I have a Navy Arms (made by Pietta) 1858 Remington New Army in stainless steel. I haven't shot it yet. I ordered a box of Hornady lead round balls that are .445 size. After ordering them, I see on forums all over the web that Pietta recommends .451, and many folks are using .454. This has me concerned. Is it OK to shoot .445 in the pistol, or should I scrap them and buy some .451 or larger? Thanks . . . .