Firearm & Gun Forum - FireArmsTalk.com > Gear & Accessories > Ammunition & Reloading > Question about decapping .40 cal brass

Reply
 
LinkBack Thread Tools Display Modes
Old 09-30-2010, 09:35 PM   #1
Feedback Score: 0 reviews
 
Join Date: Sep 2010
Location: Northern Virginia,Virginia
Posts: 16
Default Question about decapping .40 cal brass

hello. I am in the process of decapping .40 cal brass and I seem to be having trouble. I have to cycle the press twice on 90% of the cases in order to get the old primer to pop out. I am new to this and perhaps I dont have the resizer seated propperly. I have adjusted it three times according to the nstructions and I am afraid that if i get it to tight, I will snap the pin. I am using a single stage RCBS. Any thoughts will be appreciated.



__________________
LMS_Tactical is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 09-30-2010, 10:43 PM   #2
Feedback Score: 0 reviews
 
hunter Joe's Avatar
 
Join Date: Feb 2008
Posts: 2,413
Liked 1 Times on 1 Posts

Default

What brand brass are you using? By the way, welcome to the forum.



__________________

God, Family, Guns, in that order.

hunter Joe is offline  
 
Reply With Quote
Old 09-30-2010, 11:08 PM   #3
Moderator
FTF_MODERATOR.png
Feedback Score: 1 reviews
 
robocop10mm's Avatar
 
Join Date: Jul 2007
Location: Austin,Texas, by God!!
Posts: 9,947
Liked 2613 Times on 1374 Posts
Likes Given: 204

Default

I have this happen more often with .40 brass than any other. I am not sure what the cause is. Make sure your sizing die is set so it nearly touches the shel holder. Set the die, size a case with out a primer in it. Adjust the decapping rod deep enough the pin lock nut (or shoulder on the new style die) just touches the inside baase of the case. Back the decapping rod 1-11/2 turns (or retract the rod about 1/16" on the newer dies)

__________________

In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball

robocop10mm is offline  
 
Reply With Quote
Old 10-01-2010, 03:40 AM   #4
Feedback Score: 0 reviews
 
Join Date: Sep 2010
Location: Northern Virginia,Virginia
Posts: 16
Default

Quote:
Originally Posted by hunter Joe View Post
What brand brass are you using? By the way, welcome to the forum.
American Eagle... federal.
__________________
LMS_Tactical is offline  
 
Reply With Quote
Old 10-01-2010, 03:41 AM   #5
Feedback Score: 0 reviews
 
Join Date: Sep 2010
Location: Northern Virginia,Virginia
Posts: 16
Default

Quote:
Originally Posted by robocop10mm View Post
I have this happen more often with .40 brass than any other. I am not sure what the cause is. Make sure your sizing die is set so it nearly touches the shel holder. Set the die, size a case with out a primer in it. Adjust the decapping rod deep enough the pin lock nut (or shoulder on the new style die) just touches the inside baase of the case. Back the decapping rod 1-11/2 turns (or retract the rod about 1/16" on the newer dies)
Thank you for the advice. I will do as you suggest and let you know how that worked out. Much appreciated
__________________
LMS_Tactical is offline  
 
Reply With Quote
Old 10-01-2010, 03:42 AM   #6
Feedback Score: 0 reviews
 
Join Date: Sep 2010
Location: Northern Virginia,Virginia
Posts: 16
Default

Quote:
Originally Posted by hunter Joe View Post
What brand brass are you using? By the way, welcome to the forum.
P.S. Thank you for the warm welcome. I appreciate it. Looking around... it seems to be a great forum. I can't wait to get deeper into it.
__________________
LMS_Tactical is offline  
 
Reply With Quote
Old 10-01-2010, 10:35 AM   #7
Feedback Score: 0 reviews
 
Join Date: Oct 2007
Location: Stafford, Virginia,The state of insanity.
Posts: 14,043
Liked 33 Times on 28 Posts

Default

Quote:
Originally Posted by robocop10mm View Post
I have this happen more often with .40 brass than any other. I am not sure what the cause is. Make sure your sizing die is set so it nearly touches the shel holder. Set the die, size a case with out a primer in it. Adjust the decapping rod deep enough the pin lock nut (or shoulder on the new style die) just touches the inside baase of the case. Back the decapping rod 1-11/2 turns (or retract the rod about 1/16" on the newer dies)
Exactly what I was going to say. Dang you Robo....
__________________
cpttango30 is offline  
 
Reply With Quote
Old 10-01-2010, 11:53 PM   #8
Feedback Score: 0 reviews
 
Join Date: Jul 2010
Location: Tucson,AZ, for now
Posts: 211
Liked 7 Times on 7 Posts

