Chipster Posted August 19, 2003 Share Posted August 19, 2003 I have a SV 40 cal (Schuemann barrel) that I have about 50k rounds through it. During practice this weekend two or three round out of 200 showed sights of tumbling on the paper targets. My friend said his 45 started doing this, put a new barrel in it and it stop tumbling. I examined the barrel. I found the land and groves are barely visible two thirds of the way down . I have another newer Schuemann barrel and the groves are very visible all the way to the camber area. I thought I would be able to shot more round then this through a barrel. Is it time for a new barrel? Thanks Chip Link to comment Share on other sites More sharing options...
benny hill Posted August 19, 2003 Share Posted August 19, 2003 yes Link to comment Share on other sites More sharing options...
ErikW Posted August 19, 2003 Share Posted August 19, 2003 That sucks. What bullet and powder did you use? Link to comment Share on other sites More sharing options...
bgary Posted August 19, 2003 Share Posted August 19, 2003 Same question, different symptoms The Ultimatch barrel in my Open gun has about 30k rounds through it. I have noticed, lately: -- the empties coming out the side are "sooty" (burned residue on the sides of the cases) -- I consistently chrono about 3 PF lower than I did this time last year, with the same load -- when I shoot groups, they've opened up some - not a lot, but enough to notice My load is 8.3gr of N350 under a Montana Gold 115grain bullet, in a SuperComp case Is it time for a new barrel? If so, what wore out, and how do I keep it from doing that? Bruce Link to comment Share on other sites More sharing options...
Julien Boit Posted August 19, 2003 Share Posted August 19, 2003 That's strange your barrels wear so fast, I know SV french distributor's pistol is 130 000 Rounds old with still the same frame/slide/barrel without any significant loss of accuracy. Link to comment Share on other sites More sharing options...
Skywalker Posted August 19, 2003 Share Posted August 19, 2003 I too would consider this a little too fast wear for a barrel, but my experience only relates to shooting lead in .40" and .45", I use copper plated bullets for match only. If you shot 50k rounds with jacketed bullets, it might be normal. Link to comment Share on other sites More sharing options...
Hagop Posted August 19, 2003 Share Posted August 19, 2003 Chipster, I just had to change a Nowlin bull barrel in .40 S&W with major tumbling problems with both jacketed & lead bullets. This particular barrel had roughly 35,000 rounds fired through it.... unfortunately it was time for it to go. The wear was pre-mature because of my anal tendency in having the barrel spic & span after a cleaning. I used flitz polish along with JB bore cleaner and JB bore bright every single time I cleaned the barrel. This process rounded off the lands in the barrel amongst other things.... where as when new,the lands were sharp and gripped the bullet in its transition down the bore. What I am trying to say here.... it is not just the rounds fired in a particular barrel that will wear it down.... but your particular cleaning technique that can be damaging the barrel slowly over time to the point that you may be pre-maturely shortening its service life. Never, Never, put JB bore cleaner or JB bore bright down a bore for cleaning out a barrel. Use bore solvents such as Hoppe's #9 or Birchwood Casey bore scrubber. I learned my lesson the hard and expensive way. Link to comment Share on other sites More sharing options...
benny hill Posted August 19, 2003 Share Posted August 19, 2003 It is not always the amount of rds but how fast you shoot them & how hot the throat gets. The heat is what burns the throat out usually & not so much the rd. count. I. E. shooting 400/500 rds really fast in practice. Link to comment Share on other sites More sharing options...
EricW Posted August 20, 2003 Share Posted August 20, 2003 Never, Never, put JB bore cleaner or JB bore bright down a bore for cleaning out a barrel. Whoa there! Using that stuff every time is an extreme example. We all know the abrasive paste erodes metal, but sometimes it's a necessity for getting lead or gook out. I've rescued cherished rifles with it. When I get a new handgun, I tend to use the JB paste just as a quick way of getting the toolmarks out of the barrel, so gunk doesn't build up so badly. Then I never clean the barrel again and just keep the chamber clean. Cleaning your bore after every shooting session is a waste of time, IMHO. (I used to do it religiously, then I excommunicated myself. ) There is a middle ground in how we use tools. Link to comment Share on other sites More sharing options...
TDean Posted August 20, 2003 Share Posted August 20, 2003 Are any of the above mentioned pre-mature wearing barrels of the AET variety? Link to comment Share on other sites More sharing options...
Hagop Posted August 20, 2003 Share Posted August 20, 2003 EricW, That was no example I gave you.... it is the truth. I shoot lead for practice and jacketted for matches only, and can say that the barrel is difficult to get clean when it is time to clean it. So I decided to speed things along and quiken the time spent cleaning.... I elected to use JB bore cleaner along with JB bore bright thereafter to finish up every single time I had a cleaning session....that did my barrel in. You said it yourself.... it is a mild abrasive. The owner of the reputable McMillan rifles has gone to say that if you use JB bore paste in his rifles.... that he will void the warranty. As far as using it for a last resort or for saving a barrel that you feel was lost.... well.... I guess you have nothing to loose in that case? I speak and state what I say from my personal experience with this product and not heresay. Use it at your own peril.... use it for extreme cases.... and not for routine cleaning? Link to comment Share on other sites More sharing options...
Chipster Posted August 20, 2003 Author Share Posted August 20, 2003 Hi Guys Taked to Benny today, great guy and very helpful. I use 180 gr HP Zero bullets and Titegroup 4.9 gr oal 1.2. I agree with Benny. I shoot about 400 to 600 rounds in a quick practice session once or twice a week. I just burn out the barrel, but thats what I bought it for. The gun will be heading down to Benny's as soon as things slow down here in Minnesota and the snow starts to fly. (that could be next week ,just kidding) Thank for the replies Chip Link to comment Share on other sites More sharing options...
EricW Posted August 20, 2003 Share Posted August 20, 2003 Use it at your own peril.... use it for extreme cases.... and not for routine cleaning? The next time I lap in the barrel of a new gun, I'll make sure I wear my official David Tubb bomb squad suit, lest any peril my way cometh. Link to comment Share on other sites More sharing options...
Hagop Posted August 20, 2003 Share Posted August 20, 2003 EricW, Suit Yourself? Link to comment Share on other sites More sharing options...
Flexmoney Posted August 20, 2003 Share Posted August 20, 2003 apples and oranges. Next question please? Link to comment Share on other sites More sharing options...
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