Had occasion to stop by a Walmart today and found some marbles...clear glass, 9/16" was the only size they had...wanted 1/2" (.500) to use them in a .54cal smoothbore but will have to order those I guess.
Diameters averaged in the range of .560"-.580".
Sorted out everything over .572 (about 10%) and their average weight is in the range of 57-63grns.
When I get a chance I'm going to see what they'll do in the .58cal...see if they'll give any accuracy at all and if so to what distance...at less than a penny apiece it will be a hoot if they're actually accurate enough to shoot coke cans, etc, at modest ranges
Diameters averaged in the range of .560"-.580".
Sorted out everything over .572 (about 10%) and their average weight is in the range of 57-63grns.
When I get a chance I'm going to see what they'll do in the .58cal...see if they'll give any accuracy at all and if so to what distance...at less than a penny apiece it will be a hoot if they're actually accurate enough to shoot coke cans, etc, at modest ranges