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I have a rem. 700 .223 boltface, built in 30-221 & it is just an awesome piece of suppressed subsonic machinery.
I had ( No ) Extraction problems at all with the Rem. as a donor action for a build.
( I DID Have ) bad Feeding problems from the Mag. box.. It would hang-up bad from the Bigfatass Sierras right in the chamber mouth area on the bolt push to chamber a round. And only way to make it 100% reliable was to shoot it. then take the empty brass and Mic. the webbing at the bass of the fired cartridge, Then take the barrel off again and do the Max amount of chamfering on the Breech/cut of the chamber mouth edge allowable for not to compromise the integrity of the Brass under pressure when fired.
Now it Feeds 100% from the .223 Rem. blind Mag. box with 240 sierra's . .. <|; ) .
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Threaded Mode