Hope this isn't too much info: I got to pondering all this, and realized I never thought about using the muzzleloader forend with the Bergara 26" heavy. I went and measured everything I've got.
- the Bergara barrel is .990 3/8 inch ahead of the extractor tip (front end of frame lug). It is .883 at the front of the P/H forend.
- the standard Encore magnum muzzleloader barrel is .992 and .880 measured at the same places. Not much difference.
-the PH forend I am using with the Bergara is 1.000 at the rear, and .850 flush with the end of the barrel. Then I screw it down tight, but the front does spread really easy.
-the reason for not just using the muzzleloader forend with mine is that the muzzleloader barrel has pillars and different size screws. It would be pretty easy to get it adapted, and I think some have suggested that. I just wanted to keep changeout simple with all of them.
Wallypedal