Those who sort primers by weight...

[quest450]

Thank you Sir.
Now what about1760 yards and beyond with small caliber, for that purpose .

Have a great day.

It's not going to hurt anything, small cal like the 6mm is very accurate at 1K IF the conditions are good, I do not have any experience beyond 1K

 

[Straightshooter1]

I sort in .001 grams for 600 and 1K compensation and I don’t think that hi/lo weight matters as long as you shoot the same weight primers and eliminate the outliers

View attachment 1732199

Yeah, that's pretty much what I've found in my sorting efforts. For example, from the picture, I would not load a batch mixed with the 335 and 341. But I'd have no problem going with a batch of the 340 and 341 or a batch of 335 and 336. Reducing the ES in the primers being used for a batch loads helps with getting more consistent ignition.

 

[Liven The Dream]

I am out in the Cold. I have never do anything but put them in the case.
I have been shooting Matches back in the the late 80's to now.
Service Rifle Made Distinguished, Palma Mid and Long range HM, F/Open Mid and Long Range HM
Won three Regional' s
I only use CCI Primers 450's and BR2's
Russian when we could get them.

I will try the sorting task to see any difference ?

I once heard " It's not the Arrow, It's the Indian" say what ?

 

[JFrank]

I’ll be doing some further 1000 yard primer testing this winter and perhaps I’ll report back but essentially these are just for my own information.
With regards to score shooting, what if by simply shooting primers in their respective sorts a guy could gain a couple extra X’s or turn a couple 9’s into 10’s per target? How would that not help ones standings at the end of the day ?

 

[Retired shooter]

What scale are you using to measure within 0.01 grain? The Fx120i measures to within 0.02 grain.

FX120I
Will be measuring in grams. Was suggested here on the forum. I am going to try this, and see for myself if it's worth the effort.
Thanks

 

[DaveTooley]

Shooting multiple 10 shot strings over a chronograph would be more accurate than shooting at 1K. Too many variables shooting in the wild.
I think 5 10 shot groups of different weights would be a start. Just to eliminate a variable shoot the same 10 cases for each group. While your doing it track the velocity for each case.
Down the rabbit hole we go.

 

[Retired shooter]

I am out in the Cold. I have never do anything but put them in the case.
I have been shooting Matches back in the the late 80's to now.
Service Rifle Made Distinguished, Palma Mid and Long range HM, F/Open Mid and Long Range HM
Won three Regional' s
I only use CCI Primers 450's and BR2's
Russian when we could get them.

I will try the sorting task to see any difference ?

I once heard " It's not the Arrow, It's the Indian" say what ?

That's the story, as Mike Rowe says
It. " The Way I Heard It"

Thanks

 

[Retired shooter]

Shooting multiple 10 shot strings over a chronograph would be more accurate than shooting at 1K. Too many variables shooting in the wild.
I think 5 10 shot groups of different weights would be a start. Just to eliminate a variable shoot the same 10 cases for each group. While your doing it track the velocity for each case.
Down the rabbit hole we go.

5. - 10 round groups of each primer weight grouping through chrono. Sounds good, for testing, don't want to put excessive barrel on before getting to the ELR range.. I know test @ the long range.

Thank you.

 

[Rwfish]

Since this has come up again I’ll ask the same question I’ve posted before, where is the difference coming from? The cup, the anvil or the priming powder paste? If it’s not the paste, will it even matter? I ask only because I have separated several 205m primer components and found the largest difference are in the cup or anvil and not the paste. It was a small sample of 10 but it does raise more questions….

 

[memilanuk]

Supposedly people have taken apart the pieces, cleaned everything thoroughly, and weighed statistically significant samples of all the metal bits on laboratory grade equipment. Allegedly they are disturbingly consistent, and therefore, any variation in the weight of an un-fired primer is either the compound, or for some brands/models, the sealant. If you search back through the forum you can probably find the original posts on the subject.

That your results seem to contradict that is somewhat surprising.

 

[Retired shooter]

Since this has come up again I’ll ask the same question I’ve posted before, where is the difference coming from? The cup, the anvil or the priming powder paste? If it’s not the paste, will it even matter? I ask only because I have separated several 205m primer components and found the largest difference are in the cup or anvil and not the paste. It was a small sample of 10 but it does raise more questions….

