Mine are to, BUT from 28" to 32" only gives you a max of 50fps. You'll find this artical intresting.https://rifleshooter.com/2014/12/308...ty-28-to-16-5/ Looking at the figures the first couple of cuts only reduce 10fps so extrapolating upwards the 308 case does'nt really give much extra. A longer barrel though does give more longitudanal stability, less left right heart beat etc effects.
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