I have had a couple of rimfires that threw the first cold shot I too tried every fix out there but to no avail, I finally just gave up and sent them down the road. I will not tolerate a rifle that throws the first shot, if they do not deliver to the same point of impact, hot or cold, first shot or last shot then they are gone. Life is too short to tolerate a rifle like that. After spendin lots of time, ammo, etc on them I have become convinced that it is a barrel issue and they just never get better.
drover
drover