madang55 wrote:CZ457 currently 22LR. Do I need a PTA to buy and fit a 17HMR barrel?
I ended up buying 2 additional barrels(.22LR & .22WMR) for my CZ455 in the 3 years after I bought the rifle in .17HMR.
Dont recall needing to do PTA's for each extra barrel, but the dealer had the extra barrels added to my rifle as 'Major Parts'.
Rifle was purchased in QLD and is registered in QLD, if thats relevant.
Be aware that when cleaning the .17HMR barrel, it's VERY easy to get a bore-snake stuck in it, which took a LOT of stuffing around to extract.
Of the 3 barrels I've had for the 455, the .22WMR gets the most work; The CCI VNT ammo seems to give me good results.