RCBS MatchMaster Multi-Cartridge Reloading Block Features The RCBS MatchMaster is precision machined from solid 6061-T6 high quality billet aluminum giving it the strength and dimensional stability to hold up to years of repeated bench use. Its dual-fit design accommodates two distinct case diameters in one tray covering the .223 Remington and .308 Winchester cartridge families as well as other cartridges sharing a .384 or .470 bolt face which means one block can replace two separate single-caliber trays on a crowded bench. Each of the 50 case holes is engineered as a pass-through hole that lets spilled powder fall straight through rather than collecting in the tray making cleanup faster between loading sessions. Finished in black the block offers generous spacing between cartridges for easy handling during case prep priming and powder charging. Built with no-slip feet the MatchMaster stays firmly planted on the bench during loading or case processing instead of sliding around under repeated handling. Its stackable design lets reloaders organize multiple blocks without consuming excessive bench space helping keep a reloading area decluttered and efficient. Being proudly made in the USA from solid aluminum the block is built to last essentially a lifetime of reloading sessions without warping or cracking. For reloaders looking to streamline their workflow across two popular cartridge families the RCBS MatchMaster is a practical and durable choice available for sale at GrabAGun. RCBS MatchMaster Multi-Cartridge Reloading Block Specifications Manufacturer: RCBS Model: MatchMaster Caliber: .223 Rem / .308 Win Capacity: 50 Color: Black Material: Aluminum Available At: GrabAGun