Johnn Peterson
CGN Ultra frequent flyer
- Location
- Chemainus B.C.
Now in 303Br. I'm shooting a Jungle Carbine but in the various 303's I've had, there are three powders that have given me good results, IMR 4064, Imr 4320 and IMR 4350. This is using primarily three jacketed bullets, the Hornady 174gr, Sierra 180gr and Woodleigh 215gr. Cast bullets and the powders required is another chapter. From Ken Waters Pet Loads in his tests with the cartridge he states, "On this premise then, my choice of a single all-round powder for the .303 would be IMR 4064 on the basis that it has given the best combination of accuracy and velocity". Each rifle may have it's own preference but the experiences of and info gained by people like Waters would be a good starting point if nothing else.
