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Barrel wear(heavy vs. light)...follow-up?
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 Posted: Wed Mar 14th, 2007 12:12 AM
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Force_Recon_Marine
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Hey khtrent, We are all friends here so good conversation is always acceptable. :thumbs:



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 Posted: Wed Mar 14th, 2007 01:59 AM
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ghrit
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And we ARE on the third page --



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 Posted: Wed Mar 14th, 2007 03:13 AM
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wyo300rum
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Damm. What do we do now ?  Force ? Anybody ?  :confused:  I know I have about 5 rifles and 3 pistols to clean...  later

Last edited on Wed Mar 14th, 2007 03:15 AM by wyo300rum



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 Posted: Wed Mar 14th, 2007 03:18 AM
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barebackpat
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As long as your cleaning i have a few that could probably use it :poke: If your willing i'll buy the beer.



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 Posted: Wed Mar 14th, 2007 03:21 AM
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wyo300rum
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I'll take you up on that. Mines empty. Be right over. :bsflag:I wish I could though !



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 Posted: Wed Mar 14th, 2007 03:24 AM
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barebackpat
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Some day we have to hoist a cold one:beer: Might have to get Force in on it too.



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 Posted: Wed Mar 14th, 2007 03:30 AM
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wyo300rum
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Maybe we all can meet in Nov. ? He will be in Graybull and me in Cody. He can drive to Cody and I'll drive us to Billings ? I''l be there the first week of Nov. Would be cool.



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 Posted: Wed Mar 14th, 2007 03:32 AM
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barebackpat
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Maybe Just let me know could be fun.:thumbs:



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 Posted: Wed Mar 14th, 2007 11:24 AM
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sdb777
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What was the topic?

 

Scott (left turn) B



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 Posted: Wed Mar 14th, 2007 03:44 PM
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wyo300rum
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Remember what Force said....it's his thread.... I have to get used to using pm's more. I just get rolling and forget. I think it was barrel wear. All my barrels are fine so later. I'm going to do a thread on best bet for a new barrel. Have a Mod. 70 in .243 that I want to put a new barrel on and thinkin of a different caliber of couse. But need to decide on barrel maker. I'll do a new thread , don't worry !:bow:



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 Posted: Wed Mar 14th, 2007 04:48 PM
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Big John
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There is actually a way to test this theory, buy to brand new guns 1 in 220 swift the other in 30-06 load each of them with their lightest bullet and maximum loads with the slowest burning powders for each, fire 1,000 rounds throat both non-stop then clean both and take them to be air gaged and measure the muzzle for erosion the one with the biggest change is the answer to the question.



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 Posted: Wed Mar 14th, 2007 04:50 PM
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wyo300rum
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anybody want to volunteer ? Hey Big John, where you been ?



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 Posted: Wed Mar 14th, 2007 05:19 PM
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Big John
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Wyo it is spring man I have been working on the HONEYDUE LIST!!!! LOL....



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 Posted: Wed Mar 14th, 2007 05:46 PM
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wyo300rum
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I hear ya. Don't wear yourself out ! I weighed that other box of Barnes MRX bullets the other day, all 20... They varied from 179.2 to 180.8. About the same as the other box. Did have 6 right at 180.0 though. FYI. I'll save those for one more test and maybe try on on a deer or elk this year. See how they work on game. I'm sure well.  Take care and don't work too hard !                                  Don



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 Posted: Thu Mar 15th, 2007 12:51 AM
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Force_Recon_Marine
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Big John wrote: There is actually a way to test this theory, buy to brand new guns 1 in 220 swift the other in 30-06 load each of them with their lightest bullet and maximum loads with the slowest burning powders for each, fire 1,000 rounds throat both non-stop then clean both and take them to be air gaged and measure the muzzle for erosion the one with the biggest change is the answer to the question.

Sounds like a good idea for a new article. But wouldnt you need to do one with a fast burning powder and a heavier bullet?



