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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
bore wear on Weatherby 338/378
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 510615" data-attributes="member: 505"><p>Eaglesnester,The 338-378 Weatherby is not a barrel burner under any circumstances. I have seen this thrown around on forums the past few years and it is pure BS by inexperienced shooters trying to find excuses to make there little darling rifle look better for some reason. I have been shooting the 338-378 wby since about 1979 and own seven now. Have some with 1500 rounds that are still in excellent condition. The 338-378 Wby is not even in the discussion as a barrel burner.</p><p> </p><p>Secondly, I would be concerned underloading your rifle to the 2600's fps. You are about 400 fps slower than my 338-378's. For example my 340 wby shoots the 300 SMK at 2735 fps with best accuracy. That is with about 30 grains less powder than the 338-378 wby. Why shoot a 338-378 wby and underload it down to between a 338 winchester and a 340 wby? I just shot some new 225 grain Cutting Edge bullets in one of mine out to 1000 yards at 3466 fps. Shot a 8 5/8" five shot group and the drops plugged into JBM came out .653 BC. The 338-378 Weatherby is a serious long range hunting rifle when loaded properly and is not considered a barrel burner by people who have extensive experience with them and other big 338's.</p><p> </p><p>Since you can't get H-870 any more try Retumbo with a fed 215 match primer. You should get a good accurate load between 108-112 grains that will get good velocity. Look at the slowest powders you can get and your best loads will be with powders slower than Retumbo. I still have a little H-870 remaining, 30 pounds or so, so I haven't really gone out looking for the best to replace it. I have a good friend I built one for and he is doing very well with Retumbo and I tried it so that is why I mentioned it. What load are you shooting?</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 510615, member: 505"] Eaglesnester,The 338-378 Weatherby is not a barrel burner under any circumstances. I have seen this thrown around on forums the past few years and it is pure BS by inexperienced shooters trying to find excuses to make there little darling rifle look better for some reason. I have been shooting the 338-378 wby since about 1979 and own seven now. Have some with 1500 rounds that are still in excellent condition. The 338-378 Wby is not even in the discussion as a barrel burner. Secondly, I would be concerned underloading your rifle to the 2600's fps. You are about 400 fps slower than my 338-378's. For example my 340 wby shoots the 300 SMK at 2735 fps with best accuracy. That is with about 30 grains less powder than the 338-378 wby. Why shoot a 338-378 wby and underload it down to between a 338 winchester and a 340 wby? I just shot some new 225 grain Cutting Edge bullets in one of mine out to 1000 yards at 3466 fps. Shot a 8 5/8" five shot group and the drops plugged into JBM came out .653 BC. The 338-378 Weatherby is a serious long range hunting rifle when loaded properly and is not considered a barrel burner by people who have extensive experience with them and other big 338's. Since you can't get H-870 any more try Retumbo with a fed 215 match primer. You should get a good accurate load between 108-112 grains that will get good velocity. Look at the slowest powders you can get and your best loads will be with powders slower than Retumbo. I still have a little H-870 remaining, 30 pounds or so, so I haven't really gone out looking for the best to replace it. I have a good friend I built one for and he is doing very well with Retumbo and I tried it so that is why I mentioned it. What load are you shooting? [/QUOTE]
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bore wear on Weatherby 338/378
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