Bill

There is a lot of load data out there for the 5.6 X 57 RWS cartridge which is much the same as the 224TTH> Hornady lists this cartridge in their reload book.

I shoot an improved version (ala Gibbs) of the above case in both a repeater and single shot. Both are short action and though I do not shoot an 80 grain bullet ( 60gr Partition) I think it should fit fine in both guns.

http://www.handloadersbench.com/forum5/6749.html

Neal