I've had both the Buckmark and the 22/45 and sold the Buckmark not too long ago. They shot about the same along the lines of accuracy. Off of a rest, there was really no difference at all.
The 22/45 is a jumbled mess to clean. You have to pull sh*t out, hold this, flip it upside down, push this in, flip it over and listen for a clink, flip it back over, push this into place, beat it against the wife’s cat to set the pin, flip it back upside down, pull the trigger, listen for another clink, flip it back over, and pray that you beat the cat hard enough.
The Buckmark (at least mine anyway) wouldn’t shoot a full clip without jamming. I’ve heard countless positive comments about the Buckmark but I hated it along the lines of reliability. All of my guns get broken down and cleaned after shooting so it wasn’t that. I tried supersonic, subsonic, and match ammo of all kinds. Couldn’t keep it from jamming.
I’ve not heard from anyone having these issues with the Buckmark so maybe I just got a dud spring loaded in mine. I dunno.
I hope I shall possess firmness and virtue enough to maintain what I consider the most enviable of all titles, the character of an honest man.