GlockTalk.com
Home Forums Classifieds Blogs Today's Posts Search Social Groups



  
SIGN-UP
Notices

Glock Talk
Welcome To The Glock Talk Forums.

 
  
Reply
 
Thread Tools Display Modes
Old 11-30-2014, 13:03   #1
picker
Senior Member
 
picker's Avatar
 
Join Date: Nov 2014
Location: Texas Hill Country
Posts: 108
Seperating head stamps

Worth the effort ? I am new to reloading as most of you men know, and as I work up some loads trying to find a few favorites.
I have noticed I shoot fair and poor with same load,now I know I shoot beter some days I suppose we all do ?
And I understand the difference between shooting on a calm day and a windy one.
But after shooting the same load several times/days I find little consistency, there are only 2 variables me and the cases.Everything else is the same.
Now I know I aint the best shot, but some times I get a good tight pattern and sometimes they are way off.
Just curious about this as Im reloading range brass.
Best/joe
picker is offline   Reply With Quote
Old 11-30-2014, 14:14   #2
F106 Fan
Senior Member
 
F106 Fan's Avatar
 
Join Date: Oct 2011
Posts: 6,437
You didn't say WHAT you were shooting but it reads like rifle.

I have the exact same experience using all Lapua Match cases. Some days the shiny little bullets all go in the same hole. Some days they don't.

Since I am using match brass, individually weighed charges and Sierra match bullets seated with a Redding competition die, I am willing to take the giant leap that the problem is me.

Some days I am more comfortable behind the rifle. Other days I just don't seem to get in the right position. You would think I would know better but somehow, I don't.

Sure, if you want, separate the cases. In fact, you can fill them with water to separate them by volume. I guess you just assume all spent primers (holding the water in) contain the same volume. Experiment a little bit and see what happens.

Temperature will affect velocity and that may move the zero. I'm not sure that I believe it will increase spread. Maybe... Try keeping a record of wind, temperature and humidity. Yup! Buy one of the Kestrel weather units with Bluetooth. Then you can link it to STRLOK+ (ballistic software) on your cell phone. Very cool.

It's all about consistency and somehow that is illusive. Everything matters when you want tiny groups.

Richard
__________________
"No matter how cynical you become, it's never enough to keep up." - Lily Tomlin

Last edited by F106 Fan; 11-30-2014 at 14:23..
F106 Fan is offline   Reply With Quote
Old 11-30-2014, 14:21   #3
F106 Fan
Senior Member
 
F106 Fan's Avatar
 
Join Date: Oct 2011
Posts: 6,437
I suppose we should define the groups on good days versus the groups on bad days.

At 100 yards with my Rem 700 .308, my best group is 3 bullets in exactly the same hole. Group size 0" On an average day, my groups are closer to 1/2", maybe a little less. A bad day will see the groups out to 3/4"-1". Still pretty good but not as good as it has been.

That's the problem with having an exceptional day. I keep wanting it to happen all the time. Of course it can't, that's why the good day was called exceptional. It is an exception to my average shooting.

But even on a good day, I can still get flyers where I wonder what planet I was aiming at.

So, I just laugh it off and keep on shooting! Just concentrate...

Richard
__________________
"No matter how cynical you become, it's never enough to keep up." - Lily Tomlin
F106 Fan is offline   Reply With Quote
Old 11-30-2014, 15:01   #4
WeeWilly
Senior Member
 
Join Date: Nov 2011
Location: PRK
Posts: 1,916
What are you loading/shooting?
__________________
Audentes fortuna iuvat
WeeWilly is offline   Reply With Quote
Old 11-30-2014, 15:39   #5
danattherock
Senior Member
 
danattherock's Avatar
 
Join Date: Mar 2010
Location: North Carolina
Posts: 751
I only use same head stamp. For plinking loads on Dillon 550 is use PMC brass that's all trimmed with my Worlds Finest trimmer. I'm using 55 gr hornady bullets and H335. 1.25-1.5" groups, but very affordable ammo.

For target loads, I use single stage press, and weight sorted Lapua brass. Generally, 94.5-95.5 gr is low batch, 95.5-96.5 middle, and 96.5-97.5 high batch. I see 60% fall in middle, 20% on high and low. But the rounds are with 69 and 77 SMK. Precision stuff that is giving sub MOA 10 shot groups. Working towards 1/2" 5 shot groups. That's the great thing about reloading. Can be as simple or complex as you make it.
__________________
The two loudest sounds known to man: a gun that goes bang when it is supposed to go click and a gun that goes click when it is supposed to go bang.

