4064 eats barrels.

AA2700 with a 50g Nosler ballistic tip, rem brass, 91/2 primer, 43.0-44.5g of AA2700 is dead nuts 4000 fps and standard deviation is less than 10 fps.

How did I learn about swifts and 4064, two savage 112 J's and Two Ruger Varmint, also learnes a swift lesson on 4064 in a custom 22/250.

I still use 4064 with the 80g in a 243 as a coyote load at 3400 fps, but never in a swift again or a 22/250.

Also, win 760 and H414 are kissing cousins to the AA2700 and work very well. I use Fed 210 primers with all three of these powders.

Most guns will like 44.0-44.5g of AA2700 with the 50g, and 1/4" groups may be large for three shot groups.