7mm RUM, Berger 180 gr Hybrids, RL33 question

[6x6 elk]

I see guys are using it with the 28 Nosler with good results. Can it be used with the ultra mag? And if you can what is the starting and max powder load? I have some RL 33, and wanted to give it a try as long as its safe. Thanks for your help.

 

[6x6 elk]

TTT

 

[FURMAN]

I would think RL33 would be too slow for 180s.

 

[6x6 elk]

That's what I thought too , but seems to be working well in the 28 Nosler, and 180/195 gr Bergers

 

[FURMAN]

195s yes. I don't see it being suited for 180s