The .45 Super cartridge is dimensionally identical to the original .45 ACP round. However, that’s were the similarity stops. The Super has a thicker head and web than the ACP and is loaded to higher pressures making it substantially more powerful than the hardball .45 ACP. This requires a substantially modified 1911 to effectively deal with the resulting stresses.

Our performance improvement transforms a properly-constructed 1911 into a very serious hunting handgun. When combined with our 7-inch Longslide the results are, in a word, SUPER! Again, from our .45 Super Longslide the .45 Super's 255-grain bullet is launched at 1175 fps - a 40% increase over the standard .45 ACP  230-grain bullet at 830 fps.

To put it another way, when fired from our .45 Super Longslide the .45 Super has more remaining energy at 400 yards than the .45 ACP has at the muzzle. While I’m not advocating the .45 Super as a long range number, the stats just indicate how much more effective the Super is than the standard .45 ACP - when fired from our pistol.

Some consider the 200-grain 10mm Auto as an adequate cartridge for taking boar, deer, and bear, and in the right hands it certainly has that potential. However, the .45 Super with its larger diameter and heavier bullet has more remaining energy at 75 yards than the 10mm has at the muzzle. Again, when fired from our .45 Super Longslide. And, it does so with less stress on the pistol than the 10mm.

Commercial ammunition is available from Underwood Ammo and Buffalo Bore, and Starline makes the brass - and you use standard .45 ACP loading dies to roll your own. What could be easier?

Having been the Testing and Service Manager at AMT (Arcadia Machine & Tool) during their heyday, I had the unique opportunity to test fire over a thousand of their .45 Hardballer Longslide pistols. More importantly, through servicing them, I learned how to make a 7-inch longslide work really well.

Through the ensuing years I have patiently waited for the 1911 makers to resurrect the 7-inch longslide, but to no avail. Yes, there are 6-inchers, but there's just something really special about a full 7-inch longslide. Aside from the longer sight radius, improved performance, and wonderful balance, our .45 Super Longslide just looks awesome!  But, it's not just another pretty face.

When we combine our 7-inch longslide with the potent .45 Super* cartridge, the result is an amazingly powerful and effective hunting pistol. From our 7-inch barrel the .45 Super Longslide launches a 10% heavier bullet (255-grain) 350 fps faster (1175 fps) than the standard 230-grain .45 ACP from a 5-inch barrel. That's a 40% increase in muzzle velocity! The result is a seriously deadly boar, deer, and bear handgun. Plus, you have rapid fire follow-up capability if ever needed.

.45 Super? Never heard of it.

Despite the fact that it has been on the scene since 1988, the .45 Super seems to be one of the best-kept secrets in 1911 land. One would think that a cartridge that delivers such significant performance over the standard .45 ACP would be legend by now. But, it seems not so.

The .45 Super is the brainchild of Dean Grennell, former gun writer and managing editor of Gun World magazine, and was co-developed by Tom Fergerson and Ace Hindman. Today, Garey “Ace” Hindman is probably the foremost authority on the .45 Super and he holds the trademark to the name .45 Super. He's also been of great assistance in the development of our .45 Super Longslide.

Coming soon!  .45 Super Longslide

Outdoor writer Max Prasac shows off a wild trophy longhorn (it's a big thing in Texas) and our .45 Super Longslide while hunting with Action Outdoor Adventures of Hondo, Texas.

The ammunition he used was the excellent Underwood .45 Super with the 255-grain hard cast bullet. In the right hands the .45 Super Longslide firing the Underwood .45 Super ammo is very capable of taking large big game well into the 800-pound class, putting both gun and ammo in the High Performance Hunting Pistol category.

Our thanks to Max for testing the .45 Super Longslide which is, in his words, and I quote, "Bitchin!"

We're glad he approves.

*.45 Super is a trademark of Ace Custom 45s, Inc.  Super Longslide and .45 Super Longslide are trademarks of RJ Renner.

**On average, the .45 Super Longslide provides 100 fps increased velocity with most loads.

Our .45 Super Longslide is intended and designed to be a no-nonsense, ultra-reliable big game hunting pistol. We adhere to the K.I.S.S. (keep it super simple) principle and our design parameters reflect the essential need of simplicity, accuracy, top-quality construction, and dependability under extreme hunting conditions.

The .45 Super Longslide is not your typical overbuilt cream puff 1911. It's simply a powerful, accurate, rugged and reliable pistol that shoots exactly where you point it with enough power to meet your challenges of it. It's a serious handgun for the serious hunter, explorer, and outdoorsman.

