Not much better than a Lyman 429241 for use in a 44 caliber gun. I have 5, 44 Magnum guns and the only one giving me problems is my Puma carbine which doesn't feed the SWC much better than 75%. I have loaded these (thousands) from mild to wild and was able to get some very accurate loads (Dan wesson 44H-2"@ 30 yards, consistently). Works quite well in 44 Special brass too...