6.5 Grendel powder n bullet?

[Dr. Mac]

Want to do some reloading for Grendel AR with 20in barrel would like to use a hunting bullet for hogs mainly. What's good powder to try? And bullet suggestion. I have rl19, h4350, ramshot biggame ,imr4350,varget, ramshot exterminator. I heard some have had success with exterminator. Not opposed to buying something else if can find it.

The 123 SST with 28.3gr of TAC in my 20" AR is a sledgehammer on WT deer inside of 100 yds. Better still in the Howa mini bolt action. Very accurate too. Haven't tried it on 300lb SC hogs. The 6.5 Creedmoor takes care of them.