Home Forums Reloading Big Game Rifles Retumbo and the .243 Win

Just wondering if anyone has tried Retumbo in the 243? currently I'm thinking of trying it with the 85 gr Sierra game king. I know this powder is intended for use in large capacity cases, but I've also known it to be used in several smaller capacity cases with great performance. Kind of a chameleon powder. Anyhow, if you have tried it in a 243, I'd sure appreciate the benefit of your experience with it.

I've tried H1000 and 100gn pills in my 243 and it was way too slow. Retumbo will be worse. Better of with H4350

I wouldn't bother using it unless you're going to shoot the 105-115s. It gave me 3050ish fps with 105 AMAXes.

What Tanner said. T.S.

What's the barrel length on the 243? Might work in a longish tube.

Try superformance with the 85's.

Bb

Thanks for the suggestions, Guys!

I run a full load of IMR4831 with 85's and get great accuracy and 3200 fps out if a 23 inch tube. Really accurate in all of my .243's with tsx bullets.