Thx 9.3, I'll go with option 1, sight it in of one barrel for a 3 shot group but will also let you know how far the other barrel is away from the first group. Should be interesting, I'll use some sand bag rests and try as be as accurate as my mediocre shooting allows. I am still going to contact Wolfgang Romey tommorow (his wife says he is back tommorow) to see if he can help. Ammo can be posted to my door within EU but not from UK ??, best and thx, Mike