Im in the market for a good, heavy hitter revolver. I want a 4 or 6 inch barrel. Chambered in 357, 44, or 454 casull, maybe even 50 cal. I have my SA loaded 1911 in stainless steel. Due to that purchase last month im trying to keep the price below $500. I was looking at the ruger gp100, s&w 686...