Default

Per Hornady:
Before using your new dies, disassemble and carefully clean
the inside surface of the sizing and seating dies (and the
expander die if a three-die set.)
Inspect all cartridge cases and discard those with cracks,
splits and other visible defects. Wipe cases clean with a soft
cloth to remove grit and other foreign matter which may
scratch the die.
ADJUSTING THE SIZE DIE
To adjust the expander/decap assembly:
1. Loosen the spindle lock.
2. Adjust the spindle so approximately 3/16"
of the decap pin is below the end of the die
(Ed: insert empty case in shell holder/shellplate. Raise ram so case enters die. Wiggle the decapping stem if it doesn't enter the flash hole. Primer should pop out. If not, lower ram and turn the decapping stem in until primer is ejected. Raise ram and lock the decapping stem and the resizing die.)
3. Tighten the spindle lock. If not tightened sufficiently, the spindle will
back out the top of the die when deprimed, or it will pull out of the die
when the ram is lowered. If the spindle is adjusted too high, the primer
may not be expelled and a new primer cannot be seated.
To adjust the full-length size die, follow these steps:
1. Raise the press ram to highest position without camming over.
2. Thread the full-length die into the press until the base touches the
shell holder head.
3. Tighten the lock ring against the press and tighten the set screw
with the allen wrench.
4. Adjust the expander/decap assembly.
3/16"
This applies to all normal sizing dies. I have heard that some people sharpeded the decapper pin tip to improve things. I would have expected to flatten the tip to improve things.

__________________
noylj is offline  
 
Reply With Quote
Old 10-02-2010, 05:13 PM   #9
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Overkill0084's Avatar
 
Join Date: Sep 2010
Location: Weber County, Utah
Posts: 4,127
Liked 2593 Times on 1298 Posts
Likes Given: 248

Default

Quote:
Originally Posted by noylj View Post
Per Hornady:
Before using your new dies, disassemble and carefully clean
the inside surface of the sizing and seating dies (and the
expander die if a three-die set.)
Inspect all cartridge cases and discard those with cracks,
splits and other visible defects. Wipe cases clean with a soft
cloth to remove grit and other foreign matter which may
scratch the die.
ADJUSTING THE SIZE DIE
To adjust the expander/decap assembly:
1. Loosen the spindle lock.
2. Adjust the spindle so approximately 3/16"
of the decap pin is below the end of the die
(Ed: insert empty case in shell holder/shellplate. Raise ram so case enters die. Wiggle the decapping stem if it doesn't enter the flash hole. Primer should pop out. If not, lower ram and turn the decapping stem in until primer is ejected. Raise ram and lock the decapping stem and the resizing die.)
3. Tighten the spindle lock. If not tightened sufficiently, the spindle will
back out the top of the die when deprimed, or it will pull out of the die
when the ram is lowered. If the spindle is adjusted too high, the primer
may not be expelled and a new primer cannot be seated.
To adjust the full-length size die, follow these steps:
1. Raise the press ram to highest position without camming over.
2. Thread the full-length die into the press until the base touches the
shell holder head.
3. Tighten the lock ring against the press and tighten the set screw
with the allen wrench.
4. Adjust the expander/decap assembly.
3/16"
This applies to all normal sizing dies. I have heard that some people sharpeded the decapper pin tip to improve things. I would have expected to flatten the tip to improve things.
+1

Being a newby myself, I figure the best way to avoid issues is to follow the instructions closely. Using the RCBS version of the above text, I've never had any issues decapping .40 S&W.
__________________
Cheers,
Greg
USAF Retired
NRA Life Member

"If you put the federal government in charge of the Sahara Desert, in 5 years there'd be a shortage of sand."
Milton Friedman
Overkill0084 is offline  
 
Reply With Quote
Old 10-02-2010, 05:21 PM   #10
Feedback Score: 0 reviews
 
Rick1967's Avatar
 
Join Date: Feb 2010
Location: Clifton,Colorado
Posts: 4,031
Liked 1687 Times on 951 Posts
Likes Given: 1131

Default

I reload 40 S&W in large quantites. I have found that if I start out doing several hundred I will have to retighten the decapping pin. It will loosen up inside the die. I use RCBS dies and a RCBS press. If your pin is not tight enough it will do as you describe.



__________________

Romans 1:16 I am not ashamed of the gospel, because it is the power of God for the salvation of everyone who believes: first for the Jew, then for the Gentile.

Rick1967 is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
AR 15 brass question tbone8705 Ammunition & Reloading 3 12-30-2008 02:38 PM
2000 45 acp brass, all brass below was sold frank_1947 Sponsor Display 1 10-08-2008 08:11 PM