Have you tried retumbo? I see guys saying h1000 a lot to try it, but have heard nothing about retumbo. If i could get that to work i could just buy more and load my norma mag and the slrIf you want speed try RL26. 7828 and H1000 are also good. The 1000 will help with barrel life. I shot mostly H4831 in mine and it lasted about 1900.