So far my loads have been pretty conservative. All were with the Matrix 165g and an OAL of 3.51" and a whopping 22" long barrel in 270 Sherman!
The 7828ssc 60g load shows about 2800fps. It does show some sign that the top is near. It shot 5 into just shy of an inch(just cleaned-.993").
The RL22 loads were continuing to gain speed but the hottest one at 59.5 grains showed 2715fps and no pressure. They did all shoot good and I loaded 5 rounds from 56g to 59.5 g and they all went into a group under an inch(.753").
The N560 loads showed some promise also but were low pressure and the hottest I loaded 56g was up to 2645fps. They also shot pretty well with 3 making a small group(.693") and the fourth of 4 being about an inch out.
Magpro again was fairly low pressure and was loaded from 58-62 grains. By this time I was getting cold and either wasn't shooting as well or the rifle doesn't like magpro but it threw one out about 1 1/4", two in close and the other two above a bit and spread out(1.217")
I would have liked to have seen some more speed at this point but it is obvious I underestimated the powder charges needed. Also, this was with BR2 primers and in cold temperatures. I may try some Magnum primers with the Magpro and increase top pressure loads until I find a stopping point. Right now none of the loads are HOT yet.
It was nice to see that the rifle will shoot a wide range of powder weight to a similar point of impact. The groups stating with the lower pressure loads moved up on the target with the higher pressure loads just as they should.