Hello Bill,
All double rifles are regulated to group their bullets together at a specific range, usually at a distance under 100 yards. Assuming you are using the same load (Bullet weight and Powder Charge). Double rifles have barrels that diverge and once the bullets are past their regulated distance the left hand barrel will pattern further to the right as the range increases and the right barrel will shoot to the left. Irrespective of what the sights say.
I'd suggest you contact the manufacturer to ascertain the actual loading used and the regulated distance to get both barrels to shoot together.
Harry
Last edited by Harry Eales; 08/26/11 11:16 AM.