Now that having been stated, although the basic pistol will feature the tough-as-nails Cerakote finish, Highly-Finished Presentation Grade guns are not out of the question. We do have fine finishing and engraving artists available so your .45 Super Longslide can be a brute in the field and still be the star at the barbeque.

Presently our prototypes are going through rigorous R&D testing. When completed, my intent is to make a limited edition of these High Performance Hunting Pistols which will be available on a private sale basis.

If the .45 Super Longslide is of interest to you, please send me an email stating your interest and I'll keep you posted with pricing and availability information.

Thanks for your interest.

RJ Renner

An additional benefit of our 7-inch slide is that the added mass of the slide, along with our HPHP (High Performance Hunting Pistol) features, not only dampens recoil, making the pistol very pleasant to shoot with the Super loads, it also allows us to shoot .45 ACP, .45 ACP+P, and .45 Super interchangeably without any modification to the pistol. There has never been such a uniquely versatile 1911 as the .45 Super Longslide. It's a powerful but well-behaved and versatile handgun that most any 1911 aficianado will master quickly.

And speaking of the ACP, if one chooses to shoot .45 ACP  from our .45 Super Longslide, you can expect the same performance as when shooting .45 ACP+P from a standard 5-inch barrel.

The future of the 1911 is here!

radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips, radical grips,


Underwood offers the .45 Super with the 120-grain bullet – yes, that’s correct, only 120 grains - at a velocity of 1600 fps (translate as 1700** fps from our .45 Super Longslide) which I am now inclined to believe is very adequate for humanely taking game up to 350 pounds. While the 200-grain Xtreme Penetrator bullet at 1100 fps (1200 fps from our Longslide) is likely to be just the ticket for large-bodied game up to 750 pounds where heavy shoulder bones need breaking to anchor game right in its tracks.

As I said, I grew up believing in big, heavy bullets for big game. But, I now believe if old Elmer were alive today he would recommend these Underwood .45 Super loads with the Xtreme Penetrator bullets. By combining these Xtreme Penetrators with low-flash powder in nickeled cases, Underwood has developed my new favorite big game ammunition for our .45 Super Longslide.

We can make your .45 Super Longslide as simple or as fancy as you like. However, when putting game in the freezer, the bottom line is bullet performance, plain and simple. I now believe in the new bullet physics as we’ve seen demonstrated from our .45 Super Longslide and Underwood ammo. This ammunition really makes our .45 Super Longslide a real  pocket rifle!

Sorry, Elmer.

For more information about the .45 Super ammunition from Underwood, visit their website:

How about a 10mm Super Longslide

The question has been posed if we'll offer a 10 mm Super Longslide and the short answer is YES!

In time that will come about as the result of you, our potential customers, asking for one. Personally, I like the greater power of the .45 Super as a hunting handgun. But if you already load and shoot 10mm and want a really cool 7-inch 10mm Super Longslide, we can certainly craft if for you. Just give me a call and we can discuss it.

BTW, Underwood offers their 10mm ammo with the Xtreme Penetrators which will take the 10mm to a whole new level of hunting performance - especially from my 10mm Super Longslide!

It's often said that guns don’t kill game – bullets do. I must admit that having cut my teeth on the writings of the Dean of Big-bore Handguns, Elmer Keith, I've been partial to big-bore, heavy bullets for hunting large-bodied game. However, with the advent of advanced engineering concepts and CNC technology, there’s a new kid on the block. It's a new breed of bullet that seems to defy the principles of simple Newtonian physics that we've all come to trust for calculating and gauging killing power of bullets.

While most of our testing of the .45 Super Longslide has been with the outstanding Underwood .45 Super loaded with the 255-grain hard cast bullet – in fact, we test each pistol with a whole box of the stuff – recently we tested Underwood’s .45 Super loaded with the Lehigh Defense Xtreme Penetrator bullets and the results are simply astounding! This is seriously Ultra High Performance ammo.

Old thinking dies hard whether it be fact or fiction. I liked my old-school heavy, hard-cast lead bullets. However, I must admit now that the Underwood ammo loaded with the Xtreme Penetrator bullet has killing power waaay out of proportion to its bullet weight.

It seems that our old standard of comparison, foot-pounds of energy, doesn’t mean much with these advanced-design Xtreme Penetrator  bullets. This owing to their revolutionary fluted design which seems capable of taking whatever available foot-pounds of energy and converting it into devastating terminal performance in big game.