E Arthur Brown fast twist barrel

RTH1800

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  • Sep 16, 2009
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    Anyone try one of the Brown fast twist (9") barrels for the 10/22? It is supposed to be set up for the Aguila 60 grain SSS cartridge.

    Thanks,

    RTH
     
    I had one several years ago. The accuracy was poor with the 60s 1.5-2” at 50 yds. I thought it was likely the ammo not the barrel. I have heard of people having O.K. results from marlin micro groove barrels, but never tried it myself
     
    Thanks! Any idea on twist rate.
    like you I’m not looking for accuracy in the Eley class. I’m looking for stability and penetration. I have 20k rounds and a lot of varmints to dispatch.
     
    I tested 9, 10, 11, 14, 15 and 16 twist rimfire barrels for accuracy about 15 years ago. Part of the test included 60g Aguila SSS ammunition. You do not need fast twists for it and accuracy suffered with the fast twist. As the twist increased so did the group size.

    Lead bullets are shorter that jacketed and stability is based on length more so than weight so you do not need a fast twist for the SSS rounds.

    I have shot a lot of the 60g SSS and they are generally stable in 15 twist barrels. 16 twist they tend to tumble.

    T/C Contender 22lr, Standard and match, barrels are 15 twist and so do Marlin 2000 models. Early Marlin 880SQ used 2000 bull barrels with cutouts for dovetails and screw holes for front sights.
     
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