I feel bad for Emory and his luck in owning this rifle. It is however an interesting problem. Let's get past all of the who did what to the rifle and when and try and figure out what happened to it?

It has been suggested that perhaps monometal solids were shot through it.

Overloaded ammunition? Emory has stated that one case he pulled was 4 grains higher than the other so marked.

What expanded the Chambers and how many rounds would it take? 1, 2, many?

One poster who has some knowledge of Doubles claims he loaded some rounds for it an it shot into 2 ". Emory says 11" with one barrel shooting high. Assuming both are correct what could have happened to the rifle to change POI?

On another vein, what causes a Double to lose it's correct regulation?