1911Forum banner

Gi Champ???

757 Views 3 Replies 3 Participants Last post by  kittyhawk
Hi I am looking at a sa champion and have a question, what is a fully supported barrel. it has a bull barrel with a different recol spring, can one change spring weights or are you stuck with the factory setup. thanks
1 - 4 of 4 Posts

· Registered
Joined
·
132 Posts
Fully supported chamber means that the chamber entirely supports the powder area of the cartride/casing, unsupported would mean that part of the powder area of the casing is exposed, and is generally not considered a good idea because the casing can expand in this area, weakening the chamber AND/OR cause a blowout of the chamber, or worse. Glock .40's are known for this they say, but tons of police departments have been using these pistols for years without problem. Most people never experience a problem if they keep the ammo below the +p/+p+ specs. Most of the time a unsupported chamber is done to help feeding issues in auto's. You results may vary!

-- O. Jeremy Miles
 

· Premium Member
Joined
·
3,543 Posts
Mr. Miles is correct, but I'll say I've fired a good bit of hot ammunition - Double Tap, +P and .45 Super - through my 1911's with "unsupported" chambers, and have seen zero case bulge. .45 ACP is such relatively low pressure stuff, that even the very hot iterations seem not to have pressure enough to blow out the cartridge case. I wouldn't worry about it a bit. As for the recoil spring setup on the Champion, the easiest swap I've read about was the use of a Kimber Pro series guide rod and 22lb spring, with the stock Champion spring plug. Thus far, my GI Champ still retains her stock setup, which seems to keep on performing flawlessly for about 600 rds now. When I hit 1000 rnds, I might try the Kimber part.
 
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top