Re: Freebore and COL
I have loaded for a couple of them in the past, and really never paid much attention to the listed OAL. Generally I used what ever OAL would function from the magazine, and went from there. These were factory rifles. Some loads worked out great just being able to fit, some I seated in deeper. Since you really cannot hit the lands on them with funtionable rounds, unless it is custom chambered, your really at the extent when you use this method. THey still have nodes like any other rifle, only your generally limited by this length.
In two 300's, I can honestly say that .010" made almost a 1" difference in groups at 100yds. So to complete your answer, yes it can effect it to some degree.
Mike / Tx
"Heck why would I lie, most folks don't believe the truth when I tell them"