New Posts New Posts RSS Feed - chamber lenght
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Check GunBroker.com for SWFA's No Reserve and No Minimum bid firearm auctions.

chamber lenght

 Post Reply Post Reply   Topic Search Topic Search  Topic Options Topic Options
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 20:29
prkrgrp View Drop Down
Optics GrassHopper
Optics GrassHopper


Joined: October/16/2010
Location: lake oswego ore
Status: Offline
Points: 16
is there a tool that i can measure my 22-250 chamber, to get the right measurement for reloads
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 21:21
Roy Finn View Drop Down
MODERATOR
MODERATOR
Avatar
Steiner Junkie

Joined: April/05/2004
Location: United States
Status: Offline
Points: 4856

Make up a dummy round to determine the length. Depending on bullet weight and shape this measurement will vary quite a bit and will depend on how long a throat your chamber has. All this won't matter much though if your magazine won't handle the length of a round that is set up for max COAL. It's probably best to make up a dummy round with the bullet you plan to use by partially sizing the neck of your brass so that the grip on the bullet after you seat it will move easily when you chamber the round (no powder or primer) and push the bolt forward and closed. That will push the bullet into the case and will tell you what the max overall length will be with the bullet seated into the lands. When you remove the dummy round you can measure it with a caliper and set up your seating die accordingly. Me personally, I like to set up my reloads with the bullet "kissing" the lands so long as the magizine length will allow it.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 21:36
308 Sav View Drop Down
Optics Journeyman
Optics Journeyman
Avatar

Joined: July/18/2010
Location: Kentucky
Status: Offline
Points: 362
+ 1 

but a caution if you seat your bullets touching your lands. This will increase pressure so start your load development over and gradually increase powder till you find the load again.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 21:50
sakomato View Drop Down
Optics Master
Optics Master
Avatar

Joined: February/28/2008
Location: Houston
Status: Offline
Points: 1085
Yes, Hornady makes 2 tools, one for headspace and one for COAL
 
M-I-D-W-A-Y sells them but I can't link because they also sell scopes and this is a scope selling website (and a much better one at that)
 
With the headspace tool you can take a measurement from the case head to the shoulder on new cases and then on fired cases
 
you will need the tool and a insert to fit your caliber
 
and with the COAL tool you can measure the distance from the case head to the lands
 
you will need the tool and a modified case in your caliber
 
and it is best to get a comparator insert in your caliber
 
so you can take the measurement on the ogive since bullet tip measurements are less accurate.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 21:50
pyro6999 View Drop Down
Optics Retard
Optics Retard
Avatar
OT TITAN

Joined: December/22/2006
Location: North Dakota
Status: Offline
Points: 22024
Originally posted by Roy Finn Roy Finn wrote:

Make up a dummy round to determine the length. Depending on bullet weight and shape this measurement will vary quite a bit and will depend on how long a throat your chamber has. All this won't matter much though if your magazine won't handle the length of a round that is set up for max COAL. It's probably best to make up a dummy round with the bullet you plan to use by partially sizing the neck of your brass so that the grip on the bullet after you seat it will move easily when you chamber the round (no powder or primer) and push the bolt forward and closed. That will push the bullet into the case and will tell you what the max overall length will be with the bullet seated into the lands. When you remove the dummy round you can measure it with a caliper and set up your seating die accordingly. Me personally, I like to set up my reloads with the bullet "kissing" the lands so long as the magizine length will allow it.


thats what i do as wellExcellent
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 22:33
prkrgrp View Drop Down
Optics GrassHopper
Optics GrassHopper


Joined: October/16/2010
Location: lake oswego ore
Status: Offline
Points: 16
Originally posted by pyro6999 pyro6999 wrote:

Originally posted by Roy Finn Roy Finn wrote:

Make up a dummy round to determine the length. Depending on bullet weight and shape this measurement will vary quite a bit and will depend on how long a throat your chamber has. All this won't matter much though if your magazine won't handle the length of a round that is set up for max COAL. It's probably best to make up a dummy round with the bullet you plan to use by partially sizing the neck of your brass so that the grip on the bullet after you seat it will move easily when you chamber the round (no powder or primer) and push the bolt forward and closed. That will push the bullet into the case and will tell you what the max overall length will be with the bullet seated into the lands. When you remove the dummy round you can measure it with a caliper and set up your seating die accordingly. Me personally, I like to set up my reloads with the bullet "kissing" the lands so long as the magizine length will allow it.


thats what i do as wellExcellent
ok i took a new case with 60 grain vmax just started it in the press and then chambered the round, twice, length was 2.452, my lymans spec book shows 2.350 max,  how far back from the 2.452 would you suggest seating the bullet?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 22:43
pyro6999 View Drop Down
Optics Retard
Optics Retard
Avatar
OT TITAN

Joined: December/22/2006
Location: North Dakota
Status: Offline
Points: 22024
does 2.452 fit in you magazine???

2.33 is what mine is set at.


