Warframe In the Playground

[Thrice Dead Cat]

All things considered, I'd skip Heavy Caliber on this one. Flat damage boosts are MUCH less effective linearly, and the slot is better spent on Rifle Ammo Mutation so that you can actually use it in games longer than three minutes.

I actually disagree. The penalty from Heavy Caliber is practically nonexistent on the amprex. While i want to love Hammershot, unless you're getting red crits, you're likely better off using another damage mod.

I'm still a forma or two shy of my final build, but it's something like:
Heavy Caliber, Serration, Vital Sense, Point Strike
2X elemental mods for viral damage, Shred, and Split Chamber.

Thanks to Red Veil, I have access to large ammo restores, so I tend to avoid the ammo mutations.