Sinclair 22 Calibre (.223") TiN Coated Expander Mandrel Bullet Brand Style_Edge TLR The Nosler Partition is still

The Nosler Partition is still the benchmark by which all modern bullets are measured

Cast iron frame to maintain precision alignment

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The QC Ultramount Riser is 9-5/8" tall

Sinclair 22 Calibre (.223") TiN Coated Expander Mandrel Bullet Brand Style_Edge TLR The Nosler Partition is stillThe Sinclair TiN Expander Mandrels are a great option for those who want increased resistance to abrasion over Stainless Steel Mandrels, but don't want to feel the need to upgrade to our Carbide Mandrels. The Titanium Nitride coating process adds increased lubricity and abrasion resistance over the standard steel mandrels. Expander mandrels are made to 0. 001" under bullet diameter. Originally designed to be used to expand the necks of brass prior to