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New lot of powder, not the same performance?

Re: New lot of powder, not the same performance?

like I just replied on my thread I have had similar results with varget and acc2520 when switching lots. that is a common complaint with Varget. with 2520 I had a volume vs weight issue. same volume but .7 grains heavier. had to add .7 grains to get the same velocity.
 
Re: New lot of powder, not the same performance?

I haven't had this experience with Varget I've only seen a variation of about 30fps max from lot to lot with it...... I have heard about others having more extreme cases though. I did have a lot of IMR 4064 that shot 90fps slower than the previous lot. The IMR 4064 still shot accurate though and so did the Varget.