450 Bushmaster Full Length Sizing Die By Reddingbr> Product Overview now offers the 450 Bushmaster Full Length Die. The 450 Bushmaster full length die for bottleneck cases contains one complete die. The full length resizing die contains a decapping rod assembly with a neck expander size button. The 450 Bushmaster die expander button opens the case mouth a small amount to allow for the easy seating of flat base bullets. Specification and Features: Single Die Box Full Sizing Die Decapping Sizing Die Neck Expander Button *Please note* All defective returns must be made through Redding directly. You can visit their website by Clicking Here or call them at (607) 753-3331.