I agree with Conelrad, you do not want any sharp edges on the tip and the sharp edges can lead to chipping of the firing pin as well and from the picture you have some sharp edges that could pierce a primer.
Loonwulf, regarding firing pin protrusion, the shoulders on the firing pin are designed as a primary stop in a lot of military rifles and a secondary stop in others and depending on the rifle design. It can serve as part of the safety mechanism such as the Mauser 98 design as the firing pin is designed with a safety shoulder so that it cannot reach the primer when the rifle is on safe.
Mauser firing pin protrusion that use locking keys on the rear can be adjusted by a) tip length and b) the shoulder of the firing pin in firing position using a firing pin protrusion gage. It is quite common for a new replacement to have to have the tip dressed and the shoulder adjusted. A field expedient method is to use a power drill and chuck the firing pin in it (be sure to center it)--you can then use emery cloth with a light touch to dress the tip and shoulder using the drill as an improvised lathe. Real lathes work even better but you can also do it manually with abrasive means (files, stones, emery cloth) depending on your touch with such.
The locking keys at the back of the Mauser 93-98 series and the 1917/p14 series also play a part as you want the firing pin shoulder to just reach the interior bolt stop rather than having excessive play and slamming into the bolt firing pin stop surface. Firing pins with worn keys should usually be replaced for that reason as things can happen such as breaking the locking keys or even the firing pin shaft etc.
Some use a threaded firing pin and the protrusion is adjusted by the shoulder, firing pin tip, and the thread of the firing pin. These are a bit fiddly to fit but the process is the same. Currently, I am having fun with fitting a Mauser 91 replacement firing pin that is out of spec (new design replacement) that also has a too soft tip (the tips and shaft should really not bend). If that firing pin was a Mauser 93-98 design, a too soft firing pin and firing pin shoulders/keys could cause problems such as excessive protrusion if not addressed.
Firing pin polishing in general along with thorough cleaning of the bolt channel can also smooth an action of an old milsurp.
