it but 24" is just too short to meet the needs of the RUM. Thus I'm looking for a factory takeoff barrel. I may run the throat out a bit tho' and see what that gets me.
Snooped around - Sparks' lilja bbl is on a rem 700, btw.