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Hornady bullet comparator issue.

Kangbeef

Sergeant of the Hide
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Minuteman
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Aug 12, 2024
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Ok starting sorting bullets with the hornady bullet comparator. After watching tv I noticed my measurements were changing. I would got back to pile and they were all different. I had the anvil/bushing on lower caliper jaw then close they jaw till the base of the bullet touched the upper jaw. The spin the bullet till it sat flat on the jaw. So i guess its wearing it out being aluminum and be making rookie mistakes. Is this a common issue and keep going till it makes a nice seating spot. Its frustrating because all my piles are off. F@$K IT load them up to the max and send it lol.
 

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Ok starting sorting bullets with the hornady bullet comparator. After watching tv I noticed my measurements were changing. I would got back to pile and they were all different. I had the anvil/bushing on lower caliper jaw then close they jaw till the base of the bullet touched the upper jaw. The spin the bullet till it sat flat on the jaw. So i guess its wearing it out being aluminum and be making rookie mistakes. Is this a common issue and keep going till it makes a nice seating spot. Its frustrating because all my piles are off. F@$K IT load them up to the max and send it lol.
You might be using too much pressure??? 🤷‍♂️

It's takes some time to develop a good feel for using a caliper to get consistent reading, especially when using a comparator like that. You might try putting the comparator assembly on the upper jaw and no anvil on the bottom jaw.

You didn't say what caliper you're using. If you don't have a good caliper, getting inconsistent measurements would be normal.
 
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You might be using too much pressure??? 🤷‍♂️

It's takes some time to develop a good feel for using a caliper to get consistent reading, especially when using a comparator like that. You might try putting the comparator assembly on the upper jaw and no anvil on the bottom jaw.

You didn't say what caliper you're using. If you don't have a good caliper, getting inconsistent measurements would be normal.
Yeah true that. That may be a near future purchase as many people use mitutoyo(msi viking) i believe for best pricing. Gonna try the old lyman calipers I got in a package deal years ago that was a steal. My digital rcbs calpiers are going it the junk drawer.
 
Lol yeah but I am not at that stage yet just doing repetitions and learning. I guess the good ones require some loot.
IMHO. . . this is a good price for a good caliper:


Then there are the really good comparators:
 
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View attachment 8543746

Ok starting sorting bullets with the hornady bullet comparator. After watching tv I noticed my measurements were changing. I would got back to pile and they were all different. I had the anvil/bushing on lower caliper jaw then close they jaw till the base of the bullet touched the upper jaw. The spin the bullet till it sat flat on the jaw. So i guess its wearing it out being aluminum and be making rookie mistakes. Is this a common issue and keep going till it makes a nice seating spot. Its frustrating because all my piles are off. F@$K IT load them up to the max and send it lol.
Were you using it with lead or Moly coated bullets? Looks awful dark.
Unless they took the incredibly cheap step of drilling the bushing after anodizing the surface should be harder than any common projectile.
 
Were you using it with lead or Moly coated bullets? Looks awful dark.
Unless they took the incredibly cheap step of drilling the bushing after anodizing the surface should be harder than any common projectile.
69gr smk .224 no they didnt drill it was all me with to much pressure. Trying to get used to the anvil on the upper jaw lol.
 
IMHO. . . this is a good price for a good caliper:


Then there are the really good comparators:
Guess i will place some orders tomorrow while in the treestand. Have a good night to everyone. Thanks again for the lessons
 
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You might be using too much pressure??? 🤷‍♂️

It's takes some time to develop a good feel for using a caliper to get consistent reading, especially when using a comparator like that. You might try putting the comparator assembly on the upper jaw and no anvil on the bottom jaw.

You didn't say what caliper you're using. If you don't have a good caliper, getting inconsistent measurements would be normal.
Sorry dumb question but do you give whatever you're measuring with a caliper/comparator a twist? I give light pressure using the adjustment wheel then roll the case or complete cartridge with my fingers when checking case length, shoulder length, or seating depth.

It seems to me that would cause it settle on the shortest spot and increase consistency but I don't really know. It does make faint marks on my bullet ogive.
 
