Talking points:
1) It's already illegal to have a loaded long gun anywhere but in very select places, so this law only affects guns in homes, places of business, shooting ranges and hunting grounds. With the exception of while hunting, it's completely legal to have as many guns as we want in these places. This bill would create an ecosystem where individuals could legally have a dozen guns in their home with 10 round magazines in each, but not a single gun with a 12 round magazine. Is that what this bill is trying to incentivize?
2) This bill incentivizes people to have a gun with 10 more powerful rounds that are more prone to overpenetration, rather than more less powerful rounds. I would rather my neighbor shoot twenty 5.7x28 rounds in self-defense than ten 10mm rounds. People in well-populated areas should be encouraged to use smaller rounds for self-defense, not larger ones.
3) Some firearms use the same magazines for different calibers. One can have a 300 WSM rifle with a 7-round magazine, but that magazine could be used to hold 20 rounds if used in a 308 rifle. This bill would in practice limit some common larger-caliber firearms, which are largely specialized for hunting purposes, to well under 10 rounds.
4) There is no clear guidance on what "readily restored" means. This has been the case with pistol magazines for 30 years, and this bill would add thousands of rifle magazines to the same grey area. We would all be compelled to modify magazines and we'd have no real way of knowing whether our modifications were "readily restored" or not until we were prosecuted.
5) Magazines are not serialized and infrastructure does not exist to register or control their acquisition. Nothing prevents a nefarious individual from getting 11+ round magazines shipped to them from the mainland.
6) Where is the situation where somebody would have a 11+ round magazine without also having a gun or ammunition? What is the point of adding "11+ round magazine possession" charges to what would already be "ammunition possession" and "firearm possession" charges?
7) Cases of defensive gun use involving over 10 rounds being fired are rare but not unheard of.
8: Law enforcement routinely carry magazines with capacities over 10 rounds. How does that demonstrate a legal and plausible use case?
9) One's right to self-defense does not stop applying simply because they are attacked by a mob of a certain size. It is important for communities to be able to provide credible armed deterrence against domestic terrorists or paramilitary groups, such as the KKK, Brownshirts, or whatever this generation's analog of those groups will be.