Can anyone help me find loads for 75-80 grain bullets in a .224 TTH?

I have shot the 224TTH for about 8 years. I use if for groundhogs/coyotes/deer. The load I use is 47gr reloader 19 in winchester cases with WLR primers. I shoot this load with both 69gr sierra MK and 70gr barnes Xbullets. The 69gr MK load shoots in the upper 3500FPS and the 70gr X shoots in the mid 3700fps.

The newer hornady reloading guide has info on the 22/6mm which is also the 224TTH.

thanks
224TTH