Did some pressure testing in my barrel. 29" 1-10 Bartlein, Melonited, 300 SMK.
H1000
92gr = 2755fps
96.5gr = 2873fps (heavy bolt lift, ejector marks)
Retumbo
94gr = 2751fps
103gr = 2980fps (HBL, EM)
H50BMG - huge kernels! started compressing powder @ 104gr
98gr = 2559fps
113gr = 2934fps (slight EM, very compressed, case fill a hair below NS junction)
Would like to try N570 & US 869. anyone have experience with their temp sensitivity? is it good or bad?