.22LR cheap and effective and dosn't create a mess. Can pick up a savage .22 rifle and walmart for around $120 little maintanance
and shell are about $1 for 50 and the gun will last a long time. they sound about like a fire cracker so not increadably loud either.
and shell are about $1 for 50 and the gun will last a long time. they sound about like a fire cracker so not increadably loud either.