Hey all, I made it out to the range on Sunday... it was nice and cool, about 73 degrees and overcast when I got there... AHHHH!!! Got to try out my experimental cast loads.... Here's the story. Grafs in my area sells an inexpensive cast bullet in 155gr LSWC, 175gr LSWC and 180gr RNFP. They go for about $8.50/100 which is quite cheap compared to even the usual plated bullets I buy (Berry's or Rainier's at $16-18/100). I really like the cast bullets but I have no idea how hard they are so I didn't really know how hard to push them. I always got great accuracy with them using mousefart load levels of HP38 but I also always got really bad leading, which really made me NOT want to use them at all. Too much trouble. Lately however I've been learning as much as I can about shooting cast lead and I set up some careful experiments to determine if I could get the bullets to run clean in my G20SF w/ 6" KKM (for simplicity, my Fusion will be later, after I nail down most of the problems w/ the KKM). From what I've been learning, my main problems are probably that the bullet is too hard or is not sized correctly...or not lubed well enough. Rather than immediately address what I think the REAL problem is (bullet size), I thought I'd do what I can do NOW: adjust my charge and lube situation since this doesn't require me to buy more, different bullets. I stopped at Graf's and bought a $6 bottle of Lee ALOX lube and a bag of 100 180gr RNFPs. (FWIW, I have slugged my barrels and the KKM is .400". My Fusion is .401" so I KNOW that a .402 bullet will probably be my FINAL answer but I don't have cash to order a custom batch of bullets right now so here's what you get!) My ORIGINAL load (that leaded quite badly) was the 175gr LSWC over 5.5gr HP38. I loaded my new batch of bullets with three different powders: Longshot, Blue Dot and HP38. ALL of the charges were hotter than before, as I suspect that these bullets are on the HARD (16-18 BHN) side rather than SOFT (5-14 BHN) side. My loads are as follows: 15 - 8.5gr LS (Alox lubed) 15 - 8.5gr LS (unlubed) 15 - 10.5gr BD (Alox lubed) 15 - 10.5gr BD (unlubed) 20 - 5.5gr HP38 (Alox lubed) 20 - 6.0gr HP38 (unlubed) As you can see, the idea initially was to try a hotter powder/charge-combo to see if it would allow the bullet base to better obturate in the barrel and eliminate leading. The secondary tweak was to use Alox tumble lube to see if that helped with leading. Remember, I had pretty serious leading with my original 5.5gr HP38 under the 175gr LSWC. After each string, I field stripped my G20 and bore-snaked my barrel, after which the bore was shiny and pristine to conduct the next series. Here are my observations: 15 unlubed LS - light leading but still way better, some leading at edges of lands/grooves but no chunks, accurate! (1". one-hole @ 15y) 15 lubed LS - some powder crud / soot near chamber but hardly ANY lead visible! almost clean! 15 unlubed BD - nasty, 1st half of barrel pretty gross, not huge chunks but nasty nonetheless 15 lubed BD - nasty near chamber w/ soot and a few small chunks of lead near chamber but STILL overall better than initial 175gr loads ... 20 unlubed HP38 (6.0gr) - lots of soot near chamber but CLEAN afterwords for whole barrel! nice 20 lubed HP38 (5.5gr) - GREAT!! not much of any soot and CLEAN AS A WHISTLE! As you can see, I had some success here!! I first learned that I can push these bullets quite a bit harder than I was without it CAUSING leading ... I think, to a point, more pressure will actually REDUCE leading. I also learned that Alox lube ALWAYS at least HELPS. I'm a bit confounded as to why the LS didn't lead but the Blue Dot did pretty badly. I tried to make the LS / BD loads similar in power.... hmmm. Next steps will be to bump up my LS charge but do not tumble lube. Second thing I learned is that 6.0gr HP38 under a 180gr RNFP is a sweet load! More to come.... Wanna kill these ads? We can help!