Purpose--potential deer hunting handgun, but more likely a woods walker or hunting backup (post rifle / shotgun kill). I have found two used Redhawks, one in each barrel length. Of course the 7.5 will have greater velocity (I'm not that interested in velocity) and a longer sight radius and all that. But, it requires a bandolier or equivalent holster and would be less totable for general hiking (not hunting). For the 300 grain 44 magnum heavy loads (somewhat over 1100 fps) I'm thinking that the 5.5 inch velocity loss would bring things down to subsonic speeds (again, this is what I want). 5.5 looks like it was rode hard and not cleaned much. Face of forcing cone is marred and may even be dinged around the beveled perimeter. 7.5 has express gold bead front V rear sights which are reportedly easier to use on game than the partridge style. 5.5 has Packymars only, while 7.5 has original wood. Both would require new Hogue grips, so that don't matter, except I can use the wood grips now and the Packymars are not pointing the revo right for me. 5.5 is $50 less. Hmmm. I'm thinking the 7.5 might be the right one. What say you?