? 30-357 mag?

[AxeHandle]

No need to reinvent the wheel. For what you will put in one custom wildcat you can go to Gary Reeder and have a few. Gary does bottlenecks on the 357 max case. Of course he makes 445 and 405 based bottleneck wildcats too. He has worked with shoulder angles and such to make them work in revolvers. Even has off the shelf dies. Some are single shot (TC) only but the revolver friendly ones require the sacrifice of a long cylinder revolver.

[Lee Martin]

My .327 Meteor is similar to a 30-357, just longer and in 32 cal:





It'll push 85 grain XTPs to 2,200 fps from an 8.0" barrel.

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

[texashoosier]

If my calculations are correct, a .357 Magnum case trimmed to 1.26" and resized with a .300 ACC Blackout die will result in a .30/.357 case with a neck length the same as a 7.62x25mm....or darn close.

[jsh]

Bump the shoulder with the whisper/bo. And use a carbide die in 357 to fl to the web.
Have not checked on measurement but the old 7 super mag aka neckless wonder die could be used if shortend all it reall is is a 357 max case ran into a 7tcu die.
I have fooled with reforming a lot of cases. I do not know why someone has not fooled with the 7.62x54 for a wildcat. Nice and fat and Lapua makes brass along with a few others. The 303 Brit is another.
Run the 303 into a form a d trim die for a 7 or 30 br. It is a cute little devil for sure. But the large primer ......... I would think a standard large pistol would maybe do better than a rifle??
Jeff

[curmudgeon]

AS in the 22 Jet most older necked revolver cartridges, and a sharp body taper, which proved a bad performer on extraction. I had to have a 357 Bain & Davis, built it on a Highway Patrolman, Smith. Much to my sorrow anything approaching standard 357 ballistics proved nearly impossible to extract full cylinder, with out finding a nearby wooden fence post to aid in applying enough pressure to cyl extracting rod. Bent more than a few, but later found that carrying a leather-head mallet in my hip pocket and loading only three rounds it performed well, approaching 357 Auto Mag rounds at nearly the same pressures I might add. Later gave it up for the 357 AM without all the hassle. I don't know who was first to find out that by blowing the case out to nearly straight then the bottle neck made extraction problem go away.
The first to bring it to my attention was Gary Reeder. As he has done with his 224 GNR. and since some others.

[Lee Martin]

You're spot on Lee. Bottlenecks in revolvers benefit greatly from minimal taper, short necks, and sharp shoulders. I got the 357 Bain & Davis to work in a converted Blackhawk but that case design isn't ideal. By contrast the 30 Streaker, 327 Martin Meteor, and 450 Bonecrusher all sport the qualities listed above. Setback isn't a problem even at max pressure. Tight chambers and clean brass also helps (the latter is achieved by lightly wiping the shells with brake cleaner). Sounds like a hassle but it really isn't. And when you have 85 - 100 grain bullets going 2,000+ fps it's worth it. The noise and muzzle flash alone are worth the price of admission.

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

[groo]

Groo here
Some dudes are cutting their single shot 300blackout barrels for a rim.
Running 357 mag,360dw, or max brass in a 300 blackout die set and calling it a 300 blackoutR.

[texashoosier]

Jun 24, 2013 8:20:03 GMT -5 Lee Martin said:

You're spot on Lee. Bottlenecks in revolvers benefit greatly from minimal taper, short necks, and sharp shoulders. I got the 357 Bain & Davis to work in a converted Blackhawk but that case design isn't ideal. By contrast the 30 Streaker, 327 Martin Meteor, and 450 Bonecrusher all sport the qualities listed above. Setback isn't a problem even at max pressure. Tight chambers and clean brass also helps (the latter is achieved by lightly wiping the shells with brake cleaner). Sounds like a hassle but it really isn't. And when you have 85 - 100 grain bullets going 2,000+ fps it's worth it. The noise and muzzle flash alone are worth the price of admission.

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

So the .357-44 Bobcat (without the plastic adapter ring) has a better case profile than the B&D? And chambers cut to match could have zero extraction issues?

[jsh]

Man oh man are you guys hard on a fellow. Custom, semi custom , stock , do it yourself custom. I feel like a turn signal yes no yes no.
I have read over and scanned this place since I was pointed her on the 375 atomic thoughts I had. It is a fantastic place.
I know what I want and what I expect. I am willing to pay for it too. (However I don't know which way to turn on a case design and caliber) About the time I think I have it figured out bam something else clicks. Bigger is better. You can always load down but it is hard on everything to run right up against the wall all the time.
357-44 caliber is what I am thinking. But then I get to looking at some of the big thumpers.
I think my best bet is to just snag a 30 carbine and a 357 max. Then when I decided exactly what the devil I am going to do I am covered. However I am afraid if I find a max I will play with it and really like the dang thing. Maybe two are in line?
I will keep plugging along here and learning as I go.
You gents keep talking and I will listen and try to understand.
Jeff

[texashoosier]

Here's a different approach...
www.youtube.com/watch?v=rjTmXOjA5RU&feature=youtu.be

[magnumwheelman]

I converted a 30 Carbine Blackhawk to 45 Autorim, & 45 Colt ( I bored the 30 carbine cylinder to cut down on costs ) but I do have a 30 caliber 7.?" stock barrel I'd part with if anyone needed it ( was planning on taking it to the next gun show )

[cas]

Yes the 30/221 Rimmed (or 300 Whisper rimmed at the time) was common for a while some years back. There's little new under the sun, just new people who want it named after them.