The Firearms Forum - Gun Community - View Single Post - H4350 vs h4350 EXT... Different data /powder?

BobMcG · 11-02-2012, 10:14 PM

Personally, I'd begin with the Sierra starting load and work up.

The Sierra manual max is actually @ 54.1gr of H4350; they were using Federal cases and Fed 210 primers for 2,880fps out of a 26" Savage barrel.
I don't know what Hodgdon used for cases and primers or what kind/length barrel they used to get 2,938fps. Maybe they'll tell you.
It's a little interesting to note that for the Sierra bullet they expressed pressure in the older CUP and the Hornady bullet in PSI. Sierra doesn't state pressures.

There's also a similar difference when comparing the same Sierra bullet but using IMR-4350. Sierra's max is 56.0gr while Hodgdon's is a compressed load of 60.0gr.

11-02-2012, 10:14 PM	#3
BobMcG Advanced Senior Member Join Date: Nov 2005 Location: Somewhere in the Twilight Zone. Contributor Posts: 1,119	Re: H4350 vs h4350 EXT... Different data /powder? Personally, I'd begin with the Sierra starting load and work up. The Sierra manual max is actually @ 54.1gr of H4350; they were using Federal cases and Fed 210 primers for 2,880fps out of a 26" Savage barrel. I don't know what Hodgdon used for cases and primers or what kind/length barrel they used to get 2,938fps. Maybe they'll tell you. It's a little interesting to note that for the Sierra bullet they expressed pressure in the older CUP and the Hornady bullet in PSI. Sierra doesn't state pressures. There's also a similar difference when comparing the same Sierra bullet but using IMR-4350. Sierra's max is 56.0gr while Hodgdon's is a compressed load of 60.0gr.