Barrel Break In???

[Brithunter]

Hi All,

I have a funny question about new barels and breaking them in. I just aquired a Baikal single shot rifle in 222 Remington, it's not new but has had hardly any use. The trigger was so rough and heavy which is why the guy got rid of it which I have worked on and it's better, not quite there yet but getting so

However it seems that these rifles have Chromed bores so how would one go about the break in of a chrome lined bore?

So far I cleaned it when I got it and have fired 11 rounds so far sighting in and testing it then it got cleaned again, cleaned up real easy the ammo was Federal 55 grn BT FMJ which gave a 0.600" 3 shot group, and Sako Gamehead 55 grn SP which gave a 0.620" 3 shot group. Distance was only 70 paces but it shows promise. I have fitted a 6x40 scope on it for now.