from the old forum:
More 3006 traces: 4895, 3031, primer falls out.
This is the usual 180 gr. loverin in the 30-06. Today I tried faster stick powders hoping to make the secondary spike go away.
50.3 gr. H4895, 2.790" COL, 0.314" HTWW, Rooster HVR, Fed #210. My Quickload prediction was 2624 fps at 53 ksi, it was actually 2789 fps and 75 ksi. The second shot "let the smoke out", the bolt had to be hammered open, and the primer fell out of the case. Oooops Needless to say, that was the end of that test.
Same load except 49.0 IMR 3031. Quickload had predicted 2661 fps at 53 ksi, it actually was 2777 fps at 73 ksi. Oooops Bolt lift was normal. Primers were slightly flat but not out of the ordinary. The cases do show a faint ejector mark, but I wouldn't have noticed it had not Pressure Trace alerted me to a high pressure condition.
If time allows, I'll double check my Quickload calculations, and post pictures of the cases, and measure case head expansion. In the meantime, we can say that 3031 reduced the secondary spike (compared to Big Game or 4350) but did not eliminate it. I didn't bother measuring groups today, but based on my experiences with these powders in the 7-30 waters, I now doubt that 4895 or 3031 would give decent accuracy with full throttle cast bullet loads.