Originally Posted by Airdale
Not being a wise arse but why +P? The .45 is a plenty powerful round for SD unless you're hunting grizzley. Why beat up your 1911?
Sometimes, +P is more readily available or more economical. This seems to be more true for .38 Super than for .45.
But, even though I use regular, not +P, when readily available, I wonder about a modern gun for which +P is more or less prohibited. The maximum SAAMI pressure limit for regular .45 ACP is 21,000 psi vs. 23,000 for +P, a difference of a bit less than 10%. And that is for the maximum
pressure. I would prefer that a gun not be within 10% of the maximum allowable pressure - since there are always possible variations in loads, barrels, etc. I can understand and accept a gun that maybe wears out a bit quicker with +P, but I would like more than a 10% safety margin.