by the way, i sent this to a gunwriter friend of mine, as i sent him some 429421 powdercoated bullets to play with. He was wondering if there was an increase in velocity.
I checked back in my notes and:
model 29 s&w 4inch
310lee gas checked 44mag sized .431
1.60oal
13.5gr of 2400
1.976fps
2.954fps
3.963fps
4944ps
5955fps
6.989fps
same bullet same gun, same load but powdercoated:
1.round was off so dropped it
2.1053fps
3.1051fps
4.1054fps
not a lot but powdercoated did add some
