Originally Posted by Stix
I'm buying a stock rifle along the lines of a Tikka T3 hunter or CZ 550 American, These are not varmint type barrels but will they maintain a 1 moa group with 5-10 shots at 500 meters?
No way to tell.
My main concern is point of impact changing with a hot barrel, it seems CM may be a better choice?
No way to predict.
An accurate barrel is an accurate barrel, no matter if it is CM or SS so says most all good barrel makers.
I'm going to tell you my opinion regarding factory rifles based on my experience. Most are unreliable for repeated accuracy at the distance you are posting (500 meters). I'd guess that a Savage is the most accurate factory rifle available as I understand their barrels are button rifled. If you can get a Tikka or a CZ to maintain your level of expectations for accuracy with rapid fire with either SS or CM, I'd really like to be kept in the loop and read your experience.
There's just too many variables to generalize/answer your question. You may buy a rifle with a CM barrel that shoots like a dream or is a flat out lemon. Same for a SS. I've got a Hart barreled 270 and it is a #1 contour. It maintains less than MOA at 500 yards (not meters) with adequate cooling time. I don't rapid fire anything of mine.