Need some help on reloading for the 45 long colt. I have never loaded for this (or the 45acp) but my dad needs some ammo loaded for it. The question I have, is, I have bullets listed with a .451 diameter, I see on some info I have found, it lists for the Colt as .452...After asking a few questions at the sporting goods store, they told me what I have is fine to load in both the ACP and the Colt, but, I haven't been able to read it anywhere or verify it in any of my old reloading books, and Cabelas sells ammo actually listed for the Colt, as .452. The pistol he has is a Ruger, which, I have found on the Hogdens page, it lists different specs if you have a Ruger ot a TC. So I am a bit confused, and before I blow him or me up would like any and all info I can get, as I am a bit confused?? Btw, the bullets I have are jackets semi wad cutters 200gr.