Does anyone know what length test barrel Alliant uses for their 223 Remington load data?
I've emailed and called their tech support but have not received any reply back after a couple of weeks.
Thanks.
I need to know the max velocity that Sierra lists for the .224 40 gr Varminter bullet in 223 Remington. The manual I have is from the 80s and doesn't list that particular bullet.
Thanks.
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