20X7.65 longue?
it was 308 diameter, but i bet these cases would be close-nuff with the right die set.
i don't know about a hand gun that runs at 50K-PSI.
but if they can do that to a pistol they could surely run the 9mm up there too, or even the 380 or even better,,,, hows about the 44 mag?
now your getting somewhere.
My 7.65 French's throat is about .3105", and it came with 70 original cartridges. I pulled down 3 of these when I got the pistol, and the bullets mic'ed @ .309"+. I chronographed a dozen of the mil-spec rounds, and they ran their 85 grain bullets at 1050-1075 FPS. Basically, a 32 Super Auto.
I run Lyman #313249 (84 grains) and the Lee 100 grain RN sized at .311" in this critter. It is NOT a blowback action--it is a Browning-esque toggle-link locked breech system, and its exterior appearance looks like a SIG P-210 that shrunk in the wash.
Federal, Remington, and Winchester have ad copy posted online claiming to have ammunition in queue to run these pistols. Given the utter lack of firearms, reloading components, and factory ammunition for almost two years, it is a curious time to roll out new pistols and cartridges. As others have alluded to above, perhaps a better idea might be to 1) load pre-existing calibers to their full potential and 2) actually put some of those products into the commercial sector for citizen end-users. Heresy--yes, I'll own it--but C'MON, MANG.
Fairly late in my career I handled a homicide in the Jurupa Valley area in which a large, nasty character was killed with some sort of 32 H&R Magnum revolver. Three of those rounds combined to lay low a 300#+ drug dealer who was remiss with his cash flow integrity. His killer was a somewhat smaller and nastier character who was known to carry "A 32", per an associate that was obliged to share that factoid. This same assailant had warrants outstanding for aggravated assaults (one each in L.A. and Orange Counties), and the issuing agencies had fired slugs from those victims for comparison. All were Hornady 32 caliber 85 grain XTPs (just like the ones I had hundreds of on my reloading bench); none of them expanded noticeably, and all could likely have been reloaded again and fired safely. The firearm was never located, but the projectile characteristics matched up, per Cal-DOJ/BFS. Don't pass "GO", don't collect $200. I never went to court on that case, though the bad guy was arrested within a week of the murder.
One of the slugs on my murder scene had fully penetrated this BIG DUDE through-and-through, and was caught coming out by his button-down shirt (This happens with some frequency). Is the 32 H&R Mag or the 30 Super Carry a viable self-defense round? It can be effective, as my and many other similar incidents have borne out over the years. Our belief was that the victim was fairly close to his assailant, though not close enough to have powder burns or stippling present--7 yards plus. 2 of the three rounds hit the Main Pump, which is what killed him. If you are carrying light tackle for exchanges of finality, cold precision is required for shot placement, either that Main Pump or the Brain Housing Group offering the best bang for your buck. There Are No Guarantees, even with a 40-45 caliber persuader--but no gunshot wound ever did any recipient any good at all, either. The 32s aren't something I would carry in harm's way, but any handgun is a compromise between projected power and portability, and the latter element is favored greatly in the CCW realm. "Killing" and "Stopping" overlap to some extent, but they differ between incidents greatly. A mid-caliber handgun beats the hell out of throwing rocks (usually). David made good use of a rock on Goliath, but again shot placement was key.