studman5578
New member
I just slugged my 357 mag (by taking 3 grains of 2400 and shooting into a pile of towels, worked like a charm) and i looked at the slug only to find that the slug has an odd number of groves (there is no groove completely opposing another to make measuring anything easily done). Have any of you wiser gentlemen found a way to find the diameter in this situation? Thanks in advance!