IMR 800x - Not a game changer, but another option

Reloading info for the 5.7x28mm

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DoubleJ
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Posts: 400
Joined: 10 May 2011, 20:20

IMR 800x - Not a game changer, but another option

Post by DoubleJ » 09 Mar 2015, 15:08

Ran some of these yesterday, ~50 degrees, ~5000ft, FsN, EA barrel

5.7x28 800x 1x brass, CCI400, 32gr super secret bullets, 1.580"
5.6gr, Av 2254, ES 38 - slight primer flattening
5.7gr, Av 2290, ES 59 - slight primer flattening
5.8gr, Av 2326, ES 53 - slight primer flattening
5.9gr, Av 2368, Es 51 - too much primer flattening

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