45 Super Coversion from 1911

[Alaska Bush Man]

1911 gold Cup Steel Frame Coversion to 45 Super
Or like pistol no aluminum frames !

1911 45 Super Upgrade

Wilson Combat Parts for a .45 Super‑Ready 1911

Below are the exact Wilson components that matter, why they matter, and which ones are optional vs. mandatory.

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1. Wilson Combat Heavy Recoil Spring (22–24 lb) — Mandatory

Part: #10G22 (22 lb), #10G24 (24 lb)
Role: Controls slide velocity and reduces frame battering.
Notes:

• Most .45 Super 1911s settle at 24 lb for full‑power loads.
• If your gun struggles to return to battery, drop to 22 lb.


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2. Wilson Combat Flat Bottom / Small Radius Firing Pin Stop — Mandatory

Part: #7B (Bullet Proof FPS)
Role:

• Delays initial slide movement
• Reduces lug stress
• One of the most effective upgrades for .45 Super control


This is a must‑install part for any high‑pressure 1911.

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3. Wilson Combat Heavy Duty Firing Pin Spring — Mandatory

Part: #26 (Extra Power Firing Pin Spring)
Role:

• Prevents primer flow
• Prevents inertia firing under heavy recoil


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4. Wilson Combat 23 lb Mainspring — Mandatory

Part: #417 (23 lb)
Role:

• Adds resistance to slide opening
• Reduces lug stress
• Works with the FPS to slow the system down


This is a key part of the “delay the slide” strategy.

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⚠ 5. Wilson Combat Ramped, Fully Supported Barrel — Mandatory if your gun is non‑ramped
KKM is my preferred Barrel

Part: #33 Series (Nowlin/Wilson ramped barrels)
Role:

• Provides full case support
• Prevents case blowout at .45 Super pressures


If your 1911 already has a ramped barrel (many modern ones do), you’re good.
If not, this is the single most important upgrade
KKM Barrel

12.6 of Accurate No 9
250gr Rim Rock TS RNFP
CCI 350
WW 45 ACP Brass
1.200”
1075 FPS in 5”

 

[Aaron23]

I wonder why my 460Rowland works just fine without a ramped barrel?

Instead of a single heavy weight spring I would also suggest a calibration pack from wolf. No way that one weight spring is going to work the best for all different loads one might be firing.

 

[bozo699]

Thanks for the information, I’m currently gearing up for a 45 super build.
Wayne

 

[GetReal]

100 on the post.

Points deducted for no pic.

 

[Alaska Bush Man]

100 on the post.

Points deducted for no pic.

My G21 Gen 4 looks basically like every other !
With KKM barrel and Leupold DPP.

 

[GetReal]

Points restored for posting pic.


Of polar bear..

 

[Alaska Bush Man]

Thanks for the information, I’m currently gearing up for a 45 super build.
Wayne

Yes highly recommend Wilson parts above for 1911 their top tier with KKM barrel . With the KKM barrel with that great case support I see no reason to use Starline 45 Super Brass. Regular WW 45 ACP brass works just fine for 45 Super Loads. Don’t recommend +P brass !

 

[bozo699]

Yes highly recommend Wilson parts above for 1911 their top tier with KKM barrel . With the KKM barrel with that great case support I see no reason to use Starline 45 Super Brass. Regular WW 45 ACP brass works just fine for 45 Super Loads. Don’t recommend +P brass !

Do you have a 1911 45 super?
Wayne

 

[Alaska Bush Man]

Do you have a 1911 45 super?
Wayne

Wayne
My son has a Ruger 1911 I set up for him. Myself It’s a Glock 21 setup for 45 Super. I see no reason to go past 13.0 of AA9 with the CCI 350 primer in WW cases using the 250gr Hardcast for Bear protection . In 5” KKM it’s over 1100fps to 1125fps.