Frequently Asked Questions

Can the sortinator sort by caliber so that I can load up unprepared range brass and have everything sorted?

Sort of. 
The machine can sort by caliber.  But, there are some problems that would need to be worked out.  A sieve such as a trommel, or slotted basket, or a roll sorter are typically used before running brass through the sortinator.  The Sortinator1150 was designed with a side-view camera so that parent cases can be separated, even if they have been reformed, such as 300BO reformed from 5.56.

  1. Feeding the brass
    None of these conditions jams the machine.  It will recover, and your buckets can have some false positives in them.  It’s up to you to decide what sort of accuracy you require.
    1. You need a case feeder that can feed base-down reliably.  I sell case feeders, but none that are generic that will feed mixed calibers base-down.
    2. Case length
      A 223 round is 3x longer than an 9mm.  When the machine is set up for 223, the bottom escapement is at the base, and the top escapement is pinching the side of the case above.  If you then sent 9mm through this arrangement, you will get double feeds of 9mm.
    3. Nesting
      You will need to feed cases that are not nested, such as 9mm nesting inside of 45ACP.
  2. Guides
    The machine has three configurations.  Large rifle, small rifle, pistol.  The guides are adjusted for the caliber, and some caliber combinations will jam if the guides are too far apart.  Like for 30-06 the guides will need to accommodate 5/8″ diameter.  If you then have 223, the base of one round will slide past the mouth and rest on the shoulder of the 223 below, jamming the sorter.
  3. Imaging
    1. The user configures the machine to look at a region for the brass.  There is a tracking algorithm, and it does a pretty good job to correct for misalignment.
Do I need to wash my brass before sorting?

 No. However, cleaned brass will sort more accurately.

How accurate is the sorter?

A1: Up to .9999 accurate as reported by some customers.
But getting that level of accuracy requires strict conditions.  The brass must be clean with headstamps in good condition, and the type of sort you are doing.  The customer didn’t report efficiency, but probably in the 80% range

 

A2: The sorter headstamp algorithm give results with four possibilities:

  • True positive
    Example: Federal properly identified as Federal
  • False positive
    Example: Lake City identified as Federal
  • True negative
    Example: Lake City identified as unknown (mixed)
  • False negative
    Example: Federal identified as unknown

# cases in bucket = # true positives + # false positives

The algorithm has a user provided setting for threshold of uncertainty.  The higher uncertainty you allow, the more false positives will be in your Federal bucket.  The lower uncertainty (more strict), the more accurate your Federal bucket will be, and your mixed bucket will contain more false negatives.

Setting uncertainty to low:

  • Accuracy approaches 100%, and is easy to achieve.  A person may sort 1,000 rounds and have only one round in the federal bucket, therefore 100% accuracy, but the mixed bucket contains 999 federals.  This would be terrible efficiency.
  • Efficiency is lower
  • False negative rate increases
  • True negative rate unchanged

Setting uncertainty threshold to high

  • Accuracy is lower.
    Many customers sort at 95-98% accuracy, which requires about an hour of training for a simple sort.
  • Efficiency is higher

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