Check me -- Load data for Superformance powder, in 6.5 Creedmoor

[SeabeeKen]

I'm not questioning the paucity of data.

I'm questioning how Sierra could have a powder charge listed that's 3gr over what everybody else is listing, for a similar load. (A few tenths of grains I can understand, but Sierra at 47.x grains while everybody else is at 44.x grains seems odd. Am simply asking if anybody has gone as high as Sierra's 47.x grain charge, when loading this type of 6.5CM load.)

Haven't directly contacted Sierra. Wanted to hear from people's actual experiences with this powder in 6.5CM.

Why not call Sierra and ask them instead of a bunch of guys that didnt write the manual? Manufacturers have always treated me well and gave me an answer

 

[jlorenzo]

I remember being around 47gr with 120gr ELDs and it being about as hot as I would go.

Load 10 rounds, each increasing in charge by .2 or .3, shoot over chrono and check for pressure signs. This is how I always start with a new powder.