auto-loading firearms for hunting. Impact On gun homicide rates and lethality A 2004 study examining the effects of the Federal Assault Weapons Ban in effect from 1994 to 2004 which included a prohibition on sales of magazines with over ten rounds. The study found that the ban was effective at reducing crimes committed with assault weapons, though less than 2% of gun murders in the U.S. are committed with assault weapons. The ban was not associated with a reduction in firearm homicides or the lethality of gun crimes in general. The authors suggest this may be due to the concurrent rise in use of non-banned semiautomatic weapons with large capacity magazines. The authors note that high-capacity magazines have a greater potential for affecting gun crime as compared to assault weapons due to the fact that high-capacity magazines are used in firearms not classified as assault weapons. The authors further note, "However, it is not clear how often the ability to fire more than 10 shots without reloading (the current magazine capacity limit) affects the outcomes of gun attacks." 95% of gun murders involve three or fewer shots fired. Overall the authors reported that "there has been no discernible reduction in the lethality and injuriousness of gun violence, based on indicators like the percentage of gun crimes resulting in death or the share of gunfire incidents resulting in injury, as we might have expected had the ban reduced crimes with both AWs and LCMs." A 2019 study found no statistically significant association between state-level LCM bans and homicide rates. A 2020 RAND Corporation review indicated that there were few methodologically rigorous studies on the impact of LCM bans on violent crime rates, and concluded that "High-capacity magazine bans have uncertain effects on firearm homicides. Evidence for the effect of high-capacity magazine bans on firearm homicides is also inconclusive." On mass shooting rates and lethality A 2019 study examined the effect of large-capacity magazine (LCM) bans on the frequency and lethality of "high-lethality mass shootings" (defined as those resulting in six or more fatalities) in the United States from 1990 to 2017. Of the 69 high-fatality mass shootings in the U.S. over that period, at least 44 (64%) involved LCMs. Attacks involving LCMs "resulted in a 62% higher mean average death toll" than mass shootings in which high-capacity magazines were not used. States which had banned high-capacity magazines had a substantially lower