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A light touch on the caliper closing + a small rotation will usually improve the presentation, and result in more consistent measurements. The key thing is the jaws are hard and the brass/bullts are soft. Don't bite too early before its squared up, and don't over-work the rotation once the presentation is good
 
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Sorry dumb question but do you give whatever you're measuring with a caliper/comparator a twist? I give light pressure using the adjustment wheel then roll the case or complete cartridge with my fingers when checking case length, shoulder length, or seating depth.

It seems to me that would cause it settle on the shortest spot and increase consistency but I don't really know. It does make faint marks on my bullet ogive.
IMHO, sounds like you're doing it correctly, as I find doing it that way gives me consistent results. I'm pretty "light" with the pressure and sometimes I do get a faint burnish on the ogive, but for me, that indicates I'm either putting a little too much pressure with the caliper (as light as it is) and/or am twisting such as to wedge the bullet into the comparator too much with my fingers.
 
Sorry dumb question but do you give whatever you're measuring with a caliper/comparator a twist? I give light pressure using the adjustment wheel then roll the case or complete cartridge with my fingers when checking case length, shoulder length, or seating depth.

It seems to me that would cause it settle on the shortest spot and increase consistency but I don't really know. It does make faint marks on my bullet ogive.
Yes i gave them a roll between my fingers to find where it sits flat. I think thats what has caused my issue. I have heavy hands and need practice on a lighter touch.
 
Probably but its me wanting to learn. Its really intriguing and fun to do.

What you need to learn is what is worth doing and what is not and what is worth spending money on and what is not. But seems like you want to learn that yourself instead of learning from those of us that wasted our time and money on things so have fun. 😉
 
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And there probably was no adverse effects to the accuracy either, right?
Probably but its me wanting to learn. Its really intriguing and fun to do
How much difference between the readings?

Forgive me for saying, but are you chasing insignificant differences?




P
It started with different seating depths and not staying consistent. So started the sorting on bullets based on ojive to base. Learning lessons and mistake on me. Future steps will be asked with many questions and advice.
 
Probably but its me wanting to learn. Its really intriguing and fun to do

It started with different seating depths and not staying consistent. So started the sorting on bullets based on ojive to base. Learning lessons and mistake on me. Future steps will be asked with many questions and advice.


Okay, but be advised you’re heading down a rabbit hole with no return on investment, unless you’re a competitive shooter.

Your shooting technique likely has more impact on your precision than a few thousandths here or there.




P
 
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One day you’ll come to the conclusion that proper brass preparation has more influence on precision than primer selection.

Then you’ll realize that annealing and neck tension are more important than anything except runout.

Then some day they’ll find you rocking in a corner saying “RCBS lied to me” over and over…





P
 
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Okay, but be advised you’re heading down a rabbit hole with no return on investment...
On the contrary, OP is simply trying to learn how to measure stuff. If he ends this thread with a reliable caliper and a gauge block, and the skills to use them consistently, he's doing well with his time and money.

Simply learning to do GOOD job on QC checks is a huge part of the reloading process. Having better, easier to use tools (and reliable technique) makes this non-glamourous activity go alot faster, and smoother.

And you're therefore less tempted to skip these critical checks/double-check etc steps in your final process.

Just my $0.02
 
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On the contrary, OP is simply trying to learn how to measure stuff. If he ends this thread with a reliable caliper and a gauge block, and the skills to use them consistently, he's doing well with his time and money.
Exactly and this is what i have gathered. Quality tools, advice and ask questions. I will be no expert over night
 
Exactly and this is what i have gathered. Quality tools, advice and ask questions. I will be no expert over night

You need to listen to all the answers and not just the ones you want. Pharmseller is trying to help you also. I have been competing for over 20 years and never sorted a bullet. Maybe if you were a top 1000 yard BR guy but short of that if you buy good bullets you are just wasting time. Learning how to do it is fine but don’t think it has to be done.
 
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You need to listen to all the answers and not just the ones you want. Pharmseller is trying to help you also. I have been competing for over 20 years and never sorted a bullet. Maybe if you were a top 1000 yard BR guy but short of that if you buy good bullets you are just wasting time. Learning how to do it is fine but don’t think it has to be done.
Yes you're right also. I have realized i am overthinking and need to see what equipment i really need first. Then move forward.