Are CZ 75 OEM mag springs weak?

[Metal Wonder Nine Guy]

Had a buddy who says that the OEM CZ-75 magazine springs wear out fairly quick, so he usually replaces those springs with Wolff extra power springs. Is this true?

[Earl Keese]

Most of the people that make these claims don't shoot enough to know.

[larryflew]

I do the wolff springs in my plus 2 mags I use for comp but have 15/16 rounders with many years and still original springs.  Don't think I would even need to do it with the plus 2's but I still do.

[George16]

Most of the people that make these claims don't shoot enough to know.

So true.

[M1A4ME]

I've bought multiple CZ75 Compacts and P01s.  No issues with the factory magazine springs.

I've bought multiple mecgar 16, 17, and 19 round magazines.  No issues.

But, I did buy a new CZ75B in .40 S&W and wanted some 14 round (standard 12 round with a +2 base on them) mecgar mags and ordered some.  They would just barely push the slide lock up far enough to catch the slide.  I do mean just barely.  Fearing eventual slide notch or slide stop damage from the small contact area I ordered some Wolf +10% springs and installed them.  With the new springs I got full upwards travel of the slide stop into the notch in the slide.  No idea why those 3 or 4 new magazines were different than all the other CZ and mecgar branded mags. I've bought, but the Wolf +10% springs fixed it.

[E30Eric]

Neither of the factory mags for my sp01 would feed properly and now have grams followers, wolf Springs, and Springer extensions and work just fine.

[Sanity Challenged]

I have had 9 18-round magazines in heavy rotation.  In the past, I'd have to change out the mag springs at least once, sometimes twice a season when the springs got worn out and I started getting failures to strip the first round from a magazine.  It only happened during reloads, when my slide would (more often than not) auto-forward when I slammed the magazine in.  Same thing happened with either OEM or +10% springs.

I eventually figured out that I shouldn't be mixing springs/mags for high-cap games and low-cap games.  Using the same springs for games that allowed me to load full capacity was wearing out the springs to the point of causing the failures when loading to only 10 rounds.  Once I figured that out and started using one set of springs for only low-cap games, I haven't had any failures, and have gone 2 full years without having to replace.

I've now added a few new guns to the stable, and with them some new 19 and 23-round magazines, so I have completely separate mags for different games.  I will probably replace springs once a year or every other year just for sanity, and will probably just replace the springs in the low-cap mags, rotating those springs down to the high-cap mags.

So, long story short, if you're a heavy shooter, and you regularly load to different capacities, then using the same mags for different capacities will cause you to wear out springs and experience failures faster.  Loading to a consistent capacity, or using different mags/springs for difference capacities, will keep your springs working for much longer (years instead of months).