Magnum Autos Revisited

When I took up the subject of a magnum semi-automatic pistol a while back, I must have failed in my efforts to get one point firmly established. The only way to create an automatic pistol that provides the same kind of performance as the magnum revolvers is to build a bigger auto. This has been done with the Coonan, Desert Eagle, Wildey and Grizzly pistols. While all of these guns met with varying degrees of commercial success, they were all so big that they were difficult for most handgunners to carry and shoot comfortably. Readers have commented in such a way that I believe what they are asking for is a handgun the size of a conventional 1911 that delivers at least .357 Mag. performance. Some have asked for a .45 loaded up to higher levels of pressure and velocity performance. In my view, this is not a good idea.

There have been a couple of efforts to build such a gun, sometimes involving wildcatting. While some of these souped-up 1911s have met with limited success, they never seem to be durable. Even hot commercial rounds like the 10 mm Auto and 9x23 mm Winchester, which were commercially loaded by Colt and others, exist in pistols that don't have long service lives. If they are used at all, the full velocity loads in these guns should be used sparingly. And who wants to use a favorite gun “sparingly?”

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5 Responses to Magnum Autos Revisited

harp1034 wrote:
September 19, 2011

Maybe someone could make a .357 Sig in 1911.

Clay Cooper wrote:
September 14, 2011

If you want 44 Magnum performance out of a 1911A1, then I suggest the .460 Rowland. You use teh same 45 ACP dies except the 460 case is a fraction longer to prevent shooting in a 45 ACP. http://460rowland.com/

Gary wrote:
September 14, 2011

Actually, 230 grains @ 1100 fps is available now. That is a meaningful increase over the standard .45 ACP and we can thank Dean Grennell for coming up with the idea of the .45 Super back in 1988. To get up-to-speed, go to http://www.acecustom45s.com/45super.htm The secret, of course, is to beef up the .45 ACP case and eliminate the un-supported chamber that leaves the rear end of the case hanging out in space. Why manufacturers insist on shorting us on barrel material in the loading ramp area makes no sense. They are perfectly capable of making 100% reliable-feeding fully-supported barrels for their .40s. A "modern" M1911 designed to handle a few more psis would be a slam-dunk. After all, Ace has been converting all manner of pistols for years to handle the .45 Super. Come on manufacturers, we've been stuck with the .45 ACP for a hundred years. Who's going to be first to push the old .45 auto into the 21st century?

Aaron wrote:
September 14, 2011

I have read different ballistic data on the .357 Sig vs the .357 Remington Magnum that have placed the Sig in line and in some cases superior to the Magnum. It is snappy to fire, but if the ballistic reports are accurate, that is what I would go for. What are your thoughts?

Phillip wrote:
September 14, 2011

Big auto's have a Catch 22: To be proficient they have to be practiced a lot but they cost too much to practice enough. I have a 10mm steel frame Smith and even with reloading, its expensive because of the sheer number of rounds per week expended learning to shoot it well. However, if one of my Buffalo Bore 180's connects with Mr. BG, it's game over!