The APW Expander Mandrel effectively smooths and gently expands the case neck, ensuring consistent neck tension. This method has proven to be the most straightforward approach to significantly reduce Extreme Spread (ES) and Standard Deviation (SD) figures.
Commercial die manufacturers often lack standardized specifications for the expander ball in their dies. This variance necessitates proper inside diameter sizing before seating. We recommend the complete removal of the expander ball from your resizing dies.
Your final step before powder addition should be to expand your necks using the appropriate expander mandrel. When employing the mandrels, we advise using Imperial sizing lube sparingly, as a little goes a long way. We employ a single-stage press to expand the neck on the downstroke, followed by packing the brass, now “ready for primer and powder,” into our APW reloading trays.
The die body is compatible with your standard reloading press, and the interchangeable mandrels are precisely sized. The kit comprises mandrels for achieving 0.001 or 0.002 neck tension, along with a base to maintain organization when not in use.
Impact Shooting's review of the Mandrel Set:
Precision Rifle Network's review of the Mandrel Set:
We recommend removing the expander ball completely from your resizing dies. Your last step before adding powder will be to expand your necks using the appropriate expander mandrel. We recommend using Imperial sizing lube when using the mandrels, a little bit goes a long way. We use a single-stage press to seat the primer and expand the neck on the downstroke, then we pack the "ready for powder" brass into our APW reloading trays.
The Die body fits your normal reloading press and the interchangeable mandrels are sized to precise dimensions. The kit includes mandrels for running 0,001 or 0,002 neck tension as well as a base to keep everything in place while not in use.
The APW Expander Mandrel will smooth out and slightly expand the case neck so the brass will be ready for consistent neck tension. You don't have to use dry neck lube before expanding your necks. We have found this is the easiest method to greatly reduce your Extreme Spread (ES) and Standard Deviation (SD) numbers.
Skinny Die
The APW Expander Skinny Die is designed to fit the Forster Co-Ax reloading press.
The complete set includes:
224Cal
0.223
0.222
243 Cal (6mm)
0.242
0.241
264 Cal (6.5mm)
0.263
0.262
284 Cal (7mm)
0.283
0.282
30 Cal (308)
0.307
0.306
338 Cal
0.337
0.336
Custom calibers can be ordered here or through sales@precisionzone.ca