Very approximately I do get about 10% Snapshot on level 99 Gastraphetes. I'm testing it semi-afk on the test server, but I can't force 0 damage with Gastraphetes so there are limits to how well I can automate the process. Currently I am at 82.5% expected delay with like 20 shots and 5/5 merits. I can expand the sample size and get a 90% Snapshot test case with Illapa tonight on the real servers.
Edit: I can't really re-do it because I don't know what SE's assumptions are, but keep in mind that the below numbers do not include the forced delay between finishing one shot and starting the next. The higher this delay is assumed to be, the more low-delay ranged weapons are hurt. Furthermore, because this delay is not affected by snapshot, this means that higher delay weapons will benefit minorly more from snapshot. I would be unsurprised to learn it is possible to break 60% Snapshot currently. Regardless, I still feel most of the below conclusions hold true.
As far as reversing the base damages . . . I'm not sure. With Achi ammo:
Code:
Armageddon - D103, 582 delay :: 36.7 DPS without fSTR
Annihilator - D105, 582 delay :: 36.9 DPS without fSTR
Death Penalty - D119, 480 delay :: 46.5 DPS without fSTR
Gastraphetes - D93, 432 delay :: 30.1 DPS without fSTR
Illapa - D135, 432 delay :: 36.0 DPS without fSTR
Armageddon and Annihilator look intentional, as they follow approximately the same relic/empyrean relationship seen in other weapon types. The DPS is a little higher than the other empyrean/relic combinations, but that's because it's a ranged weapon. Also, there is less of a gap between the Relic/Empyrean weapon than in other combinations (0.5% instead of 2%).
Flipping the base damages between Death Penalty and Gastraphetes don't even come close to compensating for the massive base damage increases. Mythics typically have about 1.5% lower DPS than the same-class Empyreans, which means that Death Penalty's base damage should have been 36. Not joking. In order to lower it down below Armageddon, they'd need to decrease its base damage to 36.
Their real fuckup as far as this math goes was adding Achi bullet. Using Titanium ammo:
Code:
Armageddon - D103, 582 delay :: 28.7 DPS without fSTR
Annihilator - D105, 582 delay :: 28.9 DPS without fSTR
Death Penalty - D119, 480 delay :: 36.8 DPS without fSTR
Gastraphetes - D93, 432 delay :: 26.3 DPS without fSTR
Illapa - D135, 432 delay :: 32.1 DPS without fSTR
Death Penalty - D64, 480 delay :: 29.9 DPS without fSTR (Level 99)
Apart from Death Penalty, which is still the clear outlier, this is much more even. I would have expected Gastra to be D116. Death Penalty should have been D51. Giving it D93 would have pushed the DPS up to 33.5, higher than expected. To be clear, this means that a level 99 Death Penalty without an upgrade is already higher DPS than any of the new guns even without using Plasm ammo, minus the fact that you can't hit anything because you have no massive marksmanship skill boost.
It's possible that they reversed Gastra and DP's base damage and exacerbated the issue, but DP is a big problem either way.
Other large problems are Awilda's Gun and the OA2-4 gun. Awilda's Gun is hurt somewhat terribly by the post-shooting delay, but the OA2-4 gun is not and remains a beast.
Code:
Titanium:
Anwilda's Gun - D5, 210 delay :: 51.4 DPS
OA2-4 Gun - D21, 660 delay, 1.9 shots/shot :: 33.9 DPS <-- with massively higher TP gain than any other gun
Achi:
Anwilda's Gun - D5, 210 delay :: 73.7 DPS
OA2-4 Gun - D21, 660 delay, 1.9 shots/shot :: 47.3 DPS <-- with massively higher TP gain than any other gun