You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
M1 Carbine, Modified
- Thread starter Art Eatman
- Start date
Wouldn't a 338 be better? Bullets with good BC are widly available and you have a good variation of weights available.I've talked about wildcatting the x39 round and running a big bore AK. I was thinking a .40, but .35 would be OK.
9mm Para is .357, right? Why would it be difficult for a factory to fabricate that case to the same length as the Carbine?
Almost, Art. The 9mm spec is .355", not .357".
The 9mm case head is .394, vs. .360 for the M1. You'd have to test that .034" difference, but it shouldn't require too much tweaking.... I think. The critical factor would be making sure there's enough room to capture the case on the bolt head and still engage the locking lugs.Bolt face, barrel, R&D with gas port diameter and recoil spring and it's good to go, seems like.
A 9mm case extended about 1/2" to 1.290 (carbine length) would give you a lot of powder room to push a 125-135 grain projectile downrange with some authority.Mostly I figure that a bit heavier bullet might get better penetration on such game as smaller hogs and deer, while not hurting any present effectiveness for plinking and defense.
bamaranger
New member
modified M1
Didn't somebody go the other way with the M1 carbine and call it the .22 spitfire or similar?
Didn't somebody go the other way with the M1 carbine and call it the .22 spitfire or similar?
The M1 Carbine has had a fair share of conversion to other chamberings. There was a 22 wildcat, called the 5.7 Johnson Spitfire:
http://www.reloadbench.com/cartridges/wmmj57mm.html
The problem is the cost of forming and reloading dies, the work involved to convert the cases and having the fruits of your labor tossed into the bushes after each shot.
The M1 Carbine has also been converted to larger calibers:
http://www.thegunzone.com/carbine-wildcat.html
Bear in mind that the SAAMI max pressure for the M1 carbine cartridge is 40000 psi when picking a new chambering.
Converting M1 Carbines was a lot more popular twenty+ years ago when they were MUCH cheaper than they are now.
http://www.reloadbench.com/cartridges/wmmj57mm.html
The problem is the cost of forming and reloading dies, the work involved to convert the cases and having the fruits of your labor tossed into the bushes after each shot.
The M1 Carbine has also been converted to larger calibers:
http://www.thegunzone.com/carbine-wildcat.html
Bear in mind that the SAAMI max pressure for the M1 carbine cartridge is 40000 psi when picking a new chambering.
Converting M1 Carbines was a lot more popular twenty+ years ago when they were MUCH cheaper than they are now.
Art Eatman
Staff in Memoriam
Radiusing the bolt by 0.017" might be doable.
Isn't the max load on the usual .357 around 30K to 35K psi?
As far as bore diameter, seems to me that for an ammo manufacturer to set up for a rimless .357 would be no big deal. Or, for a 9mmParaLong. I guess it would be a matter of which selection of existing bullets would be best. .357, most likely...
I'm just trying to stay as close as possible to the KISS principle. Otherwise, it's not worth the effort.
Isn't the max load on the usual .357 around 30K to 35K psi?
As far as bore diameter, seems to me that for an ammo manufacturer to set up for a rimless .357 would be no big deal. Or, for a 9mmParaLong. I guess it would be a matter of which selection of existing bullets would be best. .357, most likely...
I'm just trying to stay as close as possible to the KISS principle. Otherwise, it's not worth the effort.