Anyone use this powder for 243 and/or 270 WSM? Was given 2 pounds and would like to try it. Maybe 100-105 gr in 243 and 130-140 in 270WSM.

thanks in advance for any responses,
SC

I use Reloader 19 a lot. It is my go to powder in the 7mm-08 and 7mm WSM. Check out Allient's web site for data to your specific cartridges. Bob

I have used it in .270, 30-06, 25-06. It is my prime choice for those calibers. I don't know about the .243; the case may be a bit better suited to Reloader 15. Check the Alliant Powder web site for reload data.

I'm using it in 280 Remington with satisfying results.

The burn rate falls between IMR-4350 and IMR-4831, so it should be a good fit for both.

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6/23/2022

It is similar to 4831 so I would think that it would work well in .270. I found 4831 to be the cats meow in 25-06.