We started development with Retumbo and 154 interbonds.
at 70.0 grains the chrono said 3005 if I recall Correctly. 70.4 read around 3050 and 70.8 read over 3100 but had a sticky bolt so we settled on 70.4 being my max.
If the chrono was correct, I hit 3050FPS with 70.4 grains of Retumbo, 154 interbonds with Win Nickel and Win Mag Primers. That was out of my Rem 700 with a 26" factory tube.
I was expecting a faster round myself, that being said, maybe the chrono was off or maybe Retumbo isn't the best with 150's/154's. We will find out soon when we go to the range and see what happens. I honestly expect better vel out of my 7 mag. That being said, I see us trying Win Supreme 780 and Ramshot Magnum in the future.
Kique
