Odd but intriguing idea... 5.7 revolver?

I've never had a single issue out of my Taurus Tracker in .17 HMR, have never had to tap a single case out of a cylinder because the bottleneck expanded into it beyond being able to be removed with an easy push of the extractor.

That being said, I wouldn't buy a 5.7 revolver or any other 5.7x28 chambered gun simply because of the price and availability of ammunition.
 
I don't really know anything about the .22 Jet, but it almost sounds like it is the only bottleneck cartridge to have a problem? From the other posts, it seems the .17 HMR and the 224/32 did fine. Is it all bottlenecks or just the .22 Jet that had the issue?
 
I suspect a good part of the problem was the shape of the Jet case. It was not bottlenecked as we usually think of it, but had a long taper from about the mid point forward to the bullet diameter neck. I assume there was a reason for that shape, and probably lots of testing behind it, but I know there had been few problems with the K-Hornet chambering in modified K-22's, and always wondered why S&W didn't just use the same case shape in the Jet.

Jim
 
Is it possible to have an unconventionally shaped chamber in the cylinder? Say have the cylinder neck down where the first taper on the cartridge happens so that the narrowest part of the brass still sits almost flush with the chamber? From what i can tell, it's more a "shelf" than a taper on the 5.7.
 
so... now I have to ask... do you have another 5.7 gun, & you're hoping to get a revolver in the same cartridge, or do you just think it an interesting cartridge ???

reason I ask, is the brass is thin, the rim tiny ( I've pulled off my share, when I 1st started reloading it ) the case in stock form is lacquer coated, repeated reloading tumbling etc. is going to thin or strip the lacquer... in general, there are much better designed cartridges ( my understanding, is the lacquer is added to delay the blow back of the action on the 5.7 pistol... it's not needed for a revolver, or a Contender, or bolt action rifle for example ) the FN pistol blows the shoulder forward between 1/16 & 1/8 inch during firing & extraction, which makes reloading a major pain, & brass life extremely short... shooting it in a fixed breech gun solves alot of it's issues, but not all of them :)

if you're just interested in a similar but much easier to reload cartridge, with much thicker brass, & a bigger rim, look at the 221 Fireball
 
"It was not bottlenecked as we usually think of it, but had a long taper from about the mid point forward to the bullet diameter neck."

It was, in some ways, an exagerated .38-40 shape.

Only the .38-40 operated at significantly less pressure, and I think that's where most of the difference was.

A few people I know who had experience with the Jet said that you could get it to work a lot better by reducing the velocity a couple hundred feet per second, but at that point what was the purpose of the cartridge?

Really none.

S&W supposedly experimented with either a K or an N frame in .256 Winchester Magnum around the same time, but the .22 Jet experience soured them on bottlenecked cartridges.

The .256 probably would have worked better.
 
so... now I have to ask... do you have another 5.7 gun, & you're hoping to get a revolver in the same cartridge, or do you just think it an interesting cartridge ???
Click to expand...

Interesting cartridge. I saw the P90 and Five-Seven demo'd at my state's academy and was very impressed with its performance. It's a stout little round. Since then, I've known a couple of people to buy the Five-Seven and shoot racoon or even coyote with it. I think it is just a nice round. I can't help but feel like it would benefit more from a revolver platform.
 
I traded in my FN 5.7 after I bought a PMR-30... so the 5.7 cartridges I load for now, are for my Contender barrel, & in that platform, it's nothing to brag about... IMO, it's sole appeal in the real world, is as a high capacity semi auto round... & since the cases are all but throw away, I'm actually much happier with the PMR ( & I don't have to crawl around on the ground picking up thje brass ) I have a revolver in 22 Hornet, that I swapped on a 1 in 9" barrel, & the Hornet in that format does anything the 5.7 does... with half the complications reloading
 
I have a Bowen conversion of an OMBH to 25 WCF. Took some work to get loads that would not tie the gun up as has been mentioned. Fast powders did not work (231, Bullseye etc.), but H-110 and 4227 are working just fine. Typically shoot an 86 gr. cast bullet over 9.5 grs. H-110. Goes about 1400 fps from a 5.5" barrel. As I mostly a plinker, that is just fine.
 
Could you take advantage of the case design with a slight modification to this S&W ejector assembly, redesign it to keep the cartridge in place so it doesn't back out, until it is ejected correctly.

800px-Model5008.JPG


This image is from the following website and credited to Stefan “Säli”;
https://notionscapital.wordpress.com/2008/06/30/the-spin-on-dc-gun-laws/

I hope this is correctly posted.
 
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