Edited by pyro6999 - October/16/2010 at 22:44
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 22:45
prkrgrp View Drop Down
Optics GrassHopper
Optics GrassHopper


Joined: October/16/2010
Location: lake oswego ore
Status: Offline
Points: 16
yes  2.452 is a good fit with new brass
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 22:47
pyro6999 View Drop Down
Optics Retard
Optics Retard
Avatar
OT TITAN

Joined: December/22/2006
Location: North Dakota
Status: Offline
Points: 22024
and your bolt closes completely at 2.452???
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 22:49
prkrgrp View Drop Down
Optics GrassHopper
Optics GrassHopper


Joined: October/16/2010
Location: lake oswego ore
Status: Offline
Points: 16
Originally posted by pyro6999 pyro6999 wrote:

and your bolt closes completely at 2.452???
yes no problem  it feels smooth and a good fit
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 22:50
pyro6999 View Drop Down
Optics Retard
Optics Retard
Avatar
OT TITAN

Joined: December/22/2006
Location: North Dakota
Status: Offline
Points: 22024
is this a custom built rifle???
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 22:51
prkrgrp View Drop Down
Optics GrassHopper
Optics GrassHopper


Joined: October/16/2010
Location: lake oswego ore
Status: Offline
Points: 16
yes i bought it from a guy who used it for match shooting, i just like to shoot coyotes with it
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 22:52
pyro6999 View Drop Down
Optics Retard
Optics Retard
Avatar
OT TITAN

Joined: December/22/2006
Location: North Dakota
Status: Offline
Points: 22024
ah now we are making sense. go ahead and load em up as long as you want. that rifle is made to shoot long bullets. probably built on a long action rem700 long action too.

Edited by pyro6999 - October/17/2010 at 08:16
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/16/2010 at 23:38
Roy Finn View Drop Down
MODERATOR
MODERATOR
Avatar
Steiner Junkie

Joined: April/05/2004
Location: United States
Status: Offline
Points: 4856
I doubt that very much, pyro.
 
Don't concern yourself with what the max. COAL in the reloading manuals. If it fits in the magazine with enough room to slide a dime in between the bullet nose and the front of the magazine box you're good to go.


Edited by Roy Finn - October/16/2010 at 23:39
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/17/2010 at 08:16
pyro6999 View Drop Down
Optics Retard
Optics Retard
Avatar
OT TITAN

Joined: December/22/2006
Location: North Dakota
Status: Offline
Points: 22024
Originally posted by Roy Finn Roy Finn wrote:

I doubt that very much, pyro.
 
Don't concern yourself with what the max. COAL in the reloading manuals. If it fits in the magazine with enough room to slide a dime in between the bullet nose and the front of the magazine box you're good to go.

doubt what?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/17/2010 at 09:49
Roy Finn View Drop Down
MODERATOR
MODERATOR
Avatar
Steiner Junkie

Joined: April/05/2004
Location: United States
Status: Offline
Points: 4856

Doubt that a 22-250 would be built on a long action.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/17/2010 at 09:57
pyro6999 View Drop Down
Optics Retard
Optics Retard
Avatar
OT TITAN

Joined: December/22/2006
Location: North Dakota
Status: Offline
Points: 22024
really? i bet it would be if it was a competition rifle like he says it is. thats how those guys make up for the long heavy bullets they like to use.

look at the 6.5x55, its the same story. i know a few guys that do that with the .257 roberts and the 7x57 as well. its not that uncommon for people to build rifles that are normally based on a short action and use a long action rifle platform. that way they can use those berger type bullets and seat them way out and still fit in the magazine.


Edited by pyro6999 - October/17/2010 at 10:00
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/17/2010 at 11:20
sakomato View Drop Down
Optics Master
Optics Master
Avatar

Joined: February/28/2008
Location: Houston
Status: Offline
Points: 1085
If it is a custom rifle then there are 2 other things he needs to find out.
 
1.  Was it reamed with a tight neck?  If it is a benchrest rebarrel then they generally do.  The brass may have to be neck turned in order to chamber.  Way to tell:
     a.  Measure the outside diameter of the neck on a loaded round
     b.  Measure the outside diameter of the neck on a fired unsized case
If the loaded round dimension is not .003" LARGER then neck turning is a consideration, if the loaded round dimension is less than the fired unsized case neck, then outside neck turning is mandatory
 
2.  What is the barrel twist?  If the previous owner wanted to shoot the heavier bullets then he would have put a faster twist on the barrel and that will greatly effect what bullet the rifle will shoot.
 
Lots of questions, need more info on the rifle, magazine length and throating.
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Similar Threads: "chamber lenght"
Subject Author Forum Replies Last Post
Neck sizing or full lenght ??? shooter4 Reloading & Ballistics 52
PROPER CHAMBER DEPTH ? hot30 Firearms 8 10/7/2007 7:22:03 PM
.22LR Chambers Graysteel Firearms 5 10/21/2007 12:06:06 AM
Measuring Chamber OAL Dolphin Firearms 33
Chamber Cleaning orkboy300 Shooting 7


This page was generated in 0.266 seconds.