30 Major

[Sticks]

the extra mm of bullet diameter buys you a mm margin of error to catch the line and score a bullseye, same thing goes on with archery guys use fat arrows for short range and indoor archer they are up too 0.422 inch in diameter because they dont worry about wind especially indoors the long range outdoor shooting typically uses the thinest arrows possible to fight the wind at 90M

Until they institute the "Inside Out" rule at a tournament. People put away the Lincoln Logs real quick and get out the Knitting Needles.