Not sure exactly what type of verbiage is used in the Bill, But Yes. .22LR is Handgun Ammo as is 30-30, .308, 45-70 and many others. Since Thompson Center Chambers many different normally thought to be Rifle calibers in Pistol Barrels.
Good thing my son doesn't live in CA as he ended up with his GreatGrandFather's Win 1894 30-30.