what barrel length?
The Hdy gas gun data has H4895, TAC, and Varget, for a workup they should all get you to about 2500 max ft/s in a 20" barrel for a comparable 105 bullet.
My compiled data for powder sensitivities shows CFE to be about 1ft/s per degree.
But as an editorial comment, IMO the powder-temp studies were probably done for a common cartridge like the 308, so for that capacity size maybe the numbers are right... but, my opinion, it would be difficult to just simply go 1 for 1 down to a smaller and more efficient cartridge like the grendel, or 6 Arc. Just my 2 cents, but the sensitivity in these smaller cases, anybody's guess. Probably in a similar ratio among the powders however.
CFE has been known to spike in really hot temps, IIRC perhaps 90*+, something like that.
Edit to add: depending on what distance you're going to, might consider some of those berger 95's, currently available on ammoseek. You can get some more speed, and XBR is in there too.... for my 20" barrels they shoot about ~120-150 faster than the hdy data for a given load and pill. Just luck of the draw I guess.
The Hdy gas gun data has H4895, TAC, and Varget, for a workup they should all get you to about 2500 max ft/s in a 20" barrel for a comparable 105 bullet.
My compiled data for powder sensitivities shows CFE to be about 1ft/s per degree.
But as an editorial comment, IMO the powder-temp studies were probably done for a common cartridge like the 308, so for that capacity size maybe the numbers are right... but, my opinion, it would be difficult to just simply go 1 for 1 down to a smaller and more efficient cartridge like the grendel, or 6 Arc. Just my 2 cents, but the sensitivity in these smaller cases, anybody's guess. Probably in a similar ratio among the powders however.
CFE has been known to spike in really hot temps, IIRC perhaps 90*+, something like that.
Edit to add: depending on what distance you're going to, might consider some of those berger 95's, currently available on ammoseek. You can get some more speed, and XBR is in there too.... for my 20" barrels they shoot about ~120-150 faster than the hdy data for a given load and pill. Just luck of the draw I guess.