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Barrel questions

ruger891022
Hello everyone, I have a few questions regarding barrels, mine particular being a 6mm remington. My question is, is it possible that my gun could my gun actually shoot better with a fouled barrel? Before i cleaned it, it shot well, I shot it after i cleaned it and the groups opened up a little bit. My second question is, when do you know when you have your gun clean enough, the bore is very shiny like a mirror and the patches come out with very light if any fowling, is this ok? My third question is, how do you know what weight bullet to shoot out of your barrel, is there an equation or do you have to do trial and error method?

10/22 stainless carbine
Custom O3-A3
savage 24
stevens 67h
NEF Pardner 12 ga.
winchester x-150 .50
winchester 88 .308
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2 comments

Date Votes
  • OleDuk
    r89, it's pretty much trial and error in regard to bullet weight.It is true that there is an optimum twist rate for a given bullet weight, but in the 6mm Rem.you have bullet choices from 70 to 105 grains if memory serves me correctly. When the 6mm Rem. came out in 1950 something as the .244, the Remington barrels had a 1 in 12 twist rate which was fine for 70 to 90 grain 6mm bullets. It was not so good for any bullets over 90 gr. In the current Rem. 6mm barrels the twist rate is 1 in 9(as I remember it) to better handle the heavier, longer, bullets. If you intend to use heavy bullets for deer critters you're in fine shape; but if you want to use it on varmints an 80 grain bullet might be best. But you'll have to try 'em to see.
    It's not unusual for a clean bore to shoot different from a fouled one, that's why match shooters will fire a couple of fouling shots at the start of a match.
    I don't think you'll ever push a patch thru a barrel and see it come out as clean as when it went in.
    Cheers,
    OleDuk[:)][:)]

    "Disperse you Rebels; Damn you,throw down your arms and disperse!"
    British Major John Pitcairn, April 19, 1775. He fell at Bunker Hill two months later.
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  • MIKE WISKEY
    oleduke has it right, i've got .22 target rifles that don't start grouping 'til after 100 or so rds after cleaning. each barrel is different as to how often it should be cleaned. if your a group shooter clean after every match, praire dogs after 500 rds., deer once a decade.
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