HS-6 and HS-7 powder

338magnut

I have heard, or read that Hodgdon powder HS-6 is the same as the old Winchester 540 and HS-7 is the same as the old Winchester 571 and that the same components and load data can be used. Is this a fact? Thanks for any info.

Eternal Sun 111666

I've also heard the same thing about H-110 and Win 296.
Wheather it is or isn't, best (safe) advice is to follow manufactures data. I realize 540 and 571 is not manufactured anymore, and you may have a "pet" load you would love to duplicate, but safety first.

dcs shooters

The burn rates are close, but I would use the Hodgdon load data.

RCrosby

I have several old manuals that list these powders . Email me from profile if you think some period data might be helpful.

338magnut

Thanks to all for the info. Will look at all suggestions.

Hawk Carse

It isn't what you hear, it is what you can get from the horse's mouth. From the Hodgdon website:
"HS-6 is identical to Winchester's discontinued 540."
"HS-7 is identical to Winchester's discontinued 571."

338magnut

TO HAWK CARSE: Appreciate the info. Am going now to look at the Hodgdon web site. Good news to me as I do have some favorite loads based on the old Winchester 540 & 571 powders. Again thanks to all for the feedback. Best Regards Terrill.