I agree here because..
Quote:I don't load a full magazine behind a chambered round. Too high a probability that the pistol will jam on the first shot; but, you do whatever you want.
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I agree here, as it has happened numerous times with my Sig P232 380, after the first shot, with either FMJ or JHP and, it happened, after the first shot with my Colt Defender 45, with either FMJ or JHP, with one chambered, and full magazines.
And it is after the first shot, any, and every, time it has occurred, at the range, with clean, well lubed, new ammo, with both guns.
It has never happened with my Beretta, Sig P229, P220, or Springfield EMP 9mm. But the principal remains the same, maxed out pressure on the magazine spring load, and I'm not willing to risk a first fired shot, then jam, for the one extra bullet, vs 7, 8, 9, or 10 good shots, every time, with any of my HD/SD guns.
My other thought, besides the maxed pressure on the top full round below the chambered round, on the magazine spring, is simply, if one cannot handle a real-time need of ones gun in a HD/SD situation with, as in my case, 7 rounds, or any of the other guns, 7-8 rounds/45's, 10 rounds with Sig 9mm, Beretta 40cal, 9 rounds EMP 9mm, with a full back-up magazine, then it probably wouldn't have mattered that I had one round extra, to start off with, vs the possibly, and the "thought of knowing" that I hope the gun wouldn't or doesn't jam after the first shot, because IMHO, the first 2 -4 shots are gonna tell the story, vs a jam after the first shot..
Stick with normal loads for your gun/s and that possibility, and the negative thought, "could it happen", will not come into a situation of "playing for real."
LS
PS. I was having a, what is termed by 1911Tuner, a bolt-over misfeed with my Colt Defender, and it was clean, and lubed, but 1911Tuner said, it was either because of the slide not not making full travel, making for a mag zine timing issue, and to make sure that the rails were "well lubed", or it was a return spring issue. So yesterday, I took my Colt Defender to the range, clean, rdy, and just before leaving the house, I put some extra oil down the rails, letting gravity take it down, cycled the slide a few times, and went to the range. It shot, without one feed problem, 100 rounds of FMJ range ammo, along with 20 185gr JHP's, and 7 rounds of each, I shot one handed, not limp wresting, but that was mentioned by many, as one of the Defenders problems with jamming.
She shot everything, every time, on target. So research your gun/s, find out which ones are forgiving in the running on the dry side, vs the ones that need to be lubed/wet, to function at the 100% level, as all it takes with a non-forgiving gun, is a tad too dry and you will get some kind of problem, whether a feeding issue/jam, or a chambering problem.
And one does not need either of these, if he knows the plus and minuses of each gun in lubrication's needed, and full loads + 1 for a max loads, and what could happen if one of these demanding areas is not quite right.. non-forgiving.
Go for the "forgiving" road-of-thought IMHO, and you'll be better-off for it.
PSS.. thank you 1911Tuner, for the right call, as confidence/knowledge is a "wonderful friend."