Would forum members who own a S&W Model 686 (I want a 6") users comment on how accurate their guns are with 180 grain 357 mag. bullets(deer load) and 148 grain 38 wadcutters (rabbit load). The posts I have been reading say the 686 shoots better with the lighter (125 grain) magnums. Do these guns shoot the 180 grainers with real good accuracy or would the Ruger SP100 be a better choice for the heavy bullets. I am not concerned that the Smith won't take it just that I want the best gun for shooting the heavier bullets. What are the rates of twist for the 2 different guns. Also can you shoot 38's out of the Ruger or is it just 357 mags.