The 300 Rum brass is easy to find. Price: $3900 Description: Simply put, the 30-378 Weatherby Magnum is the “Mac Daddy” caliber. It has plenty of world records at 1,000 yards. Thread starter Bowkill02; Start date Aug 27, 2019; Bowkill02. Aug 27, 2019 #1 I'm looking for some good safe starting loads loads shooting a 180 nosler balltip and H-1000. 30-378 weatherby. But, that is still 520 less foot pound than the .378 Weatherby using a 300 grain bullet. It was an original belted magnum design with no parent case, inspired by the .416 Rigby and headspacing of the belted .375 H&H Magnum. from a 9 lb rifle. I know the 30-378 was developed for the US Army in the 50s. of energy and a bullet velocity well over 1800 feet per second at 1000 yards, with minimal recoil. Weatherby Mark V Accumark Bolt Action Rifle -The name says it all. And, with a 270 grain bullet the .378 Weatherby generates as … I shot deer and elk out to 500 Yds with it. I put on a longer/heavier barrel and removed the break. Overall nice condition. Both of these cases are high quality, and the cost of firing these big rifles means that any cost savings on … The .378 Weatherby Magnum was designed by Roy Weatherby in 1953. The 215 magnum rifle primer was developed by Federal specifically for this round. They are both supper accurate. The speed you'll see from a 378 case at 30 inches may be enough to compensate for the lack of twist. Used 180 barnesX. Designed to replace the 375 Weatherby Magnum, deep penetration and bone smashing power are the calling cards of the 378. This rifle will easily deliver over 1200 foot lbs. Minor surface scratches from use. Re: Anyone shoot a 30 378 Weatherby Magnum? Roy Weatherby’s 378 delivers 34 percent more energy at the muzzle than the powerful 375 H&H Magnum. But, one may point out that with a smaller 400 grain DBX bullet the .416 Rigby generates 5179 foot pounds of muzzle energy. Yes, the .378 Weatherby will generate considerable free recoil, an average of 77 ft. lbs. I would thank the .30-378 Weatherby or 300 Rum. Scope, base … Despite its unusual nomenclature, the .378 uses standard .375" bullets. I used to own a 30-378 in MarkV. The factory ballistics for the .378 Weatherby are impressive, to … Any help would be great. More available than the .30-378 anyway. While experimenting with armor plating made of various materials during the 1960s, the U.S. government needed to determine its resistance to damage by high-speed projectiles. If they don't work, i can tell you the 230s will work fine in a 10 twist barrel. I used it for hunting and unless just taking long range shots the break requires ear protection. I sold it before the triple x loads were available. $1,450 - Weatherby Mark V Deluxe .378 Mag, blued, nicely figured walnut stock, serial number H215xxx indicates 1991 build date. The .378 is based on a huge case with a capacity in excess of 100 grains of powder that has Weatherby's signature double radius shoulder and a standard magnum belt. you get around 200 FPS more out of the 30-378 than a 300 RUM. Weatherby's .30-378 is the .378 Weatherby Magnum necked down to .30 caliber and can drive a 180-grain bullet in excess of 3,400 fps. This compares to 20 ft.lbs from a rifle chambered for .30-06 Springfield, but is only 10% more than the recoil of the .375 H&H Magnum while having 22% more energy. Perhaps at worst you'll lose a little bc. I've been asked by a close friend to help him find a load for his new rifle and these are the components he has given me to work with. Scratches in blue underneath barrel at very end. A composite Mark V rifle that's loaded with accuracy-enhancing features. 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