for those of us - me - that are math challanged
what scale is a pop can mortar in relation to a real 10" mortar, i mean if the real bore is 10" and the pop can is 2.75ish and the muzzel diameter is 27.5 what would the pop can scale size be
i ordered a set of plans from AOP just waiting for the mail and am working out my scales i am thinking of 2.75 or 3.63 as my deviders for a sled length of 27.07 or 20.52" respectively - but i do not know which would be proper scale for a 2.75 in bore.