Commercially loaded 505 Gibbs.
600gr Woodleigh PPSN or 600gr solid.

Raven Rocks Precision has/had some. I found ammo and brass there, they list some things on AR. Good to deal with.

Thank you MJines and K Evans with helping me find ammo. I appreciate that.
Stuart

6 Boxes of ammo left at the time of listing.

The brass is actually on sale. Factory boxes of 50 for $200 (free shipping)