30 caliber 245 grain Berger - New Rifle Build

I seriously doubt getting 3100 at safe pressures out of a 26" pipe with a 245. I'm getting 2950 out of the 230's.
I am getting 3068fps from a 28" with the 230s in my .300RUM. Right on the verge of overpressure. But for a hunting round....dang. I use Retumbo. I am wondering if RL33 would get the extra speed for the 245s. Like the 28 Nosler uses to make 3200 with the 195s.
 
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