dorg Posted January 8, 2015 Report Share Posted January 8, 2015 I was wondering when a 7mm wsm barrel dies, does it go very quickly or gradually. do you wait for a barrel to start showing signs or would you just get a new barrel fitted. At the moment the barrel is shooting well but having had close to 1500 rounds through it I am not sure how much life is left in her. Link to comment Share on other sites More sharing options...
Ronin Posted January 8, 2015 Report Share Posted January 8, 2015 They tend to lose repeatable accuracy quite quickly when they go. Ive had three WSM barrels all used in F Class. all started showing increased verticals to begin with when they started to go with unexplained "fliers". every barrel is different, but I would be surprised to see much more than 1800 rounds (accurate rounds) from a National / World level gun chambered in 7mm WSM Link to comment Share on other sites More sharing options...
Dr.T. Posted January 9, 2015 Report Share Posted January 9, 2015 They tend to lose repeatable accuracy quite quickly when they go. Ive had three WSM barrels all used in F Class. all started showing increased verticals to begin with when they started to go with unexplained "fliers". every barrel is different, but I would be surprised to see much more than 1800 rounds (accurate rounds) from a National / World level gun chambered in 7mm WSM My WSM barrel experience has been the same as Ronin's - increased verticals (ending up at over 2 MOA vertical) followed by fliers. I also experienced EPIC fowling problems, apparently from throat erosion. I don't have reliable info on WSM barrel life - I bought a used WSM which had "seen only 100 rounds" - well, I saw about 400 good rounds before the barrel "let go". If you and Ronin are getting upwards of 1500 then I guess that tells me something about the "100 rounds"... By the way Mik at Dolphin did an excellent job on the re-barrelling and I'd thoroughly recommend him. Link to comment Share on other sites More sharing options...
Blacktornado Posted January 10, 2015 Report Share Posted January 10, 2015 My WSM barrel experience has been the same as Ronin's - increased verticals (ending up at over 2 MOA vertical) followed by fliers. I also experienced EPIC fowling problems, apparently from throat erosion. I don't have reliable info on WSM barrel life - I bought a used WSM which had "seen only 100 rounds" - well, I saw about 400 good rounds before the barrel "let go". If you and Ronin are getting upwards of 1500 then I guess that tells me something about the "100 rounds"... By the way Mik at Dolphin did an excellent job on the re-barrelling and I'd thoroughly recommend him. Link to comment Share on other sites More sharing options...
Blacktornado Posted January 10, 2015 Report Share Posted January 10, 2015 My WSM barrel experience has been the same as Ronin's - increased verticals (ending up at over 2 MOA vertical) followed by fliers. I also experienced EPIC fowling problems, apparently from throat erosion. I don't have reliable info on WSM barrel life - I bought a used WSM which had "seen only 100 rounds" - well, I saw about 400 good rounds before the barrel "let go". If you and Ronin are getting upwards of 1500 then I guess that tells me something about the "100 rounds"... By the way Mik at Dolphin did an excellent job on the re-barrelling and I'd thoroughly recommend him. My WSM barrel experience has been the same as Ronin's - increased verticals (ending up at over 2 MOA vertical) followed by fliers. I also experienced EPIC fowling problems, apparently from throat erosion. I don't have reliable info on WSM barrel life - I bought a used WSM which had "seen only 100 rounds" - well, I saw about 400 good rounds before the barrel "let go". If you and Ronin are getting upwards of 1500 then I guess that tells me something about the "100 rounds"... By the way Mik at Dolphin did an excellent job on the re-barrelling and I'd thoroughly recommend him. Worldwide known , Barrel life for a 7WSM is around 600 rounds. Link to comment Share on other sites More sharing options...
dorg Posted January 10, 2015 Author Report Share Posted January 10, 2015 Thanks for the replies, Joes rifle has had over 1400 rounds through it and shot a 75/11 in the last round of the F class league. I think 600 is abit light. Link to comment Share on other sites More sharing options...
Dr.T. Posted January 10, 2015 Report Share Posted January 10, 2015 Thanks for the replies, Joes rifle has had over 1400 rounds through it and shot a 75/11 in the last round of the F class league. I think 600 is abit light. Hi Dorg, From my understanding, I think Joe's barrel is probably more the exception than the rule for 7 WSM (I guess you do too, hence the topic of the post ?). Most people I've spoken to in the league (including Joe, I recall) seem to think 1000 rounds is a fair innings, with barrel life typically being described as "short but sweet" - but if it's still shooting well at 1400 rounds, then this can only be a good thing, and let's hope it continues! As mentioned in my earlier post, I bought my WSM pre-owned, so take my low round count as a pinch of salt. However, if I get 1400 out of my new barrel then I'l be a very happy chappy. Link to comment Share on other sites More sharing options...
Mik Mak Posted January 11, 2015 Report Share Posted January 11, 2015 I Have fitted a lot of these in 7 WSM and 7-270 WSM, incl the 2 rifles I run for the F Class Matches. Average accurate barrel life can be up to 1200 rnds, all depending on which powder you use. I use N165 and get approx 1100-1200 accurate rounds, then it drops off a clif with very little warning Hope that helps Link to comment Share on other sites More sharing options...
dorg Posted January 11, 2015 Author Report Share Posted January 11, 2015 All in all, I think a new barrel is imminent, by the way Mikmak I hope your feeling better. Link to comment Share on other sites More sharing options...
Mik Mak Posted January 11, 2015 Report Share Posted January 11, 2015 Yes thanks Simon, had an inner ear infection which affected my balance, but OK now Cheers Mik Link to comment Share on other sites More sharing options...
Laurie Posted January 11, 2015 Report Share Posted January 11, 2015 I Have fitted a lot of these in 7 WSM and 7-270 WSM, incl the 2 rifles I run for the F Class Matches. Average accurate barrel life can be up to 1200 rnds, all depending on which powder you use. I use N165 and get approx 1100-1200 accurate rounds, then it drops off a clif with very little warning Hope that helps I can't comment on the short magnums, not being a user, but Forum members should note that Viht N165 is an exceptionally cool burning powder with a low Specific Energy value - 3,500 KJ/Kg compared to ~4,000 for Re22/25; Re17/RS60/RS70; 4,050 / 4,020 for Viht N550 / 560 respectively. Even single-base 4831 / 7828 are rated higher - 3,870 for H4831 and H4831sc; 3,850 for 7828ssc. This seems to make a very significant improvement to barrel life on those cartridges that suit these slow burning powders. Several threads on the AccurateShooter forums, mostly about 6.5-284, 284 Win / Shehane and 280 Rem / 280AI suggest it is borne out in real life. The barrel life spreadsheet that's also available on AccurateShooter suggests a 750-1,000 round barrel life difference in 284 Win between H4831 and N165 both running at 60,000 psi pressures. So, knock a third off Mik's figure for the 4831s and even more for hot loads with high-energy powders in the short magnums. Link to comment Share on other sites More sharing options...
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