Re: barrel life how long
Simple answer to your question is yes the accuracy is very much up hunting standards even at the extended ranges with "retired" competition barrels.
Here's what Dave said about the bore/throat after he tore it apart and took a peek with the bore scope. At 1354rds the barrel was barely "checking" and looked pretty good. Granted we're only basing this "report" on one barrel as compared to many other 30's he's looked down with his bore scope, but he said it looked better after 1354rds than any 30 with comparable amount of rounds. That was encouraging.
As an FYI: I kept VERY detailed records of this barrel for every round fired, and for cleaning the only thing the barrel ever saw was Butch's Bore Shine, a little Bore-Tech Copper Solvent toward the end (long story), and JB compound to keep the throat smoothed out.
Also my 6.5-300WWH barrel right now doesn't have a measureable throat in it, it's burnt out so much. It was originally throated for 140gr MKs, but I can put a 155gr MK sitting on top of the case, chamber it, pull it back out, and it won't push the 155gr bullet back at ALL. So I don't know where the lands are in this rifle, but at our the last match of the year in Sept, I took it out to the range to have some Friday evening fun before the match on Saturday just shooting at clay birds on the dirt bank. I could throw dirt on those birds shooting 140gr bullets, but I didn't break any. If they were gallon milk jugs I would say the hit/miss ratio would be 75/25. If they were deer standing there...... the freezer would've been full!