HSM Brass Features This HSM once-fired .223 Rem brass arrives deprimed and reamed to remove the military crimp saving reloaders a preparation step that would otherwise require a separate reaming tool before priming pockets can be used. Full length sizing brings each case back to proper dimensions for reliable chambering across a range of .223 Rem firearms while trimming to 1.75 inches within a tight plus or minus 0.003 inch tolerance ensures consistent case length across the entire batch. For reloaders who want brass ready to prime rather than starting from raw unprocessed range pickup this level of prep saves real time on the bench. Because this brass is once-fired rather than new reloaders get a more economical option for building their own ammunition without sacrificing the consistency that comes from HSM s processing standards. Buying in a 100 count pack gives handloaders enough volume to prep a full reloading session without needing to reorder mid-batch. For reloaders looking for prepped consistently trimmed .223 Rem brass ready for the next step in their process this HSM Brass option is available for sale at GrabAGun. HSM Once Fired Brass Specifications Brand: HSM Caliber: .223 Rem Condition: Once Fired Primed: No Quantity Per Pack: 100 Trim Length: 1.75 +/- .003 Processing: Deprimed Reamed Full Length Sized Available At: GrabAGun