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  #1  
Old 01-21-2020, 11:29 AM
SIGAddict SIGAddict is online now
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Barrel fit in STI Trojan

Hi, I have a stock STI Trojan that is shooting perfectly well and has no issues, but as I was playing with my other 1911s, mostly to improve reliability, I tried putting a 0.200” slide stop in the Trojan, just out of curiosity. The pin fits fine in the slide and link, but does not allow the slide to come forward enough to engage the thumb safety. The stock STI slide stop pin is 0.197” though clearly the slide hole and the link can accommodate a 0.200” pin. My question is whether it is better to have a .200” or 0.197” slide stop and whether the fitting of the original barrel was inadequate and they simply put in a pin at the factory that made it work?
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Old 01-21-2020, 11:58 AM
Alland Alland is offline
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It sounds like the barrel was properly fit to the .197 slide stop at the factory. I would leave it alone. When things eventually wear in you will have the option of the .200 slide stop to tighten it up.
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Old 01-21-2020, 02:03 PM
log man log man is offline
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Originally Posted by Alland View Post
It sounds like the barrel was properly fit to the .197 slide stop at the factory. I would leave it alone. When things eventually wear in you will have the option of the .200 slide stop to tighten it up.
Amen.

LOG
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  #4  
Old 01-21-2020, 03:32 PM
SIGAddict SIGAddict is online now
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Originally Posted by Alland View Post
It sounds like the barrel was properly fit to the .197 slide stop at the factory. I would leave it alone. When things eventually wear in you will have the option of the .200 slide stop to tighten it up.
Sounds good, that’s the info I was looking for. So those 1911s that already use a 0.200” from the start may require a bigger pin as they wear? Like the EGW .203”?
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Old 01-21-2020, 07:45 PM
log man log man is offline
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Originally Posted by SIGAddict View Post
Sounds good, that’s the info I was looking for. So those 1911s that already use a 0.200” from the start may require a bigger pin as they wear? Like the EGW .203”?
Yes perhaps. A problem with going over the .200 is the link hole is oversize to allow the barrel to stay up in the slide until the bullet has exited. This slop allows the link to go .050" past center when in battery without disturbing the barrel's position, which means the barrel can move a total of .100"before the link runs out of room. A .203" pin will not allow this without further fitting of the link. So best to stay smaller than .200" unless needed.

LOG
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Old 01-21-2020, 08:08 PM
SIGAddict SIGAddict is online now
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Originally Posted by log man View Post
Yes perhaps. A problem with going over the .200 is the link hole is oversize to allow the barrel to stay up in the slide until the bullet has exited. This slop allows the link to go .050" past center when in battery without disturbing the barrel's position, which means the barrel can move a total of .100"before the link runs out of room. A .203" pin will not allow this without further fitting of the link. So best to stay smaller than .200" unless needed.



LOG


My Dan Wesson CBOB came with a 0.200” slide stop pin from the factory (I think they got it from EGW), that’s why I am wondering what would need to be done if it got looser as I shoot it a lot; it’s my favorite gun...


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  #7  
Old 01-21-2020, 08:29 PM
log man log man is offline
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Originally Posted by SIGAddict View Post
My Dan Wesson CBOB came with a 0.200” slide stop pin from the factory (I think they got it from EGW), that’s why I am wondering what would need to be done if it got looser as I shoot it a lot; it’s my favorite gun...


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Very little wear happens once the parts seat. A new barrel may well be needed before a bigger slide stop pin. Barrels are like tires on your vehicle.

LOG
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Old 01-21-2020, 09:24 PM
GUNSnHOGS GUNSnHOGS is offline
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Originally Posted by log man View Post
Yes perhaps. A problem with going over the .200 is the link hole is oversize to allow the barrel to stay up in the slide until the bullet has exited. This slop allows the link to go .050" past center when in battery without disturbing the barrel's position, which means the barrel can move a total of .100"before the link runs out of room.

LOG
LOG:

I have read this statement before, concerning the barrel moving .100" before link down, and was hoping you could elaborate on a suitable method for checking this......especially for a beginning enthusiast.....

I noticed this video by Mr. Kelly, and wondered if this method would be reliable and acceptable?

https://youtu.be/2eHpGwx-JvE

Thank you!
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  #9  
Old 01-21-2020, 09:26 PM
SIGAddict SIGAddict is online now
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Originally Posted by log man View Post
Very little wear happens once the parts seat. A new barrel may well be needed before a bigger slide stop pin. Barrels are like tires on your vehicle.



LOG


Awesome, thanks for the info. I would imagine it takes quite a few rounds to shoot a 45ACP barrel...


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