Quote:
Originally Posted by Univibe
AA#9 is said to be THE powder for spec 10mm loads. Works very well for me with 180 grain hardcast. There may be powders that equal its 10mm performance, but none are touted to exceed.
In 10mm, a faster powder, e.g. AA#5 or Unique, can do FBI-lite level loads well.
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It is indeed. Also my go to in 357magnum as well. Clean burning 🔥 excellent accuracy. Better get me some more, I’m running low