Wanting to build a mid range semi auto to be used for varmints out to 600 yards. Crows, Prairie Dogs, Coyotes. Have two cartridges in mind. Either the 223 Rem or the 6mm ARC. what would you guys build if this was the main use for your semi auto varmint gun? dont care about 22 nosler, 224 valk, none of those. just asking about these two options.
223 Rem
Pros: pretty easy to find brass, alot of good temp stable powder options, wide variety of bullets available.
Cons: less energy then the ARC, more wind drift.
6mm ARC
Pros: more energy for them pesky coyotes, better ballistics, wide range of bullets to choose from.
Cons: CANT find brass Anywhere, 6.5 grendel brass is hard to find as well, you could convert grendel brass if you find it but have to trim alot, mags seem to be hit or miss. some of the best powders for the ARC are really sensitive to temp like LEVEREVOLUTION and CFE 223
223 Rem
Pros: pretty easy to find brass, alot of good temp stable powder options, wide variety of bullets available.
Cons: less energy then the ARC, more wind drift.
6mm ARC
Pros: more energy for them pesky coyotes, better ballistics, wide range of bullets to choose from.
Cons: CANT find brass Anywhere, 6.5 grendel brass is hard to find as well, you could convert grendel brass if you find it but have to trim alot, mags seem to be hit or miss. some of the best powders for the ARC are really sensitive to temp like LEVEREVOLUTION and CFE 223