Perhaps someone with wisdom can help me:
I have read about the need to ensure there is not an air space between load and projectile so that it is not treated as a bore obstruction. But I have a couple of questions:
1) In a beer can mortar, the base of most cans is concave so are they loaded top first to reduce space?
2) In a mortar with a powder chamber, does using a reduced load leave a space too big to be safe?
3) What is the safest way to load a foil wrapper of powder into the powder chamber - especially in designs that have a significant step between bore and chamber?
4) I met a group of mortar / cannon instructors at a gun show on the weekend and their advice was to not use a powder chamber at all - their preferred design was an almost flat-bottomed bore, with nipple, cap and FFFg powder (I thought this was a little fine?) for a beer can mortar. Comments?
Thank You
