The benefits of 'extra power' mag and recoil springs?

[Major Danger]

As I look at my wonderful P228 on my desk in it's dead sexy C-TAC holster, I can't help but notice the mild wear on it. It has a decidedly noticable wear mark on the slide under the muzzle (right side), some light trigger finish wear, and a few mars on the top of the slide from issed re-holsterings. It got me thinking, what about the springs?

I considered replacing them with factory Sig springs, but Sig has awful customer service and their prices just aren't reasonable. I checked out Wolff springs and they offer 'extra power' mag and recoil springs. +5% and +10% mag springs and 13 to 21lb recoil springs. Who can tell me the benefits of putting a +10% mag spring and 21lb recoil spring in my Sig? Also, what do the percentages mean?

 

[Whirlwind06]

The extra power recoil springs help if you are shooting hot loads out of you pistol. The mags springs can help if you are having feed problems.

I would stick with the standard springs, unless you are having problems. How many rounds have you got through your pistol?

Oh yeah, welcome to THR

 

[The Lone Haranguer]

What is the specified "weight" (i.e., the amount of force needed to compress it to a given length) of the factory recoil spring? (I own a P228 and I don't even know. ) The only possible advantage I can see to a heavier than standard "weight" is that the spring can be used longer before it wears out, i.e., no longer applies enough force. It is more likely, IMO, that using a heavier recoil spring is likely to result in functioning problems, e.g., failures to eject. The same, but probably to a lesser degree, is true of "extra power" magazine springs.

If this gun were mine and I shot it a lot, I would replace springs on a schedule, say every 5-6,000 rounds, and stick with the factory-specified "weight."