Summation
Final inspection, loaded-round measurement, and process audit before ammunition leaves the bench.
Bench 7 starts with the record. Across Benches 1-6 you have already documented components, brass prep, sizing, annealing, priming, powder, and seating. Now gather those notes in one place so the finished ammunition can be checked against the work that produced it.
Inspect the finished ammunition against the documentation before it moves forward. Look over the rounds for primer seating, bullet seating, case-mouth condition, obvious damage, and anything that does not match the load record. Confirm the cartridge, rifle, bullet, primer, brass, powder charge, COAL, and CBTO target if measured. Anything questionable gets pulled before the Control measurements begin.
The box should identify what is inside without relying on memory. Record cartridge, rifle, bullet, powder charge, primer, brass, COAL or CBTO target, date, and the logbook reference. If the ammunition cannot be traced back to the record, the range data will not mean much.
Measure loaded neck diameter on finished rounds and record the minimum and maximum. With the same bullet diameter and seating process, loaded-neck diameter is the most accurate finished-round way to audit neck-wall thickness variation because the bullet is already seated inside the neck. This does not replace knowing your brass, but it shows what the loaded ammunition actually became.
Estimated per-side neck-wall variation can be approximated as Loaded Neck Spread / 2 when bullet diameter is constant. Example: 0.0007" / 2 = 0.00035".
Measure the loaded rounds with a bullet comparator and record the shortest and longest CBTO values. This calculates the seating-depth tolerance window the ammunition was actually loaded to. COAL is still useful for fit and function, but CBTO is the better control measurement for precision seating depth.
Measure total indicated runout on the bullet close to the case neck, not on the neck itself. Record the minimum and maximum TIR values and calculate the concentricity window achieved by the loading process. Competition seating dies can make a large improvement here because they support the case and bullet more consistently as the bullet enters the neck.
Summation is the process-control audit. It is more than writing down steps. The point is to understand what each measurement means, where it came from, and whether the finished ammunition confirms the process you used across Benches 1-6.
Loaded neck diameter points back to brass neck-wall consistency. CBTO spread points back to seating-depth control. Concentricity points back to case-mouth condition, die alignment, seating-die design, and press technique. Bench 7 is where those signals are organized before the ammunition is fired.
Shooters who want the highest level of process control can use Qual8 to connect the Bench 1-6 process data, the Bench 7 loaded-round audit, and the range results that follow. That keeps later changes tied to the process instead of relying on memory or guesswork.