Originally Posted by
gaijin
Slide velocity is primarily controlled by MS and amount of firing pin radius, in addition to recoil spring weight/rating.
The heavier the recoil spring weight, the more your gun “dips” as slide goes back into battery.
The ideal is having a gun that shoots as flat as possible.
With Minor/range loads I use a 9/10# recoil spring, a “Flat Bottom Firing Pin Stop” (reduces mechanical advantage of slide cocking hammer- and was JMBs original design) with a 19# MS.
The Recoil Spring in a 1911 is more accurately a “return to battery” spring.
You need enough RS to strip rd from mag and ensure slide returns to battery.
The amount of magazine spring tension, how tight slide to frame fit and barrel fit/lock up are determining factors of necessary RS weight.
If I’m shooting +P carry ammo exclusively I’ll run a 12# RS and 21#MS to ensure positive function.
A 2# trigger on a carry gun are less a necessity than on a range/game gun for me.
FWIW, nearly all production/semi production guns (1911s) come oversprung.
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