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 Posted: Thu Mar 15th, 2007 12:48 PM
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Force_Recon_Marine wrote: Big John wrote: There is actually a way to test this theory, buy to brand new guns 1 in 220 swift the other in 30-06 load each of them with their lightest bullet and maximum loads with the slowest burning powders for each, fire 1,000 rounds throat both non-stop then clean both and take them to be air gaged and measure the muzzle for erosion the one with the biggest change is the answer to the question.

Sounds like a good idea for a new article. But wouldnt you need to do one with a fast burning powder and a heavier bullet?

If the comparison was within the same caliber then, it would be necessary to shoot all weights of bullet and all powder loads for each but the comparison is (to me at least) the difference between the calibers and barrel wear. So to find out which caliber wears out barrels faster one would have to shoot the bullets at the same rate of speed with the powders that will push them that fast. Once that is don't then you could buy new barrels and go the other way IE shoot the heaviest bullets at the slowest velocity, run 1000 rounds thru non-stop and gage them. While this test may be long it may also NOT BURN OUT the barrels, the reason for NEW is so there is no barrel wear already in the barrel ( to get around this) you could air gage used barrels and check that number against the result at the end of the test.



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 Posted: Fri Mar 16th, 2007 12:19 AM
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sdb777
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Big John wrote: Force_Recon_Marine wrote: Big John wrote: There is actually a way to test this theory, buy to brand new guns 1 in 220 swift the other in 30-06 load each of them with their lightest bullet and maximum loads with the slowest burning powders for each, fire 1,000 rounds throat both non-stop then clean both and take them to be air gaged and measure the muzzle for erosion the one with the biggest change is the answer to the question.

Sounds like a good idea for a new article. But wouldnt you need to do one with a fast burning powder and a heavier bullet?

If the comparison was within the same caliber then, it would be necessary to shoot all weights of bullet and all powder loads for each but the comparison is (to me at least) the difference between the calibers and barrel wear. So to find out which caliber wears out barrels faster one would have to shoot the bullets at the same rate of speed with the powders that will push them that fast. Once that is don't then you could buy new barrels and go the other way IE shoot the heaviest bullets at the slowest velocity, run 1000 rounds thru non-stop and gage them. While this test may be long it may also NOT BURN OUT the barrels, the reason for NEW is so there is no barrel wear already in the barrel ( to get around this) you could air gage used barrels and check that number against the result at the end of the test.


This test would definitely be performed with something that only took two powders and less then three bullet weights.  Because, I don't think we could afford the bullets, powder. primer, cases, barrels(future table legs), and the time off work to do the testing.

Good idea though....

 

 

Scott (wife gave me a dirty look) B



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 Posted: Fri Mar 16th, 2007 12:51 AM
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I have read, and I believe that very little wear is from the passage of the bullet down the bore. The vast majority of wear is from powder burning and unburned passing through the bore at pressures up to 65,000 PSI.

High power shooters shoot a lot of both types of ammo. Light bullets with fast powder for short raange and heavy bullets with slow powder for long range. I believe the consensus among highpower shooters is that heavy bullets with large charges of slow powder creates the most wear.

The average High Power shooter probably shoot more rounds in a year than the average hunter shoots in a lifetime. I replace at least 1 barrel every 2 years after 10,000 rounds.

I keep a barrel log and I also keep track of barrel wear with a Stoney Point OAL gauge. The wear after shooting heavy bullets with slow powder is measureable. Much more so than the same number of rounds with the light bullets.



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 Posted: Fri Mar 16th, 2007 04:41 AM
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OK so if I stay with the 90 gr. and the faster 4831 my BBL will last longer.  I hold you to that. :lol::lol::lol:  just kidding



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 Posted: Fri Mar 16th, 2007 12:52 PM
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72coupe
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camotruck wrote: OK so if I stay with the 90 gr. and the faster 4831 my BBL will last longer.  I hold you to that. :lol::lol::lol:  just kidding
4831 is one of the slow powders I was talking about.



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