I have two new 1911s: a Colt Series 80 (chambered for .38 Super) and a Remington R1 (for .45 ACP).
The Colt instruction manual says, "
Extensive use of +P ammunition will accelerate wear in your pistol."
The Remington website
www.1911R1.com says, "
The 1911 R1 is designed for use with industry standard SAAMI spec ammunition. It is not designed for use with +P ammo nor is it recommended that this ammo be used in your firearm."
I seem to recall reading that any recently manufactured 1911 should be good with +P. I'm not too concerned with the Colt warning, but I'm a bit surprised at Remington's prohibition. Thoughts? I wonder what other current 1911 manufacturers say about the use of +P?