+3 Lee 300 Win Mag Case Length Gauge & Shell Holder 90142 C $14.99 Lee 300 WIN Mag Case Length Gauge is a precise, easy way to trim to length and square the case mouth. Used with the Cutter and Lock Stud or Zip Trim In stock Quantity: 1 Add to Bag Product Details UPC: 734307901424 Brand: Lee Precision Save this product for later Favorite