I've got a question that I have found a little info on, but not exact.

I've decided to try my hand at building a rifle using a pre-fit barrel. I have an older, pre accutrigger, Savage 111 in 30.06 with the rear flat top receiver.

I was planning on putting a 30" barrel on it, but then I started to wonder if that is not too much weight hanging off the end since I would want to free float the barrel. I started looking for info on that, and ran across someone saying that some barrel makers do in fact say that lengths over 26" are too heavy for the receiver?

I cannot find very much more info other than that, so I thought you all could help me out. I am wanting to go with a 308, and something in the neighborhood of Varmint or MTU contour.

Thanks