Originally Posted by Turbinator
I dunno about everyone else, but I always find backing off a whole 10% produces underpowered loads for me. I might back off a few grains, for example if the recipe calls for 4.3, I might start around 4.0.. not quite 10%. After all, I think we're finding that so-called "max" loads in these books aren't really max loads any more.
Same here. If I back off 10%, my Glock won't even cycle.
Op, I use 4.3gr with W231. Like what most people said, work up the load. Don't use anyone's load data.