Hello, looking for a little help with leading, in a 9mm no less .
Facts
Gun: Gen 3 Glock 17 OEM barrel
Bore: .3555
Previous success: .355 & .356 commercial HiTek, .358 lubed COWW water dropped; to the tune of 1k between cleanings requiring only Hoppes and patches.
Current bullet: NOE HTC 133gr 358 RN sized .357" after PC.
Alloy: COWW
PC: Dark metallic grey & HF Red; cooked 20min after gel @ 400°F
Coating thickness: roughly .0005-.00075" seeing dia growth of .001-.0015"
Pulled dia: .357", ring present at case mouth too narrow to mic, backing off crimp still leaves trace when there's enough spring back to leave the case slightly belled.
Loading on LnL, expand with .38S&W, seat and crimp separately.
Brass: Winchester. Primer: WSP. Powder: Bullseye & ClayDot. Velocity: 970-1000fps.
I'm getting pretty severe leading in the last half of the bore over the course of a match ~200rnds, strangely accuracy remains very good zero indication of tumbling. Substantial smoke haven't paid attention to whether it is progressive. Have not recovered any bullets that have not hit steel. Smash test with hammer shows good adhesion/no flaking. Anyone have any ideas? Getting tired of scraping out lead with Chore-Boys. Thanks