I sort mine into a clear Plano fishing worm box, remove your outliers on each end, then shoot sequentially. No grouping necessary.
Those who sort primers by weight...
- Thread starter kelbro
- Start date
kelbro
Silver $$ Contributor
Thanks. Interesting. I had not considered that.
I might do that in reverse order. Reducing the priming compound charge (all things else assumed equal) as the day warms up.
One Eye Pete
Gold $$ Contributor
I shoot f- class club matches monthly. I sort my primers on my fx120i. I sort both BR2s and Ginex primers into batches of .02 gn. and put them back into the original trays. With sorted primers, and the correct powder (N555) both my 284 Shehane and my 7 PRCW normally give me SDs of 5 or below with no vertical flyers. I use the outliers for load development and sighters. Now if I could learn to read the wind and eliminate the horizontal flyers I could get really good.
Sorting primers isn’t for everyone, it is definitely a pain in the butt, absolutely unnecessary for hunting or normal shooting. However for long range competition where a match is won or lost by one point or an X or two I feel that it is worth the time.
Sorting primers isn’t for everyone, it is definitely a pain in the butt, absolutely unnecessary for hunting or normal shooting. However for long range competition where a match is won or lost by one point or an X or two I feel that it is worth the time.
AlNyhus
Silver $$ Contributor
Pete, one example is the bullet making thread on here. Excellent exchange of info on one of the most important pieces of the accuracy puzzle.Show me something to make me wrong.If the Short Range folks learn something they hide it under a bushel...
Like the old Dunkin' Donuts commercial....time to make the bullets.
A colander full of washed cores, rinsed and ready to dry:
Then rolled on a big slurp up towel:
Spread out to dry on a beach towel. Tomorrow, they'll get stuffed into jackets.
Good shootin' -Al
A colander full of washed cores, rinsed and ready to dry:
Then rolled on a big slurp up towel:
Spread out to dry on a beach towel. Tomorrow, they'll get stuffed into jackets.
Good shootin'
-Al
Since you winter down South....tell us what you're testing in the off season. And the results.
Good shootin'
-Al
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I know a lot more people are making their own bullets and I know that there are bullets and there are bullets. I'm pretty sure the vast majority of those individuals do not make their bullets available to the general public so whatever they learn isn't available to the general public. What use, to the shooting community, is one or a few shooters having a source for the ultimate bullet if they aren't generally available?Pete, one example is the bullet making thread on here. Excellent exchange of info on one of the most important pieces of the accuracy puzzle.
Like the old Dunkin' Donuts commercial....time to make the bullets.
A colander full of washed cores, rinsed and ready to dry:
Then rolled on a big slurp up towel:
Spread out to dry on a beach towel. Tomorrow, they'll get stuffed into jackets.
Good shootin'
Since you winter down South....tell us what you're testing in the off season. And the results.
Good shootin'
I'm 81 now and my time for testing and my mind will no longer allow me the ability to do much where memory is required. I appreciate what you do and thank you for putting in the time and money to do it.
Do you sell bullets?
Keep pullin them handles
Pete
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2-Stroke Dirt Devil
Silver $$ Contributor
I have started sorting my primers by weight. CCI 450s.
Have found 5 to 10 fps velocity change between the different weight sortings.
Was somewhat surprised with the overall uniformity with the CCI 450s.
Has improved my ES and SD, but still struggling with wind.
Have found 5 to 10 fps velocity change between the different weight sortings.
Was somewhat surprised with the overall uniformity with the CCI 450s.
Has improved my ES and SD, but still struggling with wind.
Just thinking about all the threads on primers. I really liked the pix of primers going off in the dark showing the volume difference in flame and sparks.
- If a primer has a heavier charge, it’s the same as more powder.
- The primer charge variation affects how the flame and heat penetrate the powder column and its rate of burning,
kelbro
Silver $$ Contributor
.003 spread sounds reasonable.
shoot4fun
Gold $$ Contributor
Okay, I've said this many times on this forum. In fact almost every time sorting primers has been mentioned.
"I will quit shooting before I weigh primers!".
Well, after being locked down by chemo treatments, poor weather and may other boredom causing reasons I decided to see just what this primer sorting biz is about. It was quite surprising what I found.
I set a digital scale that can measure 3 places down to .001 to grams and been weigh sorting a fresh box to CCI400 primers. I sorted them in a preset (in my mind) parameter of .01 spreads. As I went through them I came upon one primer that was WAY heavier than the other 999 and a few that were quite a bit lighter. It was tedious but broke the boredom. Later, in another boredom stupor, I decided to weigh a fresh brick of CCI450. That's when I found out these kind of fell in the same range of variance as the CCI400 and (as suspected) they were a bit heavier than the 400's. During the first 100 pack it dawned on me that the one prime mentioned above in that brick of 400's was in the weigh range of these 450's.
I'm not ready, in spite of that lone incident, to say sorting is the panacea but I'll come back with some results when things are nicer and weather makes for more hospitable test sessions.
"I will quit shooting before I weigh primers!".
Well, after being locked down by chemo treatments, poor weather and may other boredom causing reasons I decided to see just what this primer sorting biz is about. It was quite surprising what I found.
I set a digital scale that can measure 3 places down to .001 to grams and been weigh sorting a fresh box to CCI400 primers. I sorted them in a preset (in my mind) parameter of .01 spreads. As I went through them I came upon one primer that was WAY heavier than the other 999 and a few that were quite a bit lighter. It was tedious but broke the boredom. Later, in another boredom stupor, I decided to weigh a fresh brick of CCI450. That's when I found out these kind of fell in the same range of variance as the CCI400 and (as suspected) they were a bit heavier than the 400's. During the first 100 pack it dawned on me that the one prime mentioned above in that brick of 400's was in the weigh range of these 450's.
I'm not ready, in spite of that lone incident, to say sorting is the panacea but I'll come back with some results when things are nicer and weather makes for more hospitable test sessions.
Retired shooter
Gold $$ Contributor
After getting the new FX scale, and being bored, I weighed 200. CCI 450 primers. Would have to go to loading room, however I was pleased to find the consistency. Don't know if I would bother weighing again.
Weighed a few CCI 400. considerable lighter & weights fluctuating.
To all a good night.
Weighed a few CCI 400. considerable lighter & weights fluctuating.
To all a good night.
200 yd tunnel with 3.68g BR4 on the left vs 3.76 on the right. Next time I will do a 10 shot group. For some of us it is not busy work. It IS the fun. Shooting SWN is just a bonus.
This is finding the crumbs left on the table but everything matters, when it comes to ammo.
Pete
In my next life, I will have a tunnel to shoot in. I had the good fortune to shoot in Gene Beggs' tunnel years ago and I immediately wanted one.
round
Silver $$ Contributor
So, even with sorted primers, shouldnt the chrono numbers share similar numbers except the fps ?
It's those primers weight at each end of the bell curve when fired together that'll result in a measurable ES. Primers at one end bell curve used with those grouped right nest to them aren't going to show anything but a decent SD.
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