I've been spending some time working up some Hornady 165 grn Interbond's in my 300 RUM. I've got a load that's hitting 3500 fps at the end of the pipe and is holding nice groups out to 300 yards. Don't know about further out as I haven't got that far yet. The gun is a Remmington 700 stainless, non fluted barrel. My question is, for some of you guys that have had to replace a barrel or two due to high velocity, hot loads, how many rounds would you guess she'll take before she gives up her accuracy. If we're talking a couple hundred rounds, I'll probably back things off. If the thinking is it will be in the 1000's, I might just leave her be and see what kind of damage we get on deer and antelope this fall.