Test result / posting I made back in 2003:
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2003 - .62cal MAGNUM BUCKSHOT LOADS
FYI...as a related piece of information, I ran some tests in my .62cal smoothbore to see how a number of round balls would do by themselves. I tried numbers of Hornady round balls in a paper shot cup, first .440's, then .490's, with 80grns of FFg.
I could never get acceptable size or consistent shaped patterns with the small sized .440's because of the significant offset from each other due to their stagger-stacking in the bore.
Their offset was so great that they were almost side-by-side but not quite, so that when they exited the muzzle they began veering off in various directions due to this stagger stacking.
Patterns were 18-20" wide, inconsistent, never equally distributed within that spread.
However, the larger .490's were outstanding and it was because they had far less stagger-stack, stacking much more closely to a vertical line. The results were that 3 of the .490’s would repeatedly print a 3-4" group at 30yds, and 5-6" groups at 40yds.
And there was plenty of energy...I had the target stapled to the side of a large wooden "cable reel" used by power companies. Each side of the wooden reel was constructed of 2" of hard wood separated by a few feet of air space, and the sets of .490's blew right through all 4 inches of hardwood.
Since the .490dia / 180grn balls are .50cal, there should be no problem using them for deer hunting unless a state specifically does not allow a smoothbore firearm or multiple projectiles to be used for deer hunting.