.45ACP to 10mm
- Thread starter Cal4D4
- Start date
10mm too much
I understand the cautions, but somehow Clark is able to operate the 1911 at approx. 35K pressures with the .460 Rowland using heavier springs and a compensator to help delay unlocking. The .460 Rowland should have a substantially higher recoil impulse and certainly achieves 10mm pressures. I have not compared slide mass with Glock's G20, but I doubt whether it is any greater than typical 1911 slides. Why not full power 10mm in a 1911 platform? What does the Delta Elite do to survive this? I've got an early 1076 but want a 1911 style - want a 610 also, but we all know that story. Is the used market Delta the only reasonable path?
I understand the cautions, but somehow Clark is able to operate the 1911 at approx. 35K pressures with the .460 Rowland using heavier springs and a compensator to help delay unlocking. The .460 Rowland should have a substantially higher recoil impulse and certainly achieves 10mm pressures. I have not compared slide mass with Glock's G20, but I doubt whether it is any greater than typical 1911 slides. Why not full power 10mm in a 1911 platform? What does the Delta Elite do to survive this? I've got an early 1076 but want a 1911 style - want a 610 also, but we all know that story. Is the used market Delta the only reasonable path?
teufelmann55
New member
Do you not need a 10mm slide also to do the conversion, due to breech face width of a 10mm vs a .45 ?(.425" vs. .480")
Also, the 10mm uses a smaller diameter firing pin than the 45 since it is higher pressure.
Slide, ejector, bbl, bushing, recoil spring, mag all should be changed. And even then I'm not sure if the frames are beefed up on 10mm or not.
It's a little bigger project than you might think.
Slide, ejector, bbl, bushing, recoil spring, mag all should be changed. And even then I'm not sure if the frames are beefed up on 10mm or not.
It's a little bigger project than you might think.
10mm Pipedream
Breechface, springs, barrel, bushed firing pin, compensator and still unknowns. Looks like the smart money goes to a used Delta or maybe I should try the Glock. That would be a new one for me. Must be some reason Kimber, etc aren't putting out a 10mm. Thanks all for the input.
Breechface, springs, barrel, bushed firing pin, compensator and still unknowns. Looks like the smart money goes to a used Delta or maybe I should try the Glock. That would be a new one for me. Must be some reason Kimber, etc aren't putting out a 10mm. Thanks all for the input.
CastleBravo
New member
As a practical matter you can't convert a .45 ACP 1911 to 10mm. I asked Bar-Sto about it and they said, basically, that all the dimensions for everything that matters are wrong. 
You CAN convert a .40S&W 1911 to 10mm easily enough, and as long as you have a good steel frame and good recoil setup (FLGR, 24lb spring, shok buff) it should be fine. It is probably easier and cheaper to just get a used Delta Elite; they are great guns and you can get blue ones for as low as $600 if you shop around.
You CAN convert a .40S&W 1911 to 10mm easily enough, and as long as you have a good steel frame and good recoil setup (FLGR, 24lb spring, shok buff) it should be fine. It is probably easier and cheaper to just get a used Delta Elite; they are great guns and you can get blue ones for as low as $600 if you shop around.