It'll work just fine. If that is what I had I'd use it in confidence, but it offers no advantages and several disadvantages over a 12 for HD. The 20's main advantage is a much lighter weight gun for carrying on long days in the field.
That is a non factor for HD. You are going to have a somewhat reduced payload and in guns of equal weight the 20 would have somewhat reduced recoil. But most 20's are considerably lighter than 12's which translates into greater recoil than 12's, not less.
Factor that in with harder to find ammo suitable for HD and the 12 is really a better choice.
That is a non factor for HD. You are going to have a somewhat reduced payload and in guns of equal weight the 20 would have somewhat reduced recoil. But most 20's are considerably lighter than 12's which translates into greater recoil than 12's, not less.
Factor that in with harder to find ammo suitable for HD and the 12 is really a better choice.