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I have absolutely no knowledge of what might be expected of this round, but it should be at least as fast as a 270 Weatherby Magnum. This case has a good deal more powder capacity than the 270 Weatherby Magnum and all things being equal, should generate more velocity. I worked a good deal with a 7mm X 300 Winchester Magnum and it was a good wildcat. It gave velocities quite a lot faster than either a 7mm Rem Mag or a 7mm Wby mag. When Roy Weatherby worked up the 270 Weatherby Magnum he did not have the powders to work with that we had today. That being the case, a large volume case just was of no value for a .277 cartridge at the time. So, he wound up shortening the 300 H&H case. I feel that the 270 Weatherby and the 7mm Weatherby are great cartridges and are sort of overlooked by the shooting public. But having said that, with todays powder choices, a larger case could produce some impressive velocities. You may have to reduce the neck diameter in couple of steps when you make cases, though. I imagine reducing it from 30 caliber to 270 might lead to a lot of case failures during forming. You might have to go down to 7mm as an in-between step. Good luck if you decide to try it. R F | |||
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<David> |
It may not be a problem necking down in 1 step. I have necked 8mm Mag to 7mm STW in 1 step without any problems. I have a 270 Wby on a customized M98 with a 26" barrel and 3450 to 3500 fps is no problem with 130gr Noslers using IMR7828. | ||
<Sniper> |
Thanks for the replies. I am still early in the contemplation stage, if I decide to do it I'll post more information about it. | ||
<Eric Leonard> |
Is that what you`re gonna get for getting LBG the Kimber? | ||
<Sniper> |
No, I am getting a Zeiss Conquest for that. I suppose you know me from www.tndeer.com what is your tndeer name? [ 08-11-2002, 06:19: Message edited by: Sniper ] | ||
one of us |
In the mid 50's and 60's they had the 7 Mashburn Super (300 H&H trimmed and necked to 7 then they went to the 300 Win down to 7) I've been shooting the 7 Mashburn Super for several years. It is a 2 step neck down and then a re-size b4 charging. I really love mine, sure the 270 Mashburn Super would be --- and yes it would be very close to the 270 Wby. "GET TO THE HILL" Dog | |||
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<Eric Leonard> |
mr.big | ||
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