H380 in a 250-300 Savage - any experience?

cloverleaf

Handloader
Sep 10, 2006
4,545
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Well- afetr doing a bunch of looking and then sme research on the Hogdon web site standing an the store I came home w/ a poud of H380. Will be looking to load some 100 Gr BT's. as listed in the Nosler reloading data. as well Also see loads for the 87 Gr and 75 Gr in the Hornady load data. All of which I use in my 250's. IS temp sensitivity a big issue with this powder? I think there are a couple folks on here who have used H380, if I remember correctly? Insights/ thoughts ? Thanks CL
 
You got me curious...
SAAMI's specs for the 250 Savage is 45,000 CUP, which is 50,318 psi.
QuickLoad suggests that max in a 22" barrel (sorry, I do not recall your rifle's barrel length) with the 100 gr BT, would be 35.7 gr of H380, producing 2848 fps and 1800 ft lbs of energy.
Although on another site, it shows that the SAAMI pressure limit for the Savage Model 99 action was reduced to 47,000 psi. (Which is interesting, as this action was also chambered in the 284 Win and the SAAMI max pressure was set for 56,000 psi. I know that I have read articles in the past that gave the max design pressure for the Savage Model 99 and Winchester Model 88 rifles, but could not find it this morning in my search...and I am still looking.)
QL shows max load as 34.9 gr of H380 for 47K psi, producing 2781 fps and 1718 ft lbs of energy.

And H380 is not an Extreme powder so will be temp sensitive.
 
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