No 2A supporter is an "absolutist" anymore than folks who support any other right. That being said your questions imply an inherent belief that limiting rights is the natural and prudent thing to do, and people should need to explain why the rights should not be limited. The Bill of Rights is clearly meant to put the situation the other way around, where the government needs to present a clear and "beyond a reasonable doubt" reason why a right needs to be limited. Sure you could impose any of those things from background checks to magazine size limits, but think about (1)
why you're doing them, (2) how those measures could be defeated and (3) whether they're more just to burden the law abiding then actually achieve some quantifiable goal. And think about your "success criteria" in a fair minded way where you consider both the benefits AND costs - for example the TRAP laws (Targeted Restrictions on Abortion Providers) may provide some vanishing level of additional "safety" by mandating hospital admitting privileges for abortion providers, but how much do they REALLY make women safer compared to the expense and loss of access?
With the above said, I empathize with folks who have little familiarity with firearms, zero desire to own one, and wish they'd simply go away. But realize others do, and simply explaining to a bear why it shouldn't eat you isn't a substitute for a large caliber long gun to defend yourself against one while in the wilds of Alaska. Or competitive target shooters. Or any of the other countless reasons why folks own firearms that don't involve targeting
@HomerJS in a mass shooting anymore than folks can be transgender and not target
@glenn1 for sexual assault in a restroom. Or whatever else you can come up with.