Here's some info. I loaded 1 each of each charge weight and shot them over the chrono. This is not a chart for any recommended load, this is just my observations on this specific powder/case/primer/bullet combination in my gun. Gun - Wby Mark V, boltface to muzzle 25.5" not incl. PK brake Brass - Virgin Norma mfg.(and headstamp) Primer - Federal 210 Powder - Hodgen H-1000 Bullet - Wildcat 130 grain ULD H.P. Flat RBBT Cartridge Overall Length - 3.250" (there's a LOT of bullet in the brass!) Ambient temps in the high 70's Chronograph was set with center of screens @ 10' from muzzle. H-1000 Powder 66.0g – 2814 fps 67.0g – 2920 fps 68.0g – 3037 fps 69.0g – 3060 fps 70.0g – 3124 fps 71.0g – 3184 fps 72.0g – 3230 fps 73.0g – 3275 fps 74.0g – 3305 fps 75.0g – 3320 fps 75.5g – 3350 fps 76.0g – 3390 fps 76.5g – 3428 fps slight drag on bolt when opening, slight drag mark on base of shell. Testing stopped with this load. No further loads were fired, slight burr on primer around firing pin @ 75.5g and higher, but no worse than factory loaded ammo with 117 gr. bullet. No bullets were fired for any sort of group, I was just testing for velocity and pressure signs.