Last edited by danattherock; 11-30-2014 at 15:40..
danattherock is offline   Reply With Quote
Old 11-30-2014, 16:57   #6
willie_pete
NRA Life Member
 
willie_pete's Avatar
 
Join Date: Sep 2000
Posts: 2,587
I separate by headstamp for match ammo, pistol or rifle. For practice, not so much. I notice a difference,

WP
__________________
To Err is Human; To Forgive is not Current SAC Policy

NRA Instructor in Pistol, Advanced Pistol, Rifle, Shotgun, PP In/Outside the Home, Metallic/Shotshell Reloading, Chief RSO, Certified Glock Armorer, NRA Life Member

Last edited by willie_pete; 11-30-2014 at 16:58..
willie_pete is offline   Reply With Quote
Old 11-30-2014, 17:13   #7
Three-Five-Seven
Señor Mombo
 
Three-Five-Seven's Avatar
 
Join Date: Aug 1999
Location: Tucson
Posts: 3,347
1000 yard precision rifle ammunition = all brass weight matched from the same lot (manufacturer).

Gas Rifle = same manufacturer in groups by number of firings.

Pistol calibers = Life is too short for such crapola.
__________________
That I could be wrong is an eventuality that has not escaped me. I just painted the pictures as I saw them. I do not know how to do anything else. (Saint Elmer, 1955)
Three-Five-Seven is offline   Reply With Quote
Old 11-30-2014, 17:54   #8
picker
Senior Member
 
picker's Avatar
 
Join Date: Nov 2014
Location: Texas Hill Country
Posts: 108
Quote:
Originally Posted by WeeWilly View Post
What are you loading/shooting?
Sorry folks I forgot to say 9mm stock Glock @ 45 yds.
Best/joe
picker is offline   Reply With Quote
Old 11-30-2014, 18:26   #9
unclebob
Senior Member
 
unclebob's Avatar
 
Join Date: Oct 2000
Location: Mary Esther FL
Posts: 7,059
I take out the military, A-MERC, and S&B brass. Try and save the Winchester. The rest is all mixed.
__________________
Team Carver Custom
NRA Certified Instructor
NRA Benefactor Life Member
GSSF Life Member
___________________________________________
unclebob is offline   Reply With Quote
Old 11-30-2014, 18:53   #10
WeeWilly
Senior Member
 
Join Date: Nov 2011
Location: PRK
Posts: 1,916
Quote:
Originally Posted by picker View Post
Sorry folks I forgot to say 9mm stock Glock @ 45 yds.
Best/joe
Good news then, just load 'em! It isn't the cases.
__________________
Audentes fortuna iuvat
WeeWilly is offline   Reply With Quote
Old 11-30-2014, 20:36   #11
willie_pete
NRA Life Member
 
willie_pete's Avatar
 
Join Date: Sep 2000
Posts: 2,587
Quote:
Originally Posted by WeeWilly View Post
Good news then, just load 'em! It isn't the cases.
I wouldn't be too sure of that. Run an experiment; sorted brass vs. assorted, everything else the same. If the group sizes are different, it's the brass
. I've seen differences in Bullseye shooting.
WP
__________________
To Err is Human; To Forgive is not Current SAC Policy

NRA Instructor in Pistol, Advanced Pistol, Rifle, Shotgun, PP In/Outside the Home, Metallic/Shotshell Reloading, Chief RSO, Certified Glock Armorer, NRA Life Member

Last edited by willie_pete; 11-30-2014 at 20:37..
willie_pete is offline   Reply With Quote
Old 11-30-2014, 20:52   #12
DWARREN123
Grumpy Old Guy
 
DWARREN123's Avatar
 
Join Date: Jan 2008
Location: CLARKSVILLE TN
Posts: 4,836
For most straight wall pistol calibers I have seen no major difference as for rifle I have no idea.
__________________
Have a Nice Day
DWARREN123 is offline   Reply With Quote
Old 12-01-2014, 01:04   #13
WeeWilly
Senior Member
 
Join Date: Nov 2011
Location: PRK
Posts: 1,916
Quote:
Originally Posted by willie_pete View Post
I wouldn't be too sure of that. Run an experiment; sorted brass vs. assorted, everything else the same. If the group sizes are different, it's the brass
. I've seen differences in Bullseye shooting.
WP
Perhaps you are right, I frankly have never shot 9mm in a Bullseye competition.

