Reloading the 277 Fury 6.8x51 SIG Hybrid Case

[A382DWDZQ]

Wanted to just start a thread on these hybrid cases.
I’m working up some of these resized to 7mm-08 for a Ruger American action. One of my challenges with identifying loads up around the 80k Psi is that most retail powders aren’t made for this, so options seem to be too bulky or very little increase in velocity for the added pressure. I’m also not going to run 80k in the Ruger, but just looking at the load dev in Quickload for that for now. The realistic loads that I’m looking at are < 70k and will give a bit more velocity than normal. CFE223 seems to be a good candidate so far. Curious to hear any other thoughts and experiences with these.

 

[wind gypsy]

There's a dude with the handle 45-70 on snipershide that has done a bunch with these in various cartridges and has mentioned that powder selection is important. I'm not sure I want to mess with it but was tempted to see if he wanted to sell 50 6.5 creed cases at a premium for me to play with in a 18" barrel to get some velocity back.