Home Forums Hunting & Shooting Handguns New Revolver Cartridge idea.......

10mmR would be cool. I love the 45 auto rim.
I always wanted a 50 Special. I know some custom revolvers have been made in it. Not looking for magnum performance but something cool to me about those 1/2" holes in a target. One of the reasons I like my 50/70 Trapdoor.

I'm on board with the rimmed 10mm idea.

.41 is too close to a .44. A .39 cal would be "perfect" but with so many .40 bullet options, I think something like a .401 powermag would be ... interesting.

This rimmed 10mm should not be trying to be a .41 or .44 magnum, it should push a 200 grain bullet at 1200 fps from a 4" barreled revolver. I've long said that's my formula for perfect deer medicine, a .40 cal, 200 grain bullet at 1200 fps. More isn't better, more is just ... more.

I have a Ruger Buckeye Special .38-40/10mm ... it's fun to shoot, more snot than a .357 but a lot less buck 'n' roar than the .41 and .44. A rimmed 10 would work .. whether it'd sell enough to survive ... not so sure about that.

200 gr at 1200fps, sure sounds like a 41 special.

Guys build them on the Single Six, thinking an L frame would be a piece of cake.

Would need to make sure it totally avoided fitting the 41 Colt in some way...

make the gun also take 40 S&W and 10mm in moon clips and you can sign me up for a couple....

Me thinks he's referencing splitting hairs, in this case a Red C**t Hair, the tiniest unit of measurement known to engineering science.

And for the OP, a GP100 in 41 Special does 220-230 gr lead at 1200.

GP100 in 41 spec.....very intriguing.

Any suggestions as to a 'smith to do the work, and estimated cost?

Between the purchase of the gun, shipping and the work...pushing $15-1800....

http://www.clementscustomguns.com/gp100.html

I've thought about it but with having the stainless and Ti Trackers just could not justify it...

Bob

Modern .40 caliber revolver rounds evolved in the 1920’s when Pop Eimer developed his .401 wildcat. Essentially, the .401 Eimer was a Winchester Self-Load case that was trimmed back to 1.21” and shot in altered Colt single actions. Its performance was impressive with 200 grain bullets topping out around 1,200 fps when placed over 2400 powder. Gordon Boser further developed the round in the 1940’s and in time a few Colt double-actions were converted to .401.

Herters Incorporated unveiled its .40 caliber magnum in 1961, and based it on a very strong Sauer & Sohn single-action. It was called the .401 Powermag and was a good performer with bullets ranging from 160 to 200 grains. It sold, but was never distributed in a way that promoted a national following. Remington and Smith & Wesson followed suit in 1964 with the .41 Magnum, which was loaded at two power thresholds.

What many don’t realize though, is that a third middle-bore magnum almost came to be…..namely, the .400 Colt Magnum. There isn’t a lot of history on the cartridge, other than the fact that it was devised in the early 1960’s. As I understand it, Bob Roy of Colt originally
modified .30-30 cases to create the .400 Magnum, and Winchester latter provided loaded prototypes. I was fortunate enough to obtain two of these and found the headstamps to read “W-W, 400”. Both are issued with what appears to be the same 200 grain soft nose bullets that Winchester used in the .38-40. Also, one of the cases is grooved, while the other is not. In terms of its dimensions, the .400 is quite similar to both the the .401 Powermag and .41 Remington Mag as illustrated below:

.400 Colt .401 Herter .41 Magnum
Case Length 1.275” 1.285” 1.290”
Web Diameter 0.420” 0.426” 0.434”
Case Mouth 0.417” 0.425” 0.434”
Rim Diameter 0.463” 0.483” 0.492”