I think it will work out fine in all of those cartridges that you mentioned. I've had good results with it in 22 creedmoor, 300 Norma mag & the most impressive results I have had with 147 elds in 6.5 creedmoor. You may or may not have to use a long drop tube funnel to get it settled into a 6.5x55 case.I am planning on trying it in my 25-06,280,270 and my 6.5x55. Wondering what others have tried it in and the results they got.
In my 257 AI it was amazing. Shot 1 egg shaped hole at 100 with Barnes 100 gr TSX at 3325 fps and no sign of pressure. ES was 11 and SD 7.7 using labradar @ 85* that day. A very dense powder yielding high speeds and low pressures much like Reloder 16. Should work well in your 06 base rounds.I am planning on trying it in my 25-06,280,270 and my 6.5x55. Wondering what others have tried it in and the results they got.