I just got this gun about a month ago, a CZ-452 "standard" wit 25" barrel and hog back beech wood stock. Out of the box the trigger was much heavier than I like but it was easy enough to replace the spring with a lighter one and it was clean and crisp, overtravel of course since that retracts the bolt stop but my trigger now breaks at 24-26 ounces.
Initially I had installed a Simmons 22Mag scope, 3-9X32 but early on I decided it deserved something better. I saw that Sportsman's Guide had a sale on the Pentax Gameseeker 4-12X40 and thought that would be just the thing. I was very disappointed in that scope so now the Simmons 3-9X32 in back on the rifle and the Pentax is on its way back to Sportsman's Guide.
I've been testing loads to see what the rifle likes best, shooting five groups of five shots each at 100 yards. I still have some loads yet to try but so far the averages are as follows;
CCI 17 grain TNT hollowpoint--1.34"
Winchester 20 gr. XTP HP ----1.23"
Federal 17 grain Vmax---------1.40"
Hornady 17 grain Vmax--------1.64"
I also ran all of those over the chronograph and found no great difference among the brands, all equaled or exceeded factory specs, some by 100 fps.
Just out of idle curiosity I also fired four loads on 1/8" mild steel plate, all penetrated the steel, making a clean hole considerably larger than bullet diameter. The 17 grain loads penetrated about 3/8" into the packed dry paper behind the steel and the 20 grain loads went close to 1 1/2" into the dry paper. The FMJ load was not noticeably different than the XTP hollow point, both broke up completely in the paper.
Here are the steel shots and one target of the accuracy test showing frustrating attempts to zero the Pentax scope, chasing groups with adjustments of inconsistant value.
