Yes they are. For all the Lee bashing that goes on (here and elsewhere), this is one of their products that even the staunchest Lee-hater would have trouble faulting. For one thing, it's dead simple. I used them before I bought the serious stuff, you know, Lyman bullet luberisizer (and base heater), the various dies and top punches, sticks of lube, etc. Which I am all rid of now. I probably should've just stuck with an assortment of Lee push-through dies in the first place. I think what made me go to a Lubrisizer was to take full advantage of a true lube groove on the bullet. Now coated bullets may make that assessment outdated.
One thing about the "serious stuff," all those little dies and punches can drive you to the poorhouse.
The Lee push-through sizing kits aren't just for cast bullets. My greatest success story with them was sizing jacketed .338's down to .330 for use in 8x56R Austrian. I juiced the bullets up with case pad lube, ran them through in one pass, worked like a charm every time. In those days, .338's often could be had cheaply due to their presence in mark-down or close-out bins at stores and gun shops. Not all that many people shoot .338, and when they do, not many shots.
When down-sizing the .338's, I noticed about .001 spring back. With those old Austrian bores, .329 to .330 was close enough.
Ended up w 57 lbs.
