Breaking in a new 22lr factory barrel for my CZ 455 Varmint.
Link to break-in thread, borescope pics
https://www.rimfirecentral.com/forum....php?t=1211851
Might as well use up some of the bulk cartridges.
Winchester 36 grain cphp rated 1280 fps
CZ 455 Varmint, factory barrel, heavy bags
Not anywhere near the best ammo I've seen.
Too many defects visible to expect a tight group at 200 yards.
Holding the scope settings for 50 yards, aim point was the white bullseye.
Impact about 54 inches lower
Not as bad as CCI Copper...
Over 100 fps ES, ten inches of spread.
Expect 3.3 inches at 100 yards, 1.1 inch at 50 yards, 0.35 at 25 yards.
Short range hunting and plinking cartridges