My .375 Ruger is built on a JC Higgins(FN 98 Mauser) by Bill Leeper. Bill had a McGowan .375 blank in stock so that's what I went with. No regrets as the rifle is a fine shooter. Bill cut the barrel to 21" then profiled it to a .70" muzzle diameter.
I had the bolt handle replaced with a straight, Talley-style for looks and to save wear and tear on my knuckles during recoil. I also went with a Talley barrel band.
Bill worked his magic on the action and I can safely say that I have never had a rifle that functions so reliably or smoothly as this one. Capacity is 3+1. I specifically asked Bill to modify the extractor so that it would snap over the rim of a directly fed cartridge.
Other improvements include a Timney trigger at about 3lbs pull, flaring the cocking piece groove in the rear tang and tightening up the stock safety lever.
I modified the original stock by adding two internal cross-bolts and lengthening the pull by the use of an ebony spacer. I added a 1" Pachmayr Decellerator pad and reshaped the stock. I don't really care for this stock. It's drop at heel is too much for a hardish recoiling rifle. I plan on replacing the stock with a nice piece of English, hopefully by hunting season.
The rifle carries a Leupold VX II 2-7 scope with low Talley steel bases/rings.
Weight all up is right on 9 lbs.
As for loading for this rifle, I experimented with a number of bullet/powder combinations.
I'm getting +/- 2800 fps with RL17 and Hornady 270 gr IL's and +/- 2860 with RL15 and Nosler 260 gr AB's. I will be testing some RL17 with the Accubonds soon.
I have no doubt that 2900-2950 fps is possible this 250 gr bullets.