Backup handgun for surprise close hunting situations.

[entoptics]

I am not sure were you are getting your info, but my 230 cast RFN can be driven well over 1,200fps, but I keep them at the 1,200 mark, so that is 735ft/lbs.

https://www.midwayusa.com/45-super/br?cid=10572

Buffalo and Underwood aren't known for being shy about pushing stuff hard, so I assumed their offerings (and Wikipedia) would be representative of upper end 45 Super. All the 230 gr stuff on Midway runs 1100 fps and 620 ftlbs. The 185 gr ashtray stuff does approach 700 ftlbs though.

 

[del2les]

https://www.midwayusa.com/45-super/br?cid=10572

Buffalo and Underwood aren't known for being shy about pushing stuff hard, so I assumed their offerings (and Wikipedia) would be representative of upper end 45 Super. All the 230 gr stuff on Midway runs 1100 fps and 620 ftlbs. The 185 gr ashtray stuff does approach 700 ftlbs though.

The hardcast lead designs run about 100+fps faster than the jacketed ones, and with careful loading with varied powders and bullet designs, even that can be exceeded without excessive pressure beyond the Super's head limits. Remember, factory loads must remain safe in numerous gun designs and barrel tolerances that the ammo companies have no control over. I've been loading it for many years, and have quite a bit of data and experience with it.

To add to this, if one really wants to go for more horsepower without going to the expense of the 460 Rowland, simply buy the 460 Rowland brass and trim back 1/16" to ACP/Super length and load accordingly. The Super case head is rated at 28kpsi and the 460 Rowland head comes in at 40kpsi. Just make sure you are running a 30+# springs and recoil buffer and do not use them for a lot of target practice.

 

[Methow Packer]

I switched to a 25# flat wound spring in my Kimber 10MM and shoot a smokin hot 200 Gr. Cast bullet. I am pretty confident in it.

Howdy. You spark my interest. What's smokin hot.Over 1400FPS. What powder? Long shot? Blue Dot? Can you share your loads? Tolerable pressure?

 

[KyCarl]

It's not a published load and it would be dangerous in a Colt Delta so I better keep it to myself. But no, less than 1400 but very little under.

 

[Bravo 4]

To add to this, if one really wants to go for more horsepower without going to the expense of the 460 Rowland, simply buy the 460 Rowland brass and trim back 1/16" to ACP/Super length and load accordingly. The Super case head is rated at 28kpsi and the 460 Rowland head comes in at 40kpsi. Just make sure you are running a 30+# springs and recoil buffer and do not use them for a lot of target practice.

My .460 was simply an aftermarket barrel that had a .45acp reamer punched the chamber a little deeper. Think it cost me $20 to have done. Why not just do that? I can run .460 Rowland, .45 Super and .45 ACP with the upgraded springs without changing anything but a magazine.

 

[ATH]

Howdy. You spark my interest. What's smokin hot.Over 1400FPS. What powder? Long shot? Blue Dot? Can you share your loads? Tolerable pressure?

It's pretty hard to beat Longshot for velocity in the 10mm with 200gr bullets. Start with the book loads, there's nothing magical about it. I have taken deer with my 10mm Kimber within bow range, and I hope to get a longslide 10mm to hunt with too.

 

[del2les]

My .460 was simply an aftermarket barrel that had a .45acp reamer punched the chamber a little deeper. Think it cost me $20 to have done. Why not just do that? I can run .460 Rowland, .45 Super and .45 ACP with the upgraded springs without changing anything but a magazine.

Head-space issues? The 460 Rowland case is about 1/16" longer than the Super/ACP case. Are you head-spacing on the case mouth?

 

[Methow Packer]

It's not a published load and it would be dangerous in a Colt Delta so I better keep it to myself. But no, less than 1400 but very little under.

Understand. I've learned that Colt Delt chambers don't fully encase the cartridge making it less tolerable to full house loads. Anyway any load that comes close to 1400 FPS with that bullet is a heavy hitter

 

[Bravo 4]

No issues, the Glock extractor picks it right up and holds it in place during firing.

 

[del2les]

No issues, the Glock extractor picks it right up and holds it in place during firing.

Yea, as I thought. That is a surefire way to have a future failure, and with Murphy's Law, when you need it to work the most. I'll stay with proper head-spacing. YMMV

 

[memtb]

Yea, as I thought. That is a surefire way to have a future failure, and with Murphy's Law, when you need it to work the most. I'll stay with proper head-spacing. YMMV

Which is a good way of saying.....go with a revolver! memtb

 

[del2les]

Understand. I've learned that Colt Delt chambers don't fully encase the cartridge making it less tolerable to full house loads. Anyway any load that comes close to 1400 FPS with that bullet is a heavy hitter

Sounds high pressure limits, for most high end 10mm 200gr cast loads in a 5 inch are in the 1,250fps or so range. I have pushed the 1,300 mark with a heavy load of Power Pistol, but it showed too much pressure for my liking. YMMV

 

[Bravo 4]

Yea, as I thought. That is a surefire way to have a future failure, and with Murphy's Law, when you need it to work the most. I'll stay with proper head-spacing. YMMV

I'm not concerned with it, I still have the OEM barrel for .45 ACP and one for the .460, think I'm covered. The only reason to fire .45 in the longer chamber is if I'm too lazy to do a 1 minute barrel change. Not gonna carry it around town, not with a 6.6" barrel plus a break. I have other pistols for carry.

 

[entoptics]

Head-space issues? The 460 Rowland case is about 1/16" longer than the Super/ACP case. Are you head-spacing on the case mouth?

The extractor will hold the case in place, so if everything is in good order, the shorter case will fire fine.

I wouldn't personally endorse this (or 40SW in a 10mm chamber), but there's plenty of interweb examples of people doing it without dying...