Primer Weighing and Sorting?

CBA Member

pat i. posted this 27 October 2023

That's a question I never thought of asking. This could be interesting.

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John Carlson posted this 27 October 2023

Have heard of it in the JBR world, no idea how common or if anybody ever demonstrated an advantage.

John Carlson. CBA Director of Military Competition.

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CBA Regional Director

Tom Acheson posted this 27 October 2023

Might be one of those John Alexander idioms.....prove to me it has a benefit or a stop it with the fantasy stuff!

Tom

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linoww posted this 27 October 2023

I've even wondered about orientation of the anvil of the primer to an index mark?

"if it was easy we'd let women do it" don't tell my wife I said that!

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CBA Regional Director

Tom Acheson posted this 28 October 2023

Someone told me some guys are recycling primers....holy cow Batman, we're headed for the cliff!

Long live simplicity and....fun!

Tom

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CBA Member

Eutectic posted this 28 October 2023

Does the position of the B on CCI benchrest primers matter?

Inquiring minds want to know.

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Bud Hyett posted this 28 October 2023

Great question. But i think the answer is not easily obtained.

With the manufacturing tolerances for the cup and anvil considered with the weight of the priming charge, how can a person define a testable scenario?

A person would need to assemble a primer with the same weight of cup, the same weight of anvil, the anvil set to the same depth and assure an uniform primer strike to have reliable data.

Farm boy from Illinois, living in the magical Pacific Northwest

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linoww posted this 28 October 2023

Does the position of the B on CCI benchrest primers matter?

Inquiring minds want to know.

nothing wrong with a B cup.

"if it was easy we'd let women do it" don't tell my wife I said that!

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4and1 posted this 28 October 2023

1000 yard competitors do it during the winter for sake of something to do. All they can do is weigh them. But those guys are looking for the lowest shot to shot velocity difference. A little means a lot at 1K.

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Wm Cook posted this 28 October 2023

1000 yard competitors do it during the winter for sake of something to do.

I tend to agree with 4&1. Things like weighing brass, sorting bullets to the tenth of a grain and probably sorting primers might burn off nervous energy but they are pushed out of the top “five high priority needs” for accuracy by other things.

I’ve never heard of jacketed BR shooters do anything other than using out of the box Fed 205M. However I would temper that by saying that they would never ever mix different lots of primers. Good topic though. Bill

A “Measured Response” is as effective as tongue lashing a stuck door.

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linoww posted this 28 October 2023

maybe weighing gas checks is the anwser.....

"if it was easy we'd let women do it" don't tell my wife I said that!

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Shuz posted this 28 October 2023

I think better results could be obtained by using a torque wrench on the nut behind the trigger!

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CBA President

John Alexander posted this 28 October 2023

What the shooting world needs is a $1,000 device in which you can spin primers, gas checks and plastic wads to see if they are dynamically balanced. It works for car wheels. Not sure if the little clip on weights to balance them could use lead these days?

If it leaked out that the winner of the Supershoot balanced his primers it would be a good time to buy stock in the company selling the machines. Everybody would have to have one,

Who knows, a whole industry might spring up to provide aftermarket accessories so you could customize your spinner to make it look more "tactical" and menacing. You could then claim you built it yourself. It worked for ARs and Ruger 10 22s. Maybe it could be improved by mounting it in an aluminum chassis instead of in the factory base to provide more stability. The possibilities are endless.

John

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CBA Member

Duane Mellenbruch posted this 28 October 2023

John, if it comes to that, perhaps when slugging a barrel, one should also measure the width of the lands and grooves to be sure they are all even. Any irregularity would surely upset the balance of the bullet and affect the flight. Maybe by as much as .00001" :-)

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John Carlson posted this 28 October 2023

Given current supplies, I think our efforts are better directed at making adapters to use small primers in large pockets.

John Carlson. CBA Director of Military Competition.

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CBA Member

Ken Campbell Iowa posted this 29 October 2023

lately i have been thinking maybe the trigger has a lot to do with un-accuracy ... mine certainly gives varied results ...

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mashburn posted this 29 October 2023

Hello John,

You certainly hit a sore spot of mine. Your statement of, making it look more tactical, would sell a lot of the machines. I am so sick of hearing people using the term tactical! I don't know why the term tactical excites so many people, not only in firearms, but tooth- brushes, razors and what not. Maybe these people spent too much of their lives playing shoot the bad guys in video- games. In all of the years I spent working for Uncle Sam, I got all I wanted of wagging, so called, tactical arms around every-day, never mind the every-day cleaning that took place also. Another thing they may need to know is, that when you carry that stuff around for real, there are some countries who wanted to shoot you. That's not near as much fun as shooting exploding targets or man sized silhouettes

John, I tend to think that you feel the same way as I, about tactical crap.Put the draft back in and soon, I don't think you would see near as many people hooked on tactical weapons.

Sorry, I just had, to vent. For me, make it Walnut and Steel.

Mashburn

David a. Cogburn

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OU812 posted this 29 October 2023

Talking about spinning and balancing primers. I have seen slow motion videos of air rifle pellets spinning in flight. The brand of pellet that wobbled less or zero wobble (fell asleep) always grouped better.

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linoww posted this 29 October 2023

lately i have been thinking maybe the trigger has a lot to do with un-accuracy ... mine certainly gives varied results ...

If my rifle could talk, it would complain that it has a really poor driver sometimes.

"if it was easy we'd let women do it" don't tell my wife I said that!

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4and1 posted this 29 October 2023

Last I looked, my primers stayed somewhat still while the bullet went spinning it's way to the target. Weighing them is just verifying the priming mixture is as close to the same amount as possible, causing the same burn as possible.

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Primer Weighing and Sorting?

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