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Tinkerers!! good one!
How about this tinkering?
The .30-378 Weatherby Magnum is a new chambering as factory rifles go but it has been around for over three decades. During the 1960s, the U.S. Military contracted Roy Weatherby to see how fast a bullet could be pushed from a shoulder-fired rifle.
Roy simply necked down his .378 Magnum case to .30 caliber, seated special 30-grain bullets made by Vernon Speer atop heavy charges of powder, and exceeded 5000 fps. Some time later other wildcatters used an experimental powder to exceed 6000 fps with the same cartridge.
If your on the fringes of 30 year old info or are you on the fringes of modern day? must be way over 6K by now!!
When you "tinkerers" go past 6000 FPS please post your load!!
link to whole story
Its only money and others have done it 30 frigin years ago, so whats the problem?? tinker away!!
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My fellow, you have jumped the gun (probably a lot). The 30/378 is one of my cases but it is by no means on the fringe. I am only testing the 265 grain wildcats in mine. What are you shooting in yours?
You speak as if you have experience with the 338 Lapua. I was using custom made 338 Snyper (338 Lapua) cases prior to factory cases with headstamps being available. Heck, I even sold over a thousand to the US State Department for their sniper evaluation and training teams as well as the Air Force Special Operations group for some testing they were conducting for hostage rescue operations. I acutally was disappointed when the factory 338 Lapua cases came out. We had been selling the custom made cases for $3.00 a piece up to the birth of the headstamped cases. Anyway, the factory cases don't hold a candle to the custom cases.
BTW, we have been playing with the 338 Lapua case and similar size cases for over 16 years in both 338 and 30 caliber.