"mere" 1700 fps, (at 50m) It's very easy to get a 90 gr Quik Shok 380 bullet to 1900 fps in a 5" 38 Casul, for instance. It's also simple to get a 5" 9mm to 2200 fps, if you just know enough to create and use a hollowbased, 50 gr bulllet.
Heck, I tried loading up super lightweight bullets in 9mm, but always had problems with those rounds working the action in the guns. The recoil impulse gets to be too narrow with the hyper velocity rounds, so guns designed to work with the more typical pressure curve of standard ammo will have trouble working reliably.
How did you address this problem with your project?
it with epoxy, and the slugs weighed 60 grs. Until got them over 1700 fps, they wouldn't reliably cycle the slide of a spld ultra compact. Too light, not enough friction in the bore. like 13 grs of Bullseye was used.
With bullets cast out of "non lead" solder (95% tin, 5% antimony) however, you can use the Lee size die ( in a reloading press) and Lee's liquid bullet lube, and size the bullets .002" over groove diameter. By hollowbasing them, you create a better seal in the bore, ability to "squeeze down" in the bore, and more powder room. If such alloy is used with a 155 gr Lee swc mold, you get a 100 gr cast bullet. Hollowpointing it reduces the wt by about 4 grs, and so does deepening the grease groove in the lathe, along with slitting the nose. Getting another 17 grs off, by hollowbasing the bullets, is tricky, but a 12 gr reduction is not.
Bullseye seems to be the powder, and the .060" longer case of the .460 Rowland lets you burn enough more powder to be noticably more effective.
Reminds me of my experimentation days. At one point I was melting the lead out of .44 mag bullets and trying to fill he jacket with pure sodium. I thought that would make an interesting effect if fired into a medium that is mostly water. :devil:
I just could not keep the bullet sealed as sodium oxidizes so damned rapidly. Even trying to keep it coated in oil just compounded the problems. Then I caught one on fire heating it to melt it into the jacket. Pretty nasty stuff, actually.
Of course, if anyone were to actually shoot a bad guy with a bullet like that, they would probably get thrown into prison for all eternity.
So I just scrapped the whole idea. I think making custom projectiles for self defense rounds is just a real bad idea from a legal perspective.
were ALL "one man" companies at their start, so such rounds can be "commercially available", ya know. All it takes is a $500 fed licence to get started. If you worry more about the legal aspects than about stopping an attack, you have things backwards.
Glad you think so highly of the M1 Carbine Melvin, I am looking forward to seeing the MV that I can get out of cast lead bullets in the spring when I chrono it. It will be good enough as a game gun, but could probably serve as a small game gun also for coyotes and such.