I'm sure I have a reduced load for 155 gr for BCL-2 that I worked up myself from scratch using Richard Lee's formula. HOWEVER, Lee's formula did NOT work. The resulting load made a big bottle-rocket whooshing sound for a second or two with no detonation. Fortunately, the bullet did launch. I ALMOST dropped BCL-2 right then and there, but eventually decided to make one more try with a heavier charge. THAT one worked and I shot a good many rounds with it. If I recall correctly, I used either exactly the same powder charge with 155 gr as well as 125 or 130 gr (whichever it was), or with a very minor adjustment. However since that one is a total wild hair, maybe I shouldn't be giving it out. The other was, I believe, H4198, and I think it was based on a book load but I don't remember the details including even what book (but Modern Reloading is the most likely suspect). I would suggest, however, that you check Lyman's book on cast bullet loads, the most recent edition. At the time I worked up these loads I didn't have it and now that I have it... its probably out of date... and I've never used it. I have a log of every load and every batch of every load I have ever made, but I can't access it right now. I'll get back with you on this when I can access it. It will be a couple of days.
In my Albanian SKS all of my reduced cast bullet loads cut the MOA of my groups by almost half over Russian commercial ammo at 100 yards. I never fired any of it at a target at more than 100 yards..
NOTE: I may not have tried the H4198 load with 155 gr bullets.