Years ago when I took the gun safety class to get the gun permission slip and privilege to own and operate firearms in MA, I remember the instructor mentioning a little cautionary tale that iin MA before you have that holy grail LTC-A you're ever at a public range and rent guns and expend ammo, before you leave, to always check to see if any shell casings fall into one of your pockets or hoodie. Legally, if you ever get jammed up and stopped and searched by a cop and he finds a 22LR shell casing on you, if the cop wanted to be a dick about it, can put you in jail for a long time. I thought the instructor was trolling till I looked it up. Just today when I brought my buddy (who's a guest and unlicensed) to my range I told the guy to wash hands and do a shakedown check and lo and behold there was a single 22LR that landed in his hoodie. Always tell your gun newbie buddies to check for casings if they weren't blessed by their local police chiefs yet. Would most cops jam you up for a 22LR shell casing? Most likely no. Do dick cops exist and there is even a minute chance you might be unlucky enough to encounter one? Yes.
From MGL - a 22LR shell casing is "ammo". General Law - Part IV, Title I, Chapter 269, Section 10
[For purposes of this section, ''ammunition'' shall mean cartridges or cartridge cases, primers (igniter), bullets or propellant powder designed for use in any firearm, rifle or shotgun.]
[shall be punished by imprisonment in the state prison for not less than two and one-half years nor more than five years, or for not less than 18 months nor more than two and one-half years in a jail or house of correction.]
Ouch.
From MGL - a 22LR shell casing is "ammo". General Law - Part IV, Title I, Chapter 269, Section 10
[For purposes of this section, ''ammunition'' shall mean cartridges or cartridge cases, primers (igniter), bullets or propellant powder designed for use in any firearm, rifle or shotgun.]
[shall be punished by imprisonment in the state prison for not less than two and one-half years nor more than five years, or for not less than 18 months nor more than two and one-half years in a jail or house of correction.]
Ouch.