If Xenophage gets its damage increased against bosses by 50% it'd be the go to weapon for all activities except maybe the Sanctified Mind (depending on how bad the range penalty is). The only thing that'd beat it would be an Izanagi * 4 shot followed by Love & Death. All of these tests were done on Riven with a solo hunter without using any buff, debuff, or faster reload mod/ exotic. I did use the hunter dodge for the first reload where applicable (but I did find that it usually didn't change dps that much). Most of these weapons were tested on October 1st and then the exotics were tested as they came out. Primary Ammo Bad Ju-ju 55,000 Trinity Ghoul 58,000 Ace of Spades 65,000 Jade-R 70,000 Last Word 72,000 Graviton Lance 73,000 Sunshot 74,000 (didn't get a good run) Skyburners zoom 75,000 Mida-multitool 77,000 Lumina 77,000 SUROS Spin up 81,000 Thorn 82,000 Crimson 83,000 Le Monarque 83,000 HardL nobounce 84,000 Fighting Lion 86,000 Vigilance Wing 88,000 Hush 100,000 Huckleberry 101,000 Wish Ender 109,000 (Bonus damage on Riven) Polaris Lance 110,000 Rat King 120,000 Riskrunner perk 133,000 Cerebus +1 Cat 140,000 Sweet Business 145,000 Malfeasance 155,000 (Bonus damage on Riven) Outbreak Perf 150,000 Cerebus + 1 162,000 Tarrabah 231,000 Sturm and Drang 369,000 (Yeah good luck with that in a 6 man group) Special Chaperone 101,000 Revoker 107,000 Prometheus 120,000 Wavesplitter 165,000 (4 second of perk) Lord Wolf perk 168,000 (extremely close, possibly even higher on crit) Arbalest 203,000 Izanagi mas/p 204,000 (possibly 250 if I got the last shot in) Borealis perk 208,000 Eriana's Vow 222,000 Jotuun 226,000 (at least) Cold Heart 229,000 Telesto 250,000 Merciless 287,000 (ran out of ammo) Power Tractor 21,000 (.....?) Wardcliff 81,000 Worldline Zero 100,000 (died to corrosive aura) Black Talon 150,000 Anarchy 168,000 (constantly shooting) Acrius 175,000 (calculated out not demonstrated due to difficulty, 17,000 a shot) D.A.R.C.I. 193,000 Queenbreaker Ma 233,000 Sleeper 242,000 Thunderlord 251,000 Leviathans's Br 267,000 21% Delerium 272,496 Deathbringer 270,000 (45,000 per rocket directly in mouth, 47,000 if you hit the ceiling) Whisper 275,000 (probably closer to 300,000) Xenophage 285,000 Colony 288,000 (ran out of ammo) TwoTailed Fox 321,000 1k voices 339,000 Edge Transit 365,000 (with spike nades) Prospector 383,000 Truth 388,000 Love & Death 423,000 Izanagi & L&D 469,000 Izanagi & Wend ~350,000 Bonus Cluster bomb rocket. 54,000 / rocket Celectial Nighthawk 227,000 Loaded question 37,000 / resovoir burst. 243,000 solo. Can get 10 shots Luna's Howl 80,000 Not Forgotten 76,000