Hello Kennedy,
I have had quite a few doubles and to be perfectly honest with you the H&H I had was a real "DOG"! it was a 465 Dominion grade that was cased and I purchased it from the original owner's wife. If you fired the left trigger first, both barrels would fire! What a pleasant surprise. It was terribly inaccurate and I hated the beast. On the other hand my Rigby 470 and Westley 476 would shoot right and left barrel touching at 60 yards and never gave me any problems. I would not own another Holland if they paid me! I spent over two thousand dollars trying to fix the problems and nothing seemed to work. I would much prefer a continent gun over any H&H.