OK, noob to lead here. Fairly new to handloading as well - just shot up my 1st 1k of plated, and with all the availability problems, decided to give some MBC lead a go. Got 125gr LRN, Brinell 18, .356 boolits. Using Accurate #5, 5.7 grains. (load calls for 5.4 - 6.0 from AA and 5.6 - 6.2 from Lee data. speeds right around 1000fps) OAL of 1.100. Shooting a M&P Pro 9mm, 5". Loaded 5.5, 5.7 and 6.2. Used 3 loads of 10 boolits each load. Very good accuracy at 5.7gr. Tried to chrono, but couldn't get the range's Chrony to play nice.
So after a good cleaning prior to shooting the lead, I inspected bore & all seemed factory-fresh. Just cleaned now, and found very light streaks of what I assume to be lead in mid to end bore. Both on grooves & rifling. Looks like long sort of broken-up streaks.
Question: assuming this is leading, and that it's near the muzzle end, it's probably from pushing the lead too fast when I used the higher-end load? (wish the chrono worked!) OR, is there always some leading associated with shooting lead boolits? That's really the info I'm after, I suppose.
My next test will be with a clean bore & the 5.7 load only.
Thanks for the feedback!
So after a good cleaning prior to shooting the lead, I inspected bore & all seemed factory-fresh. Just cleaned now, and found very light streaks of what I assume to be lead in mid to end bore. Both on grooves & rifling. Looks like long sort of broken-up streaks.
Question: assuming this is leading, and that it's near the muzzle end, it's probably from pushing the lead too fast when I used the higher-end load? (wish the chrono worked!) OR, is there always some leading associated with shooting lead boolits? That's really the info I'm after, I suppose.
My next test will be with a clean bore & the 5.7 load only.
Thanks for the feedback!