Originally Posted by RJM
Mainsprings...

For you guys running 1911s in .45+P, .45 Super or 10mm with full loads...what weight mainspring are you running...or just using the stock one..

I have square bottom firing pin stops and 22-24# recoil springs but and still getting quite a bit of ejected case distance...

Thanks...Bob



You load some very hot loads. I was a 20 pound Wilson flat wire recoil spring stock mainspring and do not use a squarebottom firing pin stop. With Underwood 45 Super Ammo I get about 8’ ejected bras. I make sure that the barrel lugs are fitted properly to the lugs in th3 slide, I believe this is a key factor.


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