Kirby Ive never shot a set-up like you descrided but the first Contender I had I put a .22 LR Match Carbine barrel on it. With a fixed 6 power weaver scope, factory forend and stock, shooting from a sandbag rest and supporting the stock with just my hand, I consistently got 5 shot groups that were 3/8" or less with Federal Gold Medal Match ammo at 50 yards. I know theres a far cry of difference between a carbine and the rig you described but I see no reason why your rig couldnt do the same given good shooting techniques and the right ammo. I have a new Contender now, with a .22 LR Match barrel. Im waiting on a stock and scope for it but using that carbine barrels open sights and a pistol grip over a sandbag, and the same Federal ammo, Im getting 3/8" groups at 25 yards. Not very far I know...but considering the set up thats not too bad. Cant wait until I get the stock and scope on it and set up at 50 yards.