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I always thought it interesting that the Hi-Power uses a 32 lb mainspring.The "Standard" for a 5" 1911 in .45acp using "mil-spec" 230 grain ball ammo is a 16# recoil spring and a 23# mainspring,, and that is what Colt specifies for their pistols.
The original Browning specs called for a 14# recoil, but back in those days the ammo was a bit lighter.
Some companies run a bit heavier on the recoil spring to ensure positive feeding, in more tightly-fitted guns.
For example; Dan Wesson's are fitted much tighter than Colts, so they run an 18# recoil, but only a 19# mainspring.
The lighter mainspring also gives a bit lighter trigger feel.
For lighter target loads, like a 200 grain SWC with smaller powder charges, a 14# recoil spring is all you need.
Some guys using real light loads for bullseye shooting are running 12# springs.
The debate is endless, but for a "range/plinking" gun a buffer is nice.