I've been tinkering with handgun hunting while on leave/ R&R. As of now, it's just been small game hunting. Started out with a Ruger Single Six Hunter and eventually made my way to a S&W Model 63. I started with a scope and ended up shooting irons more successfully. I want to get a big game handgun when I get back. What do you guys use? Model? Caliber? Barrel length? Optics? Thanks!