I finally got my Hornady Neck Trimmer to use for my .300 AAC Blackout reloading. Not because I’m accuracy focused...but because I have some salvaged 5.56 cases. After processing and loading they won’t fit in my PSA barrel, as the brass is too thick at the neck.
Here’s where it gets challenging...the cases won’t fit on the 30 cal mandrel for the neck trimmer.
I’ve cut, formed and sized, trimmed, chamfered, and deburred these cases, only to find the neck openings are too small to fit onto the mandrel....so I can’t even get them close to the cutter, let alone do any cutting. They fit just fine on the 30 cal pilot for the Hornady Cam Lock Case Trimmer, though they had to be chamfered to slip on, but that’s as far as I can go.
The case necks readily take a bullet, even a 220gr Lapua Scenar L BTHP, but then the rounds won’t fit a case gauge, either. Is there another preparation step I’ve missed?
Here’s where it gets challenging...the cases won’t fit on the 30 cal mandrel for the neck trimmer.
I’ve cut, formed and sized, trimmed, chamfered, and deburred these cases, only to find the neck openings are too small to fit onto the mandrel....so I can’t even get them close to the cutter, let alone do any cutting. They fit just fine on the 30 cal pilot for the Hornady Cam Lock Case Trimmer, though they had to be chamfered to slip on, but that’s as far as I can go.
The case necks readily take a bullet, even a 220gr Lapua Scenar L BTHP, but then the rounds won’t fit a case gauge, either. Is there another preparation step I’ve missed?