Skip to product information
Modified Cases are readily available to fit most popular rifle chambers.
All are manufactured to SAAMI specs.
Lock-N-Load O.A.L. Gauges
Overall Length Gauge, Modified Case
B7MMP
For: 7MM PRC
Modified Cases are readily available to fit most popular rifle chambers.
All are manufactured to SAAMI specs. 
Lock-N-Load O.A.L. GaugesRegulating seating depth and the resulting "jump" to the rifling is widely regarded as fundamental to improved accuracy. A few thousandths of an inch change between the bullet and the rifling can make the difference between average accuracy and real tack-driver performance.
Product Line
Straight Model
Item #C1000The Lock-N-Load® O.A.L. Gauge is universally acclaimed as the most accurate, easy-to-use and reliable method of regulating seating depth and the resulting "jump" to the rifling.
Curved Model
Item #C1550
For all autoloader, lever-action, or pump-action rifles. Also fits all bolt-action and single-shot firearms. Inserts into chamber through ejection port. Not compatible with Adapter "D" or short-bodied cases.
~~~~~~~~~~~~~~~~~~~~~~~~~~~
We are unable to accept returns on used, fitted, or altered parts.
Returns must be in new, unused condition and in their original packaging.