I just found this forum - really interesting. I own a .22 magnum ultra rifle, and it is a real tack driver. Using CCI Maxi-Mags it will put three rounds in one ragged hole at 50 yards. I couldn't be happier. I am considering purchasing a Topper Deluxe and having a muzzleloader barrel installed, but I wondered if anyone knows if H&R will install a walnut forend when fitting a muzzleloader barrel to a Deluxe?