Talk:Affinity/@comment-77.21.1.161-20170112021117/@comment-82.1.56.6-20170314095835

I just wondered the same thing and came here to see why.

I killed everything in the level with my maxed primary to rank up a new frame and I also have rank 29 secondary on. Nothing else, no pet or melee. I run Draco survival to 15 mins.

My secondary only got 1k xp while my frame got 80k, afaik this means my maxed primary also got 80k but nowt comes up because its maxed with no lens, so thats wasted xp (please correct me if Im wrong here)

The wiki states:

"Kill an enemy with a weapon. Half of the Affinity goes to the Warframe and half to the killing weapon."

This is why our maxed weapons are not giving other weapons xp.

As mentioned above, do spys to upgrade weapons you hate.

I go to Kappa on Sedna because its easy grineer and awards top tier xp for completion. I take only the weapon I want to level and hey presto! your weapon is being leveled without (necessarily) firing a shot off. It takes me 8 missions all flawlessly done to fully rank a weapon, without boosters etc. If you mess it up, it can take a couple more, or more depending on how bad you are at spys.