25 cal 7.5 twist SS #5 sporter 27"
4 groove

25 cal 7.5 twist SS #4 sporter 27"
4 groove

25 cal 7.5 twist SS 1.250" straight 29"
4 groove

25 cal 7.5 twist SS #17 Heavy Varmint 29"
4 groove

25 cal 7.5 twist SS Remington Varmint 29"
4 groove, .830" @ 28"