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Rifles, Reloading, Optics, Equipment
Reloading
Supreme 780
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<blockquote data-quote="Fscott1520" data-source="post: 1810180" data-attributes="member: 108453"><p>well i read somewhere that winchester loaded all their ammo with just a couple of types of powder and the magnums were all loaded with supreme 780. however i don't know how old that info was when i read it. i do know they still list is on their reloading data. i bought a box of 150 gr extreme point just to sight in the new gun then i pulled the bullets from the others and weighed the charges and it was 81.0 +/- .1 or .2 gr for the other 15 rounds. i cut that to 74 gr and loaded up some 178 eldx at .015, .03, and .05 off the lands just to see what length would be best for my tc pro hunter. well velocity was 3050 fps and the largest group was just over .5" and the other 2 had tight tight clovers. my re 25 and imr7828 won't come under 1.5" so far. hence why i started looking for the supreme 780. but if it isn't available i will just have to find something else. i have some re 23 but haven't loaded it yet. i try to save it for my 7 stw. i dont see anything from winchester on the burn rate charts that is close to the 780 which also leads me to believe it is what they are using still.</p></blockquote><p></p>
[QUOTE="Fscott1520, post: 1810180, member: 108453"] well i read somewhere that winchester loaded all their ammo with just a couple of types of powder and the magnums were all loaded with supreme 780. however i don't know how old that info was when i read it. i do know they still list is on their reloading data. i bought a box of 150 gr extreme point just to sight in the new gun then i pulled the bullets from the others and weighed the charges and it was 81.0 +/- .1 or .2 gr for the other 15 rounds. i cut that to 74 gr and loaded up some 178 eldx at .015, .03, and .05 off the lands just to see what length would be best for my tc pro hunter. well velocity was 3050 fps and the largest group was just over .5" and the other 2 had tight tight clovers. my re 25 and imr7828 won't come under 1.5" so far. hence why i started looking for the supreme 780. but if it isn't available i will just have to find something else. i have some re 23 but haven't loaded it yet. i try to save it for my 7 stw. i dont see anything from winchester on the burn rate charts that is close to the 780 which also leads me to believe it is what they are using still. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Supreme 780
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