Jason,
The sight that I have is the 17AHB and it is the shortest one which is .404.
When I got it I had the Lyman sight on the gun and it would work just fine. When I put the Williams FP sight on, it would not adjust high enough so I called Williams and they sent me a new, longer, elevation adjustment screw, and it works fine. They sent it free of charge and it came in less than a week.
You know, I think that the reason us silhouette shooters are always so willing to help people beat us is because we are having a hard time getting people excited about this game. One way to get them excited is to help them have success. No one likes to go out and turn in the low score every time. If we can get people up to a competitive level in a very short time, they don't lose interest before they start getting good scores. About the time they start winning, they realize that in this sport, you are really in competition with yourself. Even the best shooters get into a slump every now and then. When they do someone else wins the match. They feel good cause they beat the best shooter in the club, but the best guy in the club is just trying to get back to shooting his regular average scores and get out of his slump.
Last week at our Thursday practice shoot, one guy who always shoots open sights, because he is a prison guard and wants to shoot like he has to at work, cleaned all ten chickens. He didn't win the match, but he was sooo happy cause that was the first time he cleaned the chickens since they moved them out to 40 meters. He doesn't care what everyone else is shooting, he is focused on what he is shooting.
Another thing that we do all the time is help each other out with a good excuse for shooting poorly. Any lame excuse is readily accepted. "It sure is hard to shoot when the wind gets below 20mph", is a good one. We blame bad ammo or a new sight or a dirty barrel. They all work. The real excuse, "I'm just a lousy shooter" is never inferred but everyone is willing to help.
Well, you asked for my advice and I got carried away. I guess you have to take my musings, along with my advice.
Sixgun