These gages are used in conjunction the Hornady Lock-N-Load Overall Length Gage (Sold Separately). Together they assess the bullets relationship to the specific chamber. The adjustments to the seating depth of loaded round can be an aid in finding optimal accuracy.
Please contact Hornady directly with any concern about performance, manufacturing defects, or warranty issues. Their contact information is found on their web site www.hornady.com. Their main switchboard phone number is 308-382-1390 Monday thru Friday 8am to 430pm Central Time.