Joe (Darby)...
I had my gunsmith give my CZ453's trigger guard a high polish, both inside and outside the trigger guard, then re-blue it in a glossy blue... it worked out beautifully... and cost me a mere $15.
I also had the action bedded and the action screws pillar-bedded & insured the barrel was still "floating" at the same time... and it shoots pretty good.
As you'll probably remember, I bought the "varmint" model of the CZ453 with the heavy barrel and the single-set trigger.
Now it shoots Wolf Match/Target ammo into a � inch or less sometimes (5-shot groups @ 50 yds.) and the cheapest CCI Blazer solid point, H.V. .22 rimfire, long rifle ammo into less than a � inch all the time and into about 1/3rd of an inch sometimes.
I am also separating the rounds according to weight (in 1/10th of a grain increments) and rim thickness (within 1/1000ths of an inch) to further enhance the ammo's accuracy.
I've got that single set trigger down to mere "ounces" now...
Strength & Honor...
Ron T.