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Old 11-20-2018, 08:34 AM
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Gm54-120
Giant Nontypical
 
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Join Date: Mar 2010
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I think Lyman sells a 54cal 1-32 twist drop in barrel.
Lyman # 6030267
Get the most out of your Great Plains rifle by adding an extra barrel. If you own a Great Plains Rifle, with a Classic 1 in 60" twist you can acquire an optional “Hunter” Barrel (1 in 32") twist to shoot todays modern conical and sabot bullets
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