Thursday, November 03, 2005

I don't have a specific point...

... but I figured I'd ramble on a few things anyways just to keep it "fresh".

Firstly, a thought occurred to me as I was running some free .32acp through my S&W 432PD. Yes, I know it's chambered in .32Mag, but i figured out a long time ago that it will also hold and fire .32acp since it's so close to the same diameter and has a very slight rim.

Why are there no .32acp revolvers on the market? You've got the very small NAA Minis, chambered in up to .22WMR, but the next leap brings you to the J-frames. Even in "accepted revolver cartridges" you pretty much jump from .22WMR to .32Mag. .32acp is a perfectly acceptable light defense cartridge, otherwise millions of Seecamps, NAA Guardians, PPKs, keltec P32s and the like wouldn't be out there.

So who's up for making a little birds-head .32acp 5, 6, or 7 shot revolver with the proper cylinder length so it's just tiny?

What else can shrink a revolver, hrmm.... briefly a long time ago I thought of something that would reduce the size of the cylinder. What's that? Not making a cylinder, but having discrete chambers on links, like a tank tread. Not very feasible.

In other failed ideas, it occured to me that if you tilted a cartridge at an angle to the bore axis, you could create a shorter magazine than the OAL of the cartridge, at the expense of width. But then it occurred to me that the staggered cartridges had no real way of orienting themselves forward, or if they reorient in the mags that it would have to be at least OAL otherwise they wouldn't fit. So much for the easy to hold .30 carbine semiautos...

Something to research: How much pressure management capability does a steel cartridge add over a brass one?

3 Comments:

Blogger Tam said...

I'm not sure if steel's greater tensile strength isn't offset by the superior elasticity of brass. Is the stiffer material really stronger, at least in the context of shell casings?

How would one test for that? Hmmm...

Now I'll be up all night.

11:08 PM  
Blogger Marko said...

The problem with stell casings is their differing elasticity properties. Brass will flex under pressure and return to its original shape much better than steel or alloy casings. That's why some of the Titanium-cylindered revolvers don't like steel or alloy-cased ammo...the different flex rate of titanium in combination with non-brass cases often causes sticky (or stuck) casings.

8:10 AM  
Anonymous Anonymous said...

.25 acp is also semi-rimmed, will drive a 50 grain bullet to ~950 fps, and would just about fit into the existing mini-revolver platform (NAA, FA). That would be a performance increase over even .22 Magnum in the short barrel.

9:32 AM  

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