I shoot Berger 210 vld’s with reloder 26 out of my 300wm. It’s a tack driver and shoots 3038fps when I ran it through the chronograph. Reloder 26 is a great powder but hard to get. H1000 shot well but was about 50fps slower. H1000 is less temperature sensitive apparently.
I built this 300wm after a buddy bought an R Bros rifle. Thought I would save some money. The one thing you save and maybe don’t figure in vs r bros is cost and time of load development. At the end of the day I saved about $800. It was a cool process and rifle shoots great. Happy to run...