Originally Posted by
Owen E Oulton
The biggest difference in D10 vs. D20 is that the D20 is a true Platonic solid and the D10 is not. The difference in rolls is a matter of physics, not statistical analysis.
That said, it must be noted that gaming dice are not made to Vegas standards, and the varying mass deficit of engraved numbers must be taken into account.
I doubt that the weights are that significant as described. Also on most d10s the distribution of 'high' and 'low' is consistant. If you do think that a d10's weight is off, though, keep in mind that the highest weight (for paint) would have the '8' on the bottom, or on the top (for etching). On all the d10s that I have, this would result in a '1' in the opposite face. This wouldn't explain the discrepancy as described, since the wrong number (a 9) is popping up - opposite of the '0'.
Sometimes, it's really just chaos at work.
On a d20, for instance, I tend to roll a much higher number of critical hits and misses than most people - so much so that I often go diceless when I serve as a GM. This is with any d20, mind you, including ones that other people are using and are not getting that result.
In a sense, I can only call this 'luck' (both good and bad), since chaos seems to work out on the extremes for me with a d20. Sometimes it really is just the way the die happen to fall.
"Thank god I'm only watching the game... controlling it!"