My new Browning PRO Trap, has an issue that makes me shoot the top barrel first. The top barrel shoots about 90/10 and the bottom barrel shoots about 50/50 or 60/40. So I have to shoot the top barrel on the raising target (first one), and then the bottom barrel because the targets have leveled off or are dropping. I tried it the other way and could never hit a 2nd target. My old O/U had fixed chokes and I shot the bottom and then the top but both barrels shot about the same spot.