Finally got some time this afternoon between showers.
I think this is either the 1st or 2nd gun I ever built loooong time back.
Half stock 12 guage - 29 1/2" bbl - no choke - percussion, sorta French/English trade gun cross - not real attractive
Made near everything, Lock, Stock, furniture, all except the bbl. but I did breech it, mill the rear 1/4 octagon and turn a wedding band on it. It can bite your cheek, best shot head up and back. Gun weighs just over 5 lbs.
Load was 2 1/2 drams elephant 1Fg (trying to burn it up), 1/8" O P Card no lube, 1 1/8 oz. No. 6 Shot then thin O S card.
Tried different aim points and found just low of center got the most hits for me.
Best 25 yard target was 61 hits and pretty even. Started raining so I called it a day. Later I would like to try some shot cups and see if it helps get more hits.
BTW - I tried one load substituting a 1/4" cushion wad for the OP wad - Blew the pattern and on the way to look at the target I found the wad smouldering. Probably should have lubed it with crisco or something. Could easily started a fire had it not been damp today.
Anyway, it was a good excuse to get out an old gun I don't shoot much