If you're reloading I'd suggest a reloading manual to get your loads - Sierra, Speer, Lyman etc. (Maybe also move this to the handloading section.)
http://www.midwayusa.com/product/946...loading-manual
If you're looking for hard hitting loaded ammunition Buffalo Bore has developed quite a following and they sell several .45 Colt loads.
https://www.buffalobore.com/