[ithacaartist]

Stinger in silver case and copper plated HP 32 gr. bullet 1640 fps v. Remington Target in brass, 40 gr.LRN 1150 fps. OAL 1.182 and 1.186. respectively. The shape of the end of the slug makes the Stinger look longer, and maybe foreshortening in the pic.

The case is what's longer, but since the round's O.D. is constant overall, as mentioned, this would not require chamber mod. They are labeled 22lr and chamber just fine.

You're right, the rod sticking out the back when the sear is set is funky. It would indicate that it's cocked, but not indicate whether there is a round in the chamber.

Without the adapter sleeve my liner would fit a barrel around 7" long, stopping short of being OK for an Arty barrel.