I am going to test the 150 Bergers again with 65-69 of the H1000 and 66-71 of Retumbo and see what happens this weekend. I will post the results.
Winmag, I wouldn't even consider loading 77 grains in this thing unless a book actually told me a powder type with that load. Now I might purchase quick load as an additional tool but still I would have to work up to any load.
I had a 25/06 that shot lights out with factory loads but I had a heck of a time duplicating the accuracy so I opened one of those cases and found a compressed 53 grains of extruded. In one of my manuals I found 52g of IMR something (cant remember) but it was a powder I wouldn't have thought to try. I loaded up that IMR and found 55 started showing preasure signs while 53.5 was an absolute tack driving round.
Anytime I have ever done this I typically find a powder weight close to the factory load in one of the manuals, I was just shocked by this weight.
I have been out of Retumbo but scored 8ibs of it tonight so I will excited to see what happens with it.