For pistol, I only sort head stamp based on brass thickness, thick brass goes for jacketed, the thin stuff gets used for lead.

Whole nutter deal for rifle, course.
__________________
Audentes fortuna iuvat
WeeWilly is offline   Reply With Quote
Old 12-01-2014, 17:36   #14
rv4driver
Senior Member
 
rv4driver's Avatar
 
Join Date: May 2010
Location: Ft. Collins, Co.
Posts: 563
Absolutely for precision rifle. The only reason I sort for pistol is that when I started reloading and saving brass, I got into the habit. I wish I hadn't. In precision (Bullseye pistol) it will make a difference. A stock Glock, not so much, but at 45yds, you may see some difference.
And what they said...concerning Amerc. Total crap.
rv4driver is offline   Reply With Quote
Old 12-01-2014, 19:00   #15
Rleee
Senior Member
 
Join Date: Jul 2009
Location: West Central Fla
Posts: 169
With pistol cartridges the only time I have found that it is important to match headstamps along with lot numbers by the way is when you are loading maximum loads. FWIW I have rarely if ever found maximum loads to be the most accurate.
Also, if are you are shooting 9mm out of an early Glock you might encounter what is called the "Glock Bump." This is a little portion of the case that expands where the unsupported portion of the feed ramp is. Just be aware that Redding makes a special die to remove the "bump" if it's a problem. I personally have never had the problem, but it's something to be aware of.
__________________
If you're gonna be stupid ya gotta be tuff.
Rleee is offline   Reply With Quote
Old 12-01-2014, 20:05   #16
Schrag4
Senior Member
 
Schrag4's Avatar
 
Join Date: May 2010
Location: Wichita, KS
Posts: 929
I only use the same headstamp for pistol when I'm working up a load, trying to minimize case volume variability. I use mixed brass once it's time to crank them out.
Schrag4 is online now   Reply With Quote
Old 12-01-2014, 21:09   #17
DanaT
Pharaoh
 
DanaT's Avatar
 
Join Date: Feb 2005
Location: CO & Baden –Württemberg
Posts: 18,278
Blog Entries: 1
Quote:
Originally Posted by unclebob View Post
A-MERC,
I HATE THAT STUFF.

The A-MERC pistol brass, when reloaded wont fully chamber and doesnt meet spec when using a drop in cartridge gauge.

Definitely sort that right into the trash bin. Luckily I havent seen much of it lately.
__________________
Many of the truths that we cling to depend on our point of view.
Is there something you need from me
Are you having your fun
I never agreed to be
Your holy one
DanaT is offline   Reply With Quote
Old 12-01-2014, 21:11   #18
DanaT
Pharaoh
 
DanaT's Avatar
 
Join Date: Feb 2005
Location: CO & Baden –Württemberg
Posts: 18,278
Blog Entries: 1
Plinking ammo I dont sort brass.

High quality target ammo and varmint ammo, I sort brass.

Fluted chambers = military brass and reloading fluted chamber brass only for fluted chambers. It seems to resize OK and is smooth, but man its ugly. The good news, is I lose 50-70% of this brass as the brass is flung 15 feet in front of the firing line.
__________________
Many of the truths that we cling to depend on our point of view.
Is there something you need from me
Are you having your fun
I never agreed to be
Your holy one
DanaT is offline   Reply With Quote
Old 12-01-2014, 21:24   #19
happie2shoot
Senior Member
 
Join Date: Jan 2008
Posts: 987
I have found that many powders are better at high pressure, some powders
will not work in some guns because the guns are not strong enough to contain
enough pressure for consistent ignition.

If you shoot long range rifle or pistol different cases can cause large extreme
spread in velocity.
happie2shoot is offline   Reply With Quote
Old 12-02-2014, 09:00   #20
picker
Senior Member
 
picker's Avatar
 
Join Date: Nov 2014
Location: Texas Hill Country
Posts: 108
Thanks men for all the good advice.
Best/joe
picker is offline   Reply With Quote

 
  
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump




All times are GMT -6. The time now is 16:59.




Homepage
FAQ
Forums
Calendar
Advertise
Gallery
GT Wiki
GT Blogs
Social Groups
Classifieds


Users Currently Online: 996
266 Members
730 Guests

Most users ever online: 2,672
Aug 11, 2014 at 2:31