300 RUM: Retumbo or H1000?

[mhamlin]

Factory Rem 700 Long-Range Hunter, 300 RUM/26" bbl: H1000, lower MV, but sub-MOA out to 1000 yards, with 215 Bergers.

 

[Dgd6mm]

I have a 700 BDL ss 26",Nosler 180 BT with Retumbo. 5shot 1/2 inch at 200 yards and sub moa at 1000 yards.