I couldn't get Retumbo or H4831 but I did get some IMR4350. All they had was an 8 lb jug. I have not used IMR 4350. I will be loading 243 win 243 WSSM and 270 WSM. How do you like IMR4350?
My go to powder for 30-06 and 243. Good luck. My 243 has a chamber issue but a 6mm Rem is on the way. I think I loaded 4350 for it back in the 70's. Will find out.
my family used IMR4350 for all our .243s with 40 gr behind a 100gr bullet. Works on everything from groundhog to whitetail. Only load we ever loaded for it.
I am using up my IMR4350 because my RCBS Uniflo does not like it.
I am now using H4350--works good in the Uniflo--I was able to get some the other day by trading 40 smith cartridges
I use both in Savage Edge 243
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