Yserbius, look at my stats: there are a number of states that have relaxed gun laws and number of deaths are comparable to Europe. Looks like these are Northern rural states, maybe with older population and less urban crime areas.
Note also that the murder problem while bad is not getting worse (except maybe last 2 years due to society upheaval in general). Some of the stats may be mildly misleading – you need to look at murder rate rather than gun-murder rate: less and less people axing each other and switching to guns does not affect the crime rate!
But, again, even reasonable reform will be seen as “attack” of anti-gun to pro-gun, especially when using biased arguments. hopefully, someone can come up with measures that have both restrictions and giveaway to gun owners? could you come up with a list of things you can include that gun owners will like? say, a federal law allowing most reliable gun owners (by time of use, test results, psychological testing, military training) to have a federal license that they can use in other states? and, if it works, continue expanding this program in return for restrictions on the most dangerous groups?