Master Blaster,
I am talking the 1970's. Back then Lake City still loaded the match ammo the military used. The AMU developing and loading its own ammo started later. I'm not sure exactly when.
No, I would not merely move a jacketed bullet into the throat without starting load workup over again. But it's a waste of time. The left group from my Goldcup was with Hornady 200 grain jacketed semi-wadcutters, and that wasn't touching the throat. The jacketed bullets seem to be able to self-align in the bore during firing and without distortion or shaving. Distortion is was screws up lead bullet accuracy.
Ozzieman,
No to case length. As I explained, the cases eventually become way too short. I took some Winchester brass through 50 reloading cycles, at which point three hundred of the original 1000 new bulk cases remained, the rest having split or been lost, and it was all 0.025" shorter by then. No way for it to headspace on a case mouth even in a tight chamber. You do have to adjust your taper crimp die down a bit for that.
ShootistPRS,
You'll need to produce a citation for that, as I and thousands of others have done it for decades.
As Libertarian David Bergland once commented, "Utopia is a place where everyone has everything they want and nothing ever goes wrong. Utopia is not one of the options." Many handguns, 1911's in particular, are put together with fairly rough fitting parts. It's very easy to get one that has more room in the chamber than the length of cases within spec can reach. These cartridges are stopped by the rim finding the extractor hook before they get there. I don't have a sense of how common this is in other pistols, but I've worked on a lot of 1911's and found this happening in at least half of them.
Go take a look at the old NRA technical information from the 50's and 60's. You'll find a lot of the top shooters of that era roll-crimped their ammo and swore that produced the best accuracy. (They didn't have taper crimp dies commonly back then, so light roll crimps were needed to remove case flare, but some experimented with taking it further. They were doing it for revolvers using half moon clips anyway.) It's the start pressure, again. There are photos of it in those old articles. The trick is that the extractor hook stopped the case from going forward far enough to jam that rolled crimp against the throat.
I am talking the 1970's. Back then Lake City still loaded the match ammo the military used. The AMU developing and loading its own ammo started later. I'm not sure exactly when.
No, I would not merely move a jacketed bullet into the throat without starting load workup over again. But it's a waste of time. The left group from my Goldcup was with Hornady 200 grain jacketed semi-wadcutters, and that wasn't touching the throat. The jacketed bullets seem to be able to self-align in the bore during firing and without distortion or shaving. Distortion is was screws up lead bullet accuracy.
Ozzieman,
No to case length. As I explained, the cases eventually become way too short. I took some Winchester brass through 50 reloading cycles, at which point three hundred of the original 1000 new bulk cases remained, the rest having split or been lost, and it was all 0.025" shorter by then. No way for it to headspace on a case mouth even in a tight chamber. You do have to adjust your taper crimp die down a bit for that.
ShootistPRS,
You'll need to produce a citation for that, as I and thousands of others have done it for decades.
As Libertarian David Bergland once commented, "Utopia is a place where everyone has everything they want and nothing ever goes wrong. Utopia is not one of the options." Many handguns, 1911's in particular, are put together with fairly rough fitting parts. It's very easy to get one that has more room in the chamber than the length of cases within spec can reach. These cartridges are stopped by the rim finding the extractor hook before they get there. I don't have a sense of how common this is in other pistols, but I've worked on a lot of 1911's and found this happening in at least half of them.
Go take a look at the old NRA technical information from the 50's and 60's. You'll find a lot of the top shooters of that era roll-crimped their ammo and swore that produced the best accuracy. (They didn't have taper crimp dies commonly back then, so light roll crimps were needed to remove case flare, but some experimented with taking it further. They were doing it for revolvers using half moon clips anyway.) It's the start pressure, again. There are photos of it in those old articles. The trick is that the extractor hook stopped the case from going forward far enough to jam that rolled crimp against the throat.