I had the priviledge to see one in action last weekend at Lodi Wisconsin BGRC match.champered in 500x3" nitro.I didn't have the chance to shoot the rifle but judging the recoil the owner suffered I'm glad I didnt.After the event I had a good look at the rifle and the owner did a fantastic job on putting together a double rifle on a double shotgun.About the only thing I could suggest is that the stock was made from a heavier wood or a recoil device was fitted within the stock.

I got lucky in that event with a score of 84/100 using a 450/400 x3". to edge out the 500 CZ. taking nothing away from the owner who took away a good number of prizes on the day.
The owner built the gun himself and from the other guns he used on the day is a very competent gunsmith.

good shooting
sbs470