I had tried a whole gaggle of powders in the old 303 with the Barnes 190s previously and not been particularly satisfied with the results. Runnings recently bought out a local farm store chain, and has been resupplying. LVR was among the powders they stocked on the shelves the other day.
I figured I'd pick up a pound and give it a whirl just for giggles, since I've loaded it to great effect in 30-30 for a friend of mine. Well... color me impressed. Picked up 140fps over any other powder I'd used with the 190s, and shot better groups to boot 😱
1968fps... the absolute fastest group I'd gotten before was 1826, and my best shooting group was doing 1664, and not this good.
I also tried it with a couple other bullets and got considerable velocity gains vs other loads I'd cooked up. 130gr Speer FN, 2234fps vs 2050 before.
It didn't shoot as well as A4064 with 110gr Sierras, but it was 100fps faster.
As a whole, I'm pretty dang pleased with how it turned out. I'll be stocking up on it next time I'm in town.