Is anybody playing with this combo? I'm thinking of trying it with the 180 tsx. No data I can find at all so I figured I'd start with H1000 loading data and go from there. Is this powder too slow? I wouldn't think so but looking for hands on input.

My personal opinion is that Retumbo is not suitable until you reach bullet weights of 200 grains.

Faster
*203 H-1000
204 AR-2217
205 MRP-2
206 S-371
207 WMR
208 N-170
*209 Retumbo
Slower

My experience with 8MM Mag has been with the high BC 220 Gr Sierra Game King. Rl 25 3006 Fps.