You can do quite a bit of improvement to the BM trigger without too much effort.
First step, is to determine if your model has an adjustable trigger, and if it has an over-travel screw in the trigger itself.
If it is one of the target models, then it does have both.
Optional; With the slide removed, remove the entire trigger pull adjustment screw, (back of frame, above grip) by threading it all the way in and removing it from the gun. Be sure to move the dogleg of the adjustment spring first, by sliding it off to the side. This will eliminate the adjustment ability, but the range of adjustment was likely too heavy for any serious target shooting anyway.
Step two; and also optional; Dig the glue out of the over-travel screw, in the trigger, and readjust it to it's minimum, and reseal it. On all of the ones that I've worked on, there was major room for improvement beyond the factory setting. Very worth the time. The difference in felt trigger weight will be night and day.
Lastly, and the only option for those who have the versions that are not adjustable. Standard trigger job methods, of mating, polishing and slight adjustments of the hammer and sear surfaces. If you're not familiar with standard trigger work, the BM isn't the easiest gun to learn on, since full dis-assembly is kind of a bear on the Buckmarks.
With that said, I have found a cheat however.
With the slide and barrel removed, you can get to the sears engagement surface on the hammer. With careful work, it is fairly easy to reshape and polish that surface, which will be enough to get the weight & creep down, without compromising the function & safety of the gun. Using a light fine file, open the angle of the sears mating surface slightly, (just a few thousands of an inch at a time), polish with a Dremel and some Mothers aluminum polish, lubricate, and test. I use an air-hose to blow out the filings and polishing compound before testing. Repeat until satisfied.
You can check the pull without reassembling, so it's a fairly fast and easy process. But, be damned careful if you are new to this stuff. Safety is paramount. The parts you may damage are cheap, but too light of a trigger can cause a serious accident. One that can NOT be undone. This is not a job for the non-hobbyist type.
I have a Buckmark that has a very crisp trigger, at 1.25 lbs, that was done this way. It took some time to get it that good, but it was worth it. Thousands of rounds later, it has proved to be safe, and I've never had any malfunctions since the modification.
Hope this helps.