For close range, small game, a rifled bore will do "ok" with shot. I've eaten a lot of grouse that came from the bore of a .44 magnum pistol. I've done a lot of experimenting in pistols, and I've never really seen the "donut" pattern, sounds more like conjecture, but the patterns do spread very fast. I don't believe you'll get a pattern that would be sporting or humane to the pheasent. Grouse and wabbit would be doable.
One trick I do know, to tighten patterns in a rifled bore, (or smoothbore) is to mix the shot with a thick lube, about the consistancy of tallow. Thicker in warm weather, thinner in cold weather. This is kind of a messy technique, however you do it. But I'm still thinking that pheasent will still be a bit out of the "envelope".
I'm also thinking that you would enjoy a .62" smoothbore that shared the same bore diameter as your rifle...a "companion piece", more than getting a rifle to shoot shot. Easy for me to say as I'm not buying...!!!
:curse: :haha: :curse:
Good luck.
Rat