Study found shootings committed with large-caliber firearms are much more likely to result in a fatality than those with a smaller caliber. Authors say replacing large- and medium-caliber guns with small-caliber guns would've reduced gun homicides by 39.5% in Boston during the study period.

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Study found shootings committed with large-caliber firearms are much more likely to result in a fatality than those with a smaller caliber. Authors say replacing large- and medium-caliber guns with small-caliber guns would've reduced gun homicides by 39.5% in Boston during the study period.