257 cal 10 twist SS #4 28".670 at 26" continued taper
257 cal 10 twist SS #3 28".630 at 24" continued taper
257 cal 10 twist SS #5 29".700 at 26" continued taper
257 cal 10 twist SS Rem Varmint 29" .830 at 26" continued taper
257 cal 7.5 twist SS #3 28".630 at 24" continued taper
257 cal 7.5 twist SS #4 28".670 @ 26" continued taper
257 cal 7.5 twist SS #5 29".700 at 26" continued taper
257 cal 7.5 twist SS Rem Varmint 29" .830 at 26" continued taper
257 cal 7.5 twist SS Heavy Varmint 29" .900 at 28" continued taper
257 cal 7.5 twist SS 1.250 straight cylinder 29"