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    300BLK Bolt Gun Project - Looking for Barrel Advice

    Hi all, I'm looking to put together a 300BLK bolt gun and will be running a Sig SRD762 Ti Direct Thread suppressor on it. Shooting will be primarily subs, but I'd like the ability to run supers if I ever wanted to. Barrel can be between 8-8.5" and I'm really looking for advice on twist rate...