The 3 Mile Islad Thunder Mug

[AMG2000]

My Latest Thunder mug it will have a base I call it the 3 Mile Island Mug when it goes bang you know it. It has a 7/8 bore and is 2.350 dia by 4.5" high and uses,s 250 grains not as big as my other one i made in which weighs close to 70 lbs

 

[ChrisPer]

Holy cow. That much metal needs trunnions and a motorised limber. :hatsoff: