Open on fire can be an issue, my 204 had it, but it is one of those happy problems, it means you action is a little tight, it is easy to fix, the problem is the locking pin does not have even and/or complete engagement on the shelf. Put some lipstick on the shelf carfully close the action look at the mark it should be even and about 1/8" onto the shelf. Mine was half that and uneven, all I did was lightly stone the high spot and I got full engagement.
Funny thing I go some of my best groups before I fixed the latch problem (the best of that day was a .39 for 3 @100 with plenty of groups in the .5" range I was load testing after all), Yes handi's can take some tweeking. So I guess there have been no $1000 remintons that have not gone back to the factory, and the must all shoot in the .2s since the are at least 3 x better.