I just had to read the "What's Your Go To Powder for..."

That is all I needed to know.. IMr 4064 or IMR 4895...

and yeah, for the 260, the original 6.5 "Creedmoor" cartridge.. with a 120 grain bullet...

yup.. 4064 or IMR 4895.... not always the fastest velocity, but not far behind , if at all..

and never a slouch in the accuracy dept...

another nifty thing about either powder... they are not scarce on the shelves at most stores that sell powder..

"Minus the killings, Washington has one of the lowest crime rates in the Country" Marion Barry, Mayor of Wash DC

“Owning guns is not a right. If it were a right, it would be in the Constitution.” ~Alexandria Ocasio Cortez