The short of it: a good friend can't find ammo for his 30-30. I have a load worked up for my 30-30 that shoots well. It's a Lee 170gr GC, powder coated. It's a full power load that even shoots very close to point of aim for factory 170gr JSPs. The lead is range scrap with maybe 10-15% linotype. (I know, I'm not terribly scientific)
I don't even want to get into the whole "don't share your reloads" thing; he's been a good friend for the better part of half a century, and one of the few people I have no problem sharing my reloads with.
The question is: how do you expect these would work on coastal black bear? Are they going to be about as effective as store-bought 170gr JSPs, or should he just spend the outrageous money from a scalper on gunbroker to buy the ammo he needs? He's a VERY experienced hunter, and a good shot. I'm not a hunter at all, so I don't know about these things.