Can .264 Winchester Magnum brass be made out of 7mm Remington Magnum brass. If it can, do you just run the 7mm stuff into a .264 Winchester Magnum die? Or, what is the process. A buddy has two pre 64s both in .264 Winchester Magnum and he wants to load down, say a 140 grain slug going 2700 feet per second or so. I tried looking at all the reloading shops online that I know of and not a one has any brass left. So, again the question, can you take 7mm Remington Mag brass and size it down to .264 Winchester Magnum brass. Thanks ... Tom Purdom
