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Suggestion on a BTO bullet sorting tool?

The description clearly states "accurately sort bullets by base to ogive length".
Thanks when I brought up this ( https://www.brownells.com/reloading...air-bullet-sorting-stand-with-dial-indicator/ ) I read as follows..

"The Sinclair Bullet Checker Stand allows you to quickly and accurately sort bullets by base to give length."
That reads as some bad AI speak to me. :)
 
So after sorting 500 223 bullets yesterday with a caliper and comparitor im looking for a better tool option.

Please, no OAL bullet sorting tools.

Thanks.

The Accuracy One Seating Depth Comparator works very nicely for sorting bullets, it's actually fast and easy (no AOL sorting ;) :

 
The Accuracy One meplat trimmer body also doubles as a handy caliper mount, great for sorting. You can insert the bullet tip into the cutter body and use the caliper arm to measure from the bullet base. It’s very fast to check several dozen, just sliding the calipers open and closed.

Usually with a good lot of bullets you can skip sorting on BTO, but I always check it. It’s not actually BTO but a reasonable surrogate. The bullet nose stops in the cutter before you hit the ogive so it’s “base to some spot farther out on the bullet nose”.

If you attach an ogive adapter to the caliper arm you can measure a surrogate of bearing surface, on 180 hybrids the range was +\- 0.001 or so, so I didn’t sort on that small difference.

The pic was handy on my phone but it’s wrong. Always insert the bullet TIP into the cutter body (tip should be pointed to the right in the pic). Don’t insert the bullet base into the cutter body, as there’s no flat inside there for the base to sit on, and it creates apparent differences from bullet to bullet that aren’t real (fail to confirm when measure BTO the conventional way).
 

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If a fella was ‘really’ really ‘ dead set on sorting bullets, I do it by base to seater stem contact point into small groups first then sort the best of those by base to ogive into small groups, that way your confident that when you move the seater .001 the relationship to the lands changes the same amount, then sort the best of the best by OAL into .002 groups for long range applications.

Or you could just buy better bullets .
 
The pic was handy on my phone but it’s wrong. Always insert the bullet TIP into the cutter body (tip should be pointed to the right in the pic). Don’t insert the bullet base into the cutter body, as there’s no flat inside there for the base to sit on, and it creates apparent differences from bullet to bullet that aren’t real (fail to confirm when measure BTO the conventional way).
The setup as shown in the pic could be used to measure bullet bearing length…
 
The setup as shown in the pic could be used to measure bullet bearing length…
I thought so too till recently. Inserting the bullet base into the cutter as shown appears to measure base to ogive, but differences from bullet to bullet do not confirm using just the calipers w the Hornady ogive adapter. So always insert the tip not the base.
 
I thought so too till recently. Inserting the bullet base into the cutter as shown appears to measure base to ogive, but differences from bullet to bullet do not confirm using just the calipers w the Hornady ogive adapter. So always insert the tip not the base.
Interesting. When I insert the base of a 6mm boat tail bullet into the Hoover trimmer body, contact occurs on the boat tail taper nearly at the bullet’s body diameter. The bullet base almost extends into the cross drilled hole in the trimmer body.
 
Interesting. When I insert the base of a 6mm boat tail bullet into the Hoover trimmer body, contact occurs on the boat tail taper nearly at the bullet’s body diameter. The bullet base almost extends into the cross drilled hole in the trimmer body.
That sounds correct, there’s no flat there to catch the base just an angled corner. And I guess there’s some variation (bullet to bullet) in the diameter of the base that isn’t reporting variation in the position of the base relative to the ogive, so you conclude variation in BTO (up to 7 for my 6mm bullets) when the variation is really more like 2 ( maybe insignificant).
 

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