Lee 405 gr HP
I have this mould and from the factory it cast undersized (ie .456 - .457 depending on the alloy). As cast, the only feasible diameter to size it to was its original size, .457, and this was a near thing at best. (I'm shooting this in a brand spanking new BC now with smokeless). I can't really say it shot groups at all, and keyholing was frequent. While trying out this bullet, I also had a Lyman mould for their 330 gr HP and, since it fell from the mould at around .458 -.459, it could be sized to .457 - .458 and shot considerably better though only at velocities up to 1600 fps. But back to the Lee, I consulted with others who shot it and was advised that the BC preferred bullets sized to .458 - .459 (I've found this to be true with a couple of GC NEI bullets that restored my faith in the BC's ability). I got advice to lap the Lee mould a bit and did so successfully insofar as the bullets now fall out at about .459 - .460. I sized these at .459 (felix lube) and am just waiting for some decent shooting weather. I have high hopes that the more desirable sizing will show up in a dramatic improvement in accuracy, or maybe just some results that can be categorized as groups and not patterns. I cannot, from my experience so far, say anything favorable about this bullet.