I have been contemplating setting something up but most subsonic ammo does not seem like a very good option unless hunting under 50 yds. Seems like the best choice is either 450 bushmaster or 45/70 but still limited to 100yds or less which is the majority of my shots anyway. Looks like 45/70- gets a slight nod but there is a much larger list of options for 450 bushmaster and ammo is slightly cheaper. I already have a 45/70 but would need to be threaded which I won't do. Its a ruger #3.