Railing a Buckmark

I'd like to get info from all of you that have put a new rail/red dot or accu-dot? combo on their Buckmarks. I don't want any fuss after every ten shots so if one brand was/is better than others, it's ease of sight adjustment, "loctited" if needed, so on. Groups to say 50-60 feet from your experience would also be helpful. I'm looking to put together a nice coyote pistol and for targeting for my own fun, not competition. Thanks for any help and all your time! tigguy