I pour and load my own Lee 1 ounce drive key slugs. Shoot them from my slug barrel on my 835 Mossberg. Great accuracy, can shoot 3" groups at 100 yards.
Now on the other hand, the Lyman slugs for some reason don't shoot worth a crap. I think the wad keeps throwing them off center, many keyhole. Someone here posted months ago about loading them with buffer material, but that results in higher pressures. Found it easier to sell the mould and stick with the Lee.
The drive key design really holds the slugs into the wads for positive rotation down the rifled barrels for great accuracy! They don't get swallowed up the cavity like the Lyman slugs.
Bob
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