I've been shooting a 6.5 WSM for about 3 weeks now. I only have about 250 rounds through it so I can't say much about barrel wear. I know that my throat hasn't advanced at all (last measurement was about 100 rounds ago). I've heard that the barrel will shoot out in 400 rounds and also move .001" per shot. I think these claims are made by people without first hand experience. I've shot it, I've measured it, I LOVE IT! I used the rifle to win our provincial F class championship. I only used it to shoot the 900 and 1000 yard stages, favoring my .260 for 3,5 and 600. I haven't shot for raw groups at long distance but based on my plotters from the match the round is effective. I am sure that it saved me a couple of times on a wind switch that I missed allowing me to hang in the V bull when I should have been blown out. At the present time I am shooting 65 gr. of H1000 with a moly coated 139 Lapua .010" into the lands, Fed 210M. I get 3175 FPS out of a 30" barrel. I know I could get it going quicker but the pressure is low and SD's are under 10 fps. Let me know your experiences if you go this route, I will post an update as I gather data.
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[ 08-01-2002: Message edited by: Steve Altstadt ]