cold bore shot

My rifle for hunting deer I start with a clean barrel. If it checks out o.k. with about 15 shots or less I just leave that way till the end of season. Just wipe it down with oil after each use. At the end of the season I go thru the bore, and everything real good. If I go out, and end up shooting a bunch I will clean the bore good, and go back out and take a few fouling shots then again leave that way to the end of season.
 
I would first check that stock to action fit is correct, check for stock to barrel fit, then fire it again. If the same results I would adjust the sights/scope for the cold bore because that is the main shot you will use in hunting.
 
thanks for all the help guys... i re barreled the rifle today in 338-06
also loaded 5 batches of 5 all different powder weights. im gonna take it out tomorrow morning and see what she will do. if it doesn't work out ill just take the 7. shes ready to go and prints beautifully.
 
My Ruger .270 is similar.

At about 60 degrees Fahrenheit, A cold bore shot is about 2" high and 1" right, while the others drop right into my intended POI. If I let the barrel cool back to ambient temp for each shot, it's a beautiful cold bore group, so I know it's consistent.

However, temperature variations actually shift my POI. Warmer temperatures push my POI up, and slightly left. Colder temperatures push my POI down, and slightly right.
Temps below freezing cause some really erratic performance. Whether it's the laminated stock, or the metal itself, something is temperature sensitive.

I think it may be a pressure point in the fore end. I just haven't felt like messing with it, since the performance is predictable.
 
I had a Remington 270 semi auto once. Darned thing would just not stay consistent. My son (who is an excellent shooter) and I took it to the range after a couple of really screwy hunting episodes, and shot it about 20 times to get it where we wanted. That was 2 inches high at 100 yards. We got a 1.6 inch group of 3, which aint great but will do for a deer rifle. We let it cool a few minutes between each shot.

2 days later we went back to the range. The first shot I made was 6 inches high and at least that far to the left. Then my son shot it and was nearly at the same place.

For some reason, that gun woul not hold zero. I traded it for a Winchester model 70 and mounted the same scope with the same rings on that gun. It worked fine.

The effort required to find the problem was more than I was interested in putting out. A different gun that I liked would have been different.
 
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