![]() Increasing the magazine springs make loading too hard for the finger strength of most men. Such springs move the slide too fast for normal magazine springs to feed. To get that with +P++++++++++++++++ loads, the recoil spring assembly would require more grip than most men have in order to chamber a round. The recoil springs should be sized so that the brass should land 5 feet from the shooter. It is bad form to work up a load in one gun and then shoot it in another gun with less case support.Ĩ) Most 9mm pistols can shoot loads so hot that, although no pressure problems, recoil problems result. A huge pressure spike could result.Ģ) I wrap a towel around the pistol and my shooting hand, to catch the ejected case.ģ) Each case in a 0.1 gr incremental work up is examined under magnification before proceeding to the next load.Ĥ) If a piece of brass has a guppy belly from the lack of support over the feed ramp, the work up is stopped and the load noted.ĥ) If a primer pierces, the work up is stopped and the load noted.Ħ) Useful loads have a powder charge reduced by a safety margin from the pressure sign that ended the work up.ħ) 9mm brass typically has a. Compressing powder can fatten a bullet and it can be pinched in the chamber. If an increase in powder pushes the bullet out and into the lands, a spike in pressure can result. What I now do to keep me, others, and my pistols safe in hot rod 9mm work ups:ġ) Make sure each loaded round can completely drop into and out of the chamber. I have worked up thousands of 9mm loads with every bullet and powder I can find, to find the real pressure limit. Re: What brass to use for +p+ type loads in 9mm
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