Neck Tension Gauge / Inside Neck Diameter Gauge – Precision Reloading Tool

BurstFire Neck Tension Gauge – Precision Inside Neck Diameter MeasurementThe BurstFire Neck Tension Gauge is an essential tool for any serious reloader who demands consistent, repeatable neck tension for maximum accuracy. This precision‑machined gauge measures the inside neck diameter of your brass cases, allowing you to verify neck tension after sizing or annealing — one of the most critical factors in achieving uniform bullet seating pressure and top‑tier performance.  Consistent neck tension is directly tied to consistent velocity, improved ES/SD, and tighter groups. Whether you anneal your brass, neck‑turn, or simply want to eliminate variation, this gauge gives you fast, reliable feedback on every case. ✅ How It WorksEach BurstFire Neck Tension Gauge features 5 stepped diameters, machined in 0.001" increments, starting 0.001" below bullet diameter.Simply insert the gauge into your sized case neck:- Stops at 1st notch: ~0.001" neck tension- Stops at 2nd notch: ~0.002"- Stops at 3rd