Worlds Finest Trimmer – Trimming Rifle Brass for Reloading An overview of the Worlds Finest Trimmer, used for trimming rifle brass for reloading. Share this gun video:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)