@Breingan both me and a mate use Rel 23 from short rem mags to good effect. Another mate has just done a load for his rem mag after following trend and using Retumbo (aka 2225) has got 2950 fps from his 20” barrel. There are others that would be worth trying too like Rel 26 but those are just what we are using. I’m yet to have an issue sourcing Rel powder and funnily enough certain adi powders are in short supply atm.
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