cheapest gun to shoot

what is your cheapest gun to shoot, cost wise either by cheap priced ammo or you reload your own.

mine has to be my judge only because i can shoot the .410 round thru it and that is cheap. it would also be my most expensive if i wanted to shoot the .45 long colt.

my .22 rifle is also one but we all know that.

Air rifle/pistol in my basement. About .01 per trigger squeeze.

Since .22 is a given

I would say my 9mm or .308 since you can get surplus rounds

I recently started to shoot my S&WMP15-22 and Ruger 22/45 a lot more due to cost. [AR15]

I'd say my airsoft pistol, but after breaking things EVERY TIME I have shot it inside my house, I'd be careful to make that claim.

Potatos gun is pretty cheap. You can shoot anything Out of those

Sure, if you can afford Aquanet.

Super Soaker.

Someone elses, with their ammo.

my AR in 5.45