Accurately measure the brass size adjustment to improve safety.
Improve the accuracy of bottleneck measure.
How to determine the proper bushing diameter: Add the neck diameter and shoulder diameter and divide that number by 2, use the bushing that is closest to that number.
Product description: How to determine the proper bushing diameter: Add the neck diameter and shoulder diameter and divide that number by 2, use the bushing that is closest to that number.
Gauge Body with 5 Bushing Set Replacement for A330,C375,D400,B350,E420 Compatible with Checking Most Bottlenecks. silver,red
