Thread: Typical cold/clean bore effect?

I have noticed that with clean bore the first shot is away from the main group, this is not unusual. So I generally just swab out the barrel with some kroil and only very rarely give it a full clean with copper cutter etc.

I had a 243 that put the first bullet from a cold bore (but not clean) well away from the main group usually about 2", I no longer own that rifle.