The Lyman MSR Die Set is specifically designed for reloaders looking to fine-tune loads for their AR-style modern sporting rifle. The dies are loaded with MSR-specific features, ensuring that MSR-owning handloaders can tailor their handmade rounds for their semi-automatic, magazine-fed rifle systems. The Lyman MSR Die Set ships with an included Small Base Sizing Die, which works to resize MSR cartridges to a slightly smaller than standard size in order to promote smooth, trouble-free feeding from the magazine into the chamber. The dies also feature a specially- designed Taper Crimp Die that gives cases an extra-strong crimp in order to preserve overall cartridge length when feeding f Mfg: Lyman
