Both are good rounds, I own Ruger SA's (BH, SBH and Vaquero's) in .44 Mag and .45 Colt. Shoot .44 Special mostly in the .44mag SBH, but carry hot and heavy 44 mag loads in it for hunting. The 45 colt is a classic. You can load it up just as hot as a 44 mag for hunting as well (in the large frame Rugers only). I don't own any of the smaller frame Ruger SA's, I prefer the larger frame models so I can stretch their legs so to speak. In fact two of my 45's are 5 shot conversions. Just my personal preference but I like the 45 colt best. Its good that you plan on reloading, makes the 45 colt more reasonable from a cost perspecitve as both loaded factory ammo and components are more expensive than 44 mag. Tough to chose btwn two such proven clalibers. You won't make a bad choice regardless which one you chose.
