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  #1  
Old 10-22-2011, 11:10 AM
Tommytman Tommytman is offline
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.45 ACP throat job unsupported case




Here is a pic of an old throat job that was done for my officers acp. Is there too much unsupported case? I read that 0.25-0.26 inches measured from the case head to where the support begins is acceptable. If I measure from the case head to where the suport starts in the barrel pictured I get 0.26 inches.
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  #2  
Old 10-22-2011, 11:17 AM
bae125 bae125 is offline
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There was a recent thread on this somewhere, something about a .45 Auto Euro barrel having a short chamber and not fully supporting the case. All in all, the discussion ended with the unsupported part of the case not being an issue.

Have you seen any evidence this is a problem, like bulged cases etc...?
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  #3  
Old 10-22-2011, 11:42 AM
Tommytman Tommytman is offline
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No bulged cases at all. I just wanted to ask to be sure. Thanks
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  #4  
Old 10-22-2011, 01:10 PM
Johnny handgun Johnny handgun is offline
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Regardless of what anyone's opinion is, watch those cases because therein lies reality.
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  #5  
Old 10-22-2011, 01:16 PM
Tommytman Tommytman is offline
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Yes, like I said I have checked the brass and there are no bulges or anything approaching a small bulge or expanded brass. Rather not have to get a new barrel fit if it's not required.
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  #6  
Old 10-22-2011, 01:19 PM
emptymag emptymag is offline
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Quote:
Originally Posted by Tommytman View Post
No bulged cases at all. I just wanted to ask to be sure. Thanks
Yours appears to be typical, and well within 'acceptable' for a .45 ACP.
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  #7  
Old 10-22-2011, 04:08 PM
GT40DOC GT40DOC is offline
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The 45ACP round is a low pressure round compared to many other calibers. I would not expect you to have problems.
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  #8  
Old 10-22-2011, 04:27 PM
BBBBill BBBBill is offline
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http://forums.1911forum.com/showthre...supported+case
See post #2
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  #9  
Old 10-22-2011, 05:32 PM
Tommytman Tommytman is offline
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Quote:
Originally Posted by BBBBill View Post

So based on the link I am out of the spec range......I will have 0.26 inch plus that extra amount which I can measure and assume is related to headspace. I will measure and post back

Last edited by Tommytman; 10-22-2011 at 06:28 PM.
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  #10  
Old 10-22-2011, 06:30 PM
Tommytman Tommytman is offline
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The total measurement I have is :0.26+ about 0.01 to 0.015. So my total is 0.275 putting me about 0.015 over the max.
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  #11  
Old 10-22-2011, 06:35 PM
log man log man is offline
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Well, yes......bet it feeds pretty smooth.

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  #12  
Old 10-22-2011, 09:02 PM
Tommytman Tommytman is offline
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Originally Posted by log man View Post
Well, yes......bet it feeds pretty smooth.

LOG
Yep it feeds well. My guess is that's why 'He' went a bit too far....so it would feed well.....I don't think I should worry too much about 0.015 inch
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  #13  
Old 10-25-2011, 11:44 PM
shooter1201 shooter1201 is offline
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This is all well and good, but I specifically asked about RAMPED barrels. I have MORE feeding issues with ramped 1911 barrels than I ever had with traditional 1911 barrels.
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  #14  
Old 10-27-2011, 10:53 AM
shooter1201 shooter1201 is offline
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delete
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  #15  
Old 10-27-2011, 11:14 AM
log man log man is offline
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Quote:
Originally Posted by shooter1201 View Post
This is all well and good, but I specifically asked about RAMPED barrels. I have MORE feeding issues with ramped 1911 barrels than I ever had with traditional 1911 barrels.
Odd your first post in this thread admonishes for not relating to your question?
The 45ACP does feed better with a non-ramp barrel. Unsupported case support also needs to be .250" to .260".

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  #16  
Old 10-27-2011, 11:21 AM
OnTarget1911 OnTarget1911 is offline
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Huh?

Quote:
Originally Posted by shooter1201 View Post
This is all well and good, but I specifically asked about RAMPED barrels. I have MORE feeding issues with ramped 1911 barrels than I ever had with traditional 1911 barrels.
I don't think this thread is about ramped barrels.....

Jess
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  #17  
Old 10-27-2011, 09:47 PM
Tommytman Tommytman is offline
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Sorry I misunderstood your question.
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