Mr Bowling 846, I found out from experience that masonry bits are not the same as bits for bowling balls. Bought a set of 3 new masonry carbide bits, 1 1/8, 1 3/16, and 1 1/4, on ebay for $30. The carbide doesn't stick as far out of the drill, ( probably for strength), which means you might get 1 sharpening on them. Also they were all just a little oversize. Drilled a 1 1/4 hole in the junk ball and the thumb slug slopped around a little. Wound up buying a green wheel for my bench grinder so I could reduce the dia. Still wound up being a good deal for me as these large size bits aren't cheap. So just be aware that there are differences between masonry carbide bits and carbide bits for drilling bowling balls.
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Moon
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So many questions, so little time but I'm having fun.