Cold bore poi
- Thread starter trauma1
- Start date
All depends on load and barrel. I see virtually no deviation from cb to the rest in my 26" Bartlein 6.5x47L shooting 140 Hybrids and Varget with SD of 4.5 over 30 shots..
Some rifles do it, some don't, sometimes a brake or a can will magnify it. But 1" is out of the ordinary, and too much, more like your mechanics. Try running a jag with a small amount of bore conditioner or Kroil down the barrel after a shooting session before storage and see what happens.
It come down to cleaning, I no longer have any POI shift with a clean bore. Check out Frank's videos on bore cleaning. You may be over cleaning. Or it could be "cold shooter" and anticipating firing the first round of the day.
My Remington 700 in .30-06 is zeroed at 300 yards. At that distance, the first shot out of a cold, clean bore is 5-1/2 inches low.
Also, if it is that predictable, 1" high every time, at some point it becomes a non issue, for now it is known. But even a dry jag and patch may clear a lot of it up.
My last and current Shilen 260 barrels have basically no cold bore shift.
A known and repetitive shift is easily accommodated for.
A known and repetitive shift is easily accommodated for.
Out of any rifle I have seen over the years, 1" or less it pretty standard for rifles that have a shift. As long as it is consistent and you can "map" it then you can dial or hold no matter what the distance of your cold bore.