OK
Not for me to say as I'm not one who has ever got that far into it. I'm looking to the RSGs remember. If I keep going back to the rabbit hole I may figure things out.

L8R

 

[Rwfish]

Supposedly people have taken apart the pieces, cleaned everything thoroughly, and weighed statistically significant samples of all the metal bits on laboratory grade equipment. Allegedly they are disturbingly consistent, and therefore, any variation in the weight of an un-fired primer is either the compound, or for some brands/models, the sealant. If you search back through the forum you can probably find the original posts on the subject.

That your results seem to contradict that is somewhat surprising.

My test were of unfired components and again only 10 primer of a single manufacture..

 

[No i deer]

I started weight sorting primers maybe 18 months to 2 years ago..
The lightest and heaviest get used for HME and blowoffs.
I feel my f open guns have shot flatter out to 1000yds since I started weight batching the primers..
Russian primers called Muroms..
In the US I think they were called Wolf

 

[Dave Way]

Quote from Dave Way......I love to compete against those that do not sort.

I hope he stopped filling those little bomb bottles.....LOL

@Fuj !

Thread 'Weight sorting primers-Test'

Dec 10, 2018

It's winter time, I'm bored and it's a great time to do tedious things before next shooting season. I have never weight sorted primers but have a few friends who do. When I asked them if it helped they said they weren't sure. The reason was they never knew if the variation was the priming mix or the metal cup and anvil. Tonight I did a little test to see what I could determine.

I weighed the primers left in a tray of Federal 205M's. 54 total.

1- 0.235 grams, 3.62gr
10- 0.236 grams, 3.64gr
27- 0.237 grams, 3.66gr
14- 0.238 grams, 3.68gr
2- 0.239 grams, 3.70gr

There did not...

• Dave Way
• Replies: 83
• Forum: Reloading Forum (All Calibers)

• 

Sometimes you just have to do the work. I didn’t sort primers until I started testing things, lots of things. How much velocity change equals 1” @ 1,000 yards? I know and I will continue sorting about everything I can.

Single digit extreme spreads and low single digit standard deviations are the norm for me.

Dave.

 

[tom]

Interesting, I could be talked into weighing primers if it makes as much a difference as a noturn vs a tight neck……. I’m betting at long range that vertical is the difference. how far?

Not picking on you whatsoever, but here's a funny story. Last season's awesome heavy gun for me was a no turn....and I weight sorted the primers lol. It was the first chamber I've tried no turn for 1k BR work. I haven't tested directly in a handful of years, but I'm getting lazy so the results must have been "worth it to me" back when I did.

For those interested and able. I like to test on paper at distance, and I prefer to alternate shots light, heavy, light etc. to negate condition changes. And I look for a poi shift between the two rather than group size vs group size.

Tom

 

[Woollybugger]

Not picking on you whatsoever, but here's a funny story. Last season's awesome heavy gun for me was a no turn....and I weight sorted the primers lol. It was the first chamber I've tried no turn for 1k BR work. I haven't tested directly in a handful of years, but I'm getting lazy so the results must have been "worth it to me" back when I did.

For those interested and able. I like to test on paper at distance, and I prefer to alternate shots light, heavy, light etc. to negate condition changes. And I look for a poi shift between the two rather than group size vs group size.

Tom

I assume only vertical shift.

 

[tom]

I assume only vertical shift.

In this case that is what I remember yes. Although harmonics can cause other shapes too, but it would need to be pretty decent out to see "other". I have shot heavies, lights, and middles during an actual 10 shot relay and got mixed results. I think the heavies were high and low, and then all others were a decent group on the one most recent so. I will see if the photo is still around, as I do think it was less old than this phone.

Tom

Edit,...I found it! I wasn't smart enough to number them, so could be lost in the noise of conditions.

 

[L.Sherm]

but I'm getting lazy

What!!! After I moved your not out there at 0 dark thirty in the winter!!! LOL

 

[JFrank]

There was a Tom sighting a couple weeks ago, I think he’s getting old cause we haven’t seen him since…lol

 

[Fairchaser]

Doesn’t everything in reloading matter? The question is by how much. If you could load everything identical or very close, then wouldn’t tuning a load become less relevant? Doesn’t getting and maintaining tune, give us competitive shooters the most anxiety? I rest my case. Sort primers.