I use Retumbo with the 175 ELDX. Only 2974 fps but it’s sooooo accurate and doesn’t hit the 1800 fps threshold until 1000 yards at that velocity. I actually validated this bullet out to 1070 yards in a long range class I had last year. It’s a freight train that didn’t get bucked much by the wind.Do you send the 175g eld-x much faster than 3-3100pfs? At 72 grains of imr7828 i saw 3010fps at sea level, 3.66 coal and saw a slight ejector mark at 72.5 grains with no added velocity.
Just one thing to note. You really have to pay attention to the recommended twist rate with Hammer bullets. You need an 8 twist for the 177 and 172’s.I don’t recall exactly, but it’s usually 10-15 rounds to find your load and validate it with Hammers.
I follow what the owner (Steve Davis) recommends. I use Nosler load data. Start with the starting charge weight and go up in 1 gr increments. Once I hit Nosler max load data, I increase in 0.5 gr increments going 2-3 gr above that published max load. I stop when I find pressure signs. I use a chrono the whole time. Usually a velocity node shows up somewhere within about 1.5 gr of where I hit pressure. Nodes tend to be 0.4-0.8 gr in size. So, I’ll work up in 0.2 gr increments from 1.5 gr of where I hit max to find the best load. Then validate.what is your method?