The following is what I've found to cycle well and shoot accurately in my Roth-Steyr pistol's. The bullet is a 100g 8mm Lebel Total Metal Jacket .330" diameter. These are offered by Graff and Son's. I resized these bullets down to .324" diameter. My load data... 8mm Roth-Steyr Red Dot @ 3.3g Graf & Son's Lebel 100g Tmj bullet (resized bullets down to .324" diameter) WSP primer Fiocchi 8mm Roth-Steyr brass COAL=1.08" Measured Velocity 1090 FPS Shoots consistent .5" to .75" 3 shot groups at 35 feet.