Good find! My all time favorite "rifle" handgun round! I've had three .45-70 handgun length barrels in Contender and Encore. All of them were very accurate with a variety of 300 gr JHPs over H4198. I got rid of the Contender barrels since I prefer using lighter rounds in them. It was fine to shoot in Contender I just take it easy on those frames.

Experience is the best teacher, hunger good sauce.
Osborne Russell Journal of a Trapper