Rutland lad Posted March 16, 2015 Report Share Posted March 16, 2015 Gentlemen - I seem to recall reading somewhere that most rounds should have a least two rotations in the barrel before exiting. Is this a general rule of thumb ? Or did I read it in relation to my own Barnes TSX (180grain) in .30 cal ?I know this would mean a barrel with a 1/12 twist rate would have to be 24" long, and many people shoot shorter barrelled weapons, as I do with my current 1/10 twist rate Steyr, which is just under 20" and is accurate enough for me.I'm sure that I've seen this written down, as it apparently aids the round to stabilise. Or is that ratio the optimum ?Am I dreaming this, or have I confused it with something else ?Your thoughts would be appreciated. Link to comment Share on other sites More sharing options...
hunter686 Posted March 30, 2015 Report Share Posted March 30, 2015 It all depends on the bullet weight you are trying to stabilised. I think as far as a "uniform ration" goes sounds like a bit of an old wife's tale IMHO. Iv never heard of it! Hunter686 Link to comment Share on other sites More sharing options...
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