[536thMP CO]

I have recently purchased a Walther p99, 9mm. I also have two standard 16 round mags. When i have the mag loaded to it full capacity, insert in to gun, it takes a little extra push, it does not slide in and engage the mag catch, say like on my Beretta 92. Also, if you try to drop the mag, again, full 16 rounds mag, you have to really apply some pressure on the mag release, more so than on any other gun i own. These 2 things do not happen when the mag is empty. I was just wondering if it is something inherent with a P99, or not. By the way the gun functions perfectly, has not failed to feed anything.

 

[extremist]

Haven't noticed that on mine. When the mag is full, sure it takes a little more effort to seat the mag with slide closed, but it's the same whether its a 16 or 10 rounder.

Does it seat fully with the slide open, and then feed properly when you close the slide?

Regards,
James

 

[Catbird]

Some of my pistols exhibit this same trait (especially Glocks) - while some don't.  

With 14 or 15 rounds in the magazine, have you tried to smartly rap the magazine base on the heel of your non-dominant hand in an attempt to align the staggered bullets in the magazine (more) properly?  I do this quite a bit; it works for me.

 

[P88]

With some of my ten rounders I have to push a little harder on the release lever. But I hardly ever eject a magazine that is full. I shoot them up first.

P88

 

[NM_P99]

I download all my 16 round mags to 15, to save the springs, and i've never noticed any problems. My 10 rounders work as advertised too.
I use my trigger finger to manipulate the mag-release.