morcey2
Member
The primary reason we have so many is nostalgia. Hunters and shooters are a nostalgic bunch and too many hold onto old obsolete chamberings just because, even though newer and better are available.
While I agree with that somewhat, I don't think nostalgia is as big of a factor as you do. Nostalgia implies that someone is using something that is insufficient for the task at hand while better is available. If you're still hunting mule deer with a lever action 25-20, that's what I'd call nostalgia. I'm a big fan of the 57mm-length rounds from 6mm Rem to 8x57 that many have declared obsolete although they're far from it. Same with 6.5x55. Personally, I think that the 6mm Rem is quite a bit better than the 243 with a little more case capacity, longer neck, and it's loaded to higher pressure. It's also a very modern looking cartridge with a relatively sharp shoulder angle (26*, I think). Same with both 257 bob and 7x57. The shoulder angle is more "classic" at 20*, but the longer neck than many modern replacements.
The 7mm-08 and 7x57 are pretty much ballistically identical; same with 260 Rem and 6.5x55 swede. "But the 308-based ones will fit in a short action" is what I always hear. True, sorta. If you're loading long, relatively heavy bullets in either one, you have a couple of choices. Seat the bullet deep so it will function in the short action rifle or have the barrel throated deeper and treat the rifle as a single shot since the rounds won't fit in the mag. I don't view either of them as a true short-action round. Once you move past the short action to a long action, the older mauser-based chamberings make more sense, at least to me.
I don't think the chamberings are obsolete, but the max pressure ratings are. I'd love to see a 7x57 +P, 6.5x55 +P, and an 8x57 +P from SAAMI, but I'm not holding my breath. (maybe they could just steal the CIP data.)
Anyway, enough rambling. I'm happy to have any and all of them, at least at this point.
Matt