Cross-section showing over-crimping, causing the crimp bucket to crack.
With cartridges that don't headspace on the case mouth --revolvers or autos--a roll crimp
is standard procedure.
is much more forgiving than roll crimp
, but it is also more subtle, so this article will delve into the aspects of taper crimp
, by the way, are excellent sea trout flies.
Then run the lines through the studs (Photo 1), make 90-degree turns with a plastic or metal elbow sleeve, or crimp
in right-angle fittings in tight quarters (Photo 2, p.
yarns have apparently become conspicuous in the fiber industry [8-12]; however, few researchers have investigated the crimp
mechanisms and the effect of fiber-processing parameters on the "crimp
Beyond quality advantages, automating the process eliminates pre-reduction crimp
steps, greatly reduces cycle times, and significantly improves production yields, he points out.
Speaking of crimps
, if you reload on a MEC press, and most of us do, there is a super little proprietary accessory Ballistic Products offers.
My eyeballed 9mm crimps
were a lot tighter than I thought (another reason to own, and use, a dial caliper).
This is a combination of taper and roll crimps
that has been shown to often improve accuracy.
The electronic crimper, a hand-held, motor-driven, battery-operated device, crimps
1-mm aluminum seals onto standard 12 mm x 32 mm (2mL) crimp
Whether you're forming six-or eight-point crimps
, the skiver is a handy tool to have on the bench.
With roll crimps
there is a fine line between crimping and crushing the case.
When all was done, my conclusion was that as long as you are careful not to overdo it, roll crimps
are just fine.