Beretta 1301 Competition User Manual - Page 11
Steelium Technology, Optima-bore, Drop And Cast Spacers - choke tubes
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Steelium Technology Steelium is the production technology of the Beretta barrels that transforms the special tri-alloy steel into an exceptional barrel, also due to manufacturing process that is just as unique. Thanks to the deep drilling, cold hammer forging and to the special vacuum distension, the steel acquires the ideal characteristics to offer the best ballistic performance available today. Optima-Bore®HP The special Optima-Bore® HP geometry is conceived to offer the best performance, even with High Performance steel shot. The shot pattern remains perfect and uniform, complemented by the use of the Optimachoke® HP choke tubes. DROP AND CAST SPACERS EN Between the stock and the receiver is a technopolymer spacer and inside the stock is a stainless steel plate that can be used to change the drop and cast of the stock by simply modifying the assembly configuration. A set of additional spacers is also provided to further change the drop by replacing the spacer pair. 11