I found a beautiful old Sako L61R Magnum Finnbear, made in 1962, chambered in .300 H&H Mag, and before you ask, yes, I've verified that it is all factory original and hasn't been rechambered. I'm going to use it this coming season on elk and mule deer.

I'm loading 180gr Swift Sciroccos and 200gr Nosler AB's and Swift A-Frames. I'm wanting to use temperature insensitive powders such as H4350, H4831, H1000, Retumbo, MagPro, Magnum, Hunter, some of the new IMR Enduron powders like maybe IMR-7977, or maybe RL-23, 25, or 26.

Unfortunately, I can't find any up-to-date loading data for the .300 H&H Mag for most of these powders with the bullets I'm going to use.

Do any of y'all have any loading data for any of these powders for 180gr or 200gr bullets in the .300 H&H?

Thanks in advance! Best Regards,

Tim

Last edited by Skeezix; 07/15/16.
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