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Handloader
- Dec 26, 2007
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OldMan":amalludt said:I chrono'd a 338/378 wby with 225 grain factory loads that went a touch over 3000 fps in a Mark V. My 340 went 3100 with 225's, maybe that's why it kicked so bad! Used 8mm Rem Mag brass just run through the die and trimmed, no pressure signs at all and great groups. Kicked so bad it was ruining my eyes. (detached retina) The guy I sold it to finally put a brake on it because it was smacking him between the eyes. The guy is a friend of mine and still has the gun. (He wouldn't sell it for any price!) For some reason the Ultra Mags I've shot don't kick as bad as the Wby's.????
The 338/378 is in a class of its own not only in ballistics and powder charges but in brutal recoil. The 340Wby's I have shot in the past with no muzzle brakes do not kick like 338/378 at all. The 338Rum will kick harder than a 340Wby just due to the extra powder charge much less the stock designs on non Weatherby rifles.