Try to shoot any hand cannon and the hammer pulls and wheel spins. No boom. Tried on gun range and in control.
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Are you using trigger stops? If so, try disabling them then check again - they also cause trouble with sparrows and boosting. Also worth checking file integrity if you're on Steam and if you're on console [url=https://help.bungie.net/hc/en-us/articles/360049199051-Clearing-the-Console-Cache]clearing cache[/url].