burkdog Posted January 6, 2012 Share Posted January 6, 2012 I have loaded several hundred rounds using Montana Gold 124 gr. fmj's over 4.7 grains of Winchester WSF, with a 1.169 OAL. I got the recipe right off the Hodgdon website. Bullet Weight - 124 GR FMJ Manufacturer - Winchester Powder - WSF Bullet Diam. - .355" C.O.L. - 1.169" Grs. - 4.7 Here's my question: This load has run fine through my Glock 17, using my factory mags and some kci mags. I've run probably a dozen or more idpa matches and never had any problems until recently. I recently purchased a couple of after-market magazines that I thought were kci, but I guess maybe they are not. In any case, that OAL seems to be a little bit too long for the new magazines. I can get them loaded, but then the spring won't push them up after the first round gets loaded into the gun. Also, I ran a bug match with a little kel-tec pf-9, and while the bullets all fed and fired with no problems, on my "unload and show clear," the bullet in the gun was onto the lans or rifling, and would not let go. I had to pull so hard on the slide that it pulled the case away from the bullet, which stayed in the barrel. We had to knock it out with a push rod. That happened twice, and then I got the RO to let me fire the last round out rather than wrenching the case off the bullet. Again, fired fine everytime, just wouldn't come off the rifling. All that to say, I want to try decreasing the OAL to see if it will help with the feeding in the new mags, and with the kel-tec. 4.7 grains seems to be working fine. I have not chrono'd the load, but have to assume it is pretty close to what is listed on the Hodgdon site, which is 1015 ft/sec., and 27,700 PSI. About how much can I safely decrease the OAL, leaving the powder at 4.7? And if the answer is "not enough," can I lower the powder charge, and the OAL, and still end up around the same pressure? I'm not overly concerned about the performance of the load, beyond reliable feeding in the magazines, and the the other 9's I own. Your comments are appreciated. Thanks, Greg Quote Link to comment Share on other sites More sharing options...
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