Powder lot change / velocity change IMR 4064
Pappabear and I Shot some 178 ELDs out of his 16 inch LMT MWS today. I spun up 50 rounds of ammo in MEN brass with 2 different lots of 4064. Ammo was loaded on the Chargemaster on the same day, same everything... except for the powder lots.
We had the last half pound of an 8 lb jug that had a Vicks Vapor rub smell to it.... I mean STRONG. I'd loaded a bunch of 4064 before, but this 8 smelled odd. In any case.. the Vicks powder shot 98 fps FASTER than the newer lot of 4064.
We had seen a 60+/- change in velocity with Varget before... and I did a thread on that, but this was crazy. Almost 100 fps difference.
The hot stuff has a 2015 production code, and the milder powder is 2016 date coded.
"What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v
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