Harkom, I have not used the powder measure yet. I am going to reload 45-70 and 45-90 for my Springfield Trapdoor rifles. I have two springfield Long Range Rifles from 1879 in 45-90 from the Capt Litchfield group used at the Creedmoor matches and I want to be accurate on my loads and testing out different bullets. I am using goex ffg powder. I do believe accuracy on the measure will depend on the grain size powder and will adjust accordingly. I Hope this answers your question. Thank you for your post. One of the rifles is showcased in a book by Richard Hosmer, both rifles are mentioned.
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