Here is some data you might use. Most use in revolvers chambered to 45ACP, though. And some report increasd wear from the heavy bullets on the breechface.
.45 ACP - IPSC Heavy-Bullet Major Loads + P (Oregon Trail Handgun Data) Reloading Data Printable Version
Warning! Notes: test gun: Entreprise 1911 frame, 5" Bar-Sto barrel, WLP; OAL: 1.168; use these loads exactly as listed; these are MAXIMUM loads - do not exceed charges, or shorten overall lengths; do not fire these loads in pre-1950 revolvers; for use in pistols with fully supported chambers only
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
250 Round Nose Flat Point Hodgdon Clays 3.3 700
250 Round Nose Flat Point Hodgdon Titegroup 3.8 725
250 Round Nose Flat Point Accurate Solo 1000 3.5 733
250 Round Nose Flat Point Alliant Bullseye 3.9 735
250 Round Nose Flat Point Alliant Unique 5.0 745
.45 ACP Remington Enhanced Model 1911 R1 Reloading Data Printable Version
Warning! Notes: All loads used Federal Gold Medal Match 150 primers and Starline cases. Minimum cartridge OAL: 1.190 inches; maximum cartridge OAL: 1.275 inches; maximum case length: .898 inch; and trim length: .888 inch. Temperature was 33 degrees Fahrenheit during testing. (Handloader Issue #277 - April, 2012)
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
250 Oregon Trail cast RNFP Alliant Power Pistol 6.5 934
And some heavier data just in case you think you can work up some safe loads using this data…
.45 ACP Standard Loads Reloading Data Printable Version
Warning! Notes: case: Rem. primer: 300; barrel length (inches): 5 (Handloader Issue #172 - December, 1994)
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
260 Speer JHP Hodgdon HS-6 8.0 860
.45 ACP +P Loads Reloading Data Printable Version
Warning! Notes: Barrel length: 3 1/2 inches. Case: Win. Primer: WLP. Developed by Hodgdon, these +P handloads first appeared in that company's No. 26 Data Manual. The use of a heavier than normal recoil spring is recommended to prevent accelerated wear caused by the frequent use of these loads in autoloading handguns. (Handloader Issue #172 - December, 1994)
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
260 Speer JHP Hodgdon HS-6 8.9 917
260 Speer JHP Hodgdon HS-7 10.0 914
.45 ACP (Speer Reloading Manual #11) Reloading Data Printable Version
Warning! Notes: gun: Colt Gov't. Model; barrel: 5"; twist: 1-16; cases: Speer; primers: CCI-300; maximum loads listed should be used with caution
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
260 Speer Hollow Point IMR 800-X 7.2 864
Remarks: maximum load
260 Speer Hollow Point IMR 800-X 6.6 802
260 Speer Hollow Point Alliant Green Dot 5.8 819
Remarks: maximum load
260 Speer Hollow Point Alliant Green Dot 5.3 751
260 Speer Hollow Point Alliant Herco 6.9 847
Remarks: maximum load
260 Speer Hollow Point Alliant Herco 6.3 775
260 Speer Hollow Point IMR SR-7625 5.6 802
Remarks: maximum load
260 Speer Hollow Point IMR SR-7625 5.1 733
260 Speer Hollow Point IMR SR-4756 6.4 830
Remarks: maximum load
260 Speer Hollow Point IMR SR-4756 5.8 752
260 Speer Hollow Point Alliant Bullseye 5.2 788
Remarks: maximum load
260 Speer Hollow Point Alliant Bullseye 4.7 717
260 Speer Hollow Point Alliant Unique 6.4 822
Remarks: maximum load
260 Speer Hollow Point Alliant Unique 5.8 740
260 Speer Hollow Point Alliant Red Dot 5.1 817
Remarks: maximum load
260 Speer Hollow Point Alliant Red Dot 4.6 748
260 Speer Hollow Point Winchester W-473AA 6.1 803
Remarks: maximum load
260 Speer Hollow Point Winchester W-473AA 5.1 741
260 Speer Hollow Point Winchester W-452AA 5.0 786
Remarks: maximum load
260 Speer Hollow Point Winchester W-452AA 4.6 712
260 Speer Hollow Point Winchester W-231 5.9 824
Remarks: maximum load
260 Speer Hollow Point Winchester W-231 5.4 756
260 Speer Hollow Point IMR 700-X 4.9 794
Remarks: maximum load
260 Speer Hollow Point IMR 700-X 4.4 722
.45 ACP (Alliant Pistol & Revolver Data) Reloading Data Printable Version
Warning! Notes: primer: Federal 150; bbl length: 5.0; do not exceed powder weight shown
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
260 JHP Alliant Bullseye 4.5 725
Remarks: min. OAL (inches): 1.210; 19,400 psi
260 JHP Alliant Unique 5.4 760
Remarks: min. OAL (inches): 1.210; 19,400 psi
260 JHP Alliant Herco 5.9 750
Remarks: min. OAL (inches): 1.210; 18,600 psi
260 JHP Alliant Blue Dot 8.3 780
Remarks: min. OAL (inches): 1.210; 19,000 psi
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