So, firstly this data is probably useless as an absolute comparison as the damage values were gotten with the gun nut feat so the upper damage range is 20% higher on everything, and I also only calculated crit damage for Anatomically-aware scopes, but I was calculating it for my own purposes and figured someone else might find it useful. I'm assuming most people who will be crafting guns will also be getting gun nut anyway. The frame qualities are almost identical, the corsair and reaper were both 69 quality but the harbinger was 67. It appears that an equal quality harbinger and reaper frame might produce the same base damage range
crit%b is critical damage bonus (assumed to be % OVER 100%, so a 150% damage bonus is a 250% increase on a regular damage roll, which might be wrong), crit%c is critical chance, av+crit is the average damage of a regular shot (average damage increased by crit chance times crit bonus, giving average damage assuming random crits), and av crit damage is the average damage a critical hit does, important for people who use aimed shot a lot.
All critical damage calculations are based off a critical already being an extra 100% of a regular damage roll, so a 150% critical damage bonus equals a 250% increase in damage.
Name Caliber Dmg Av crit%b crit%c Av+crit Crit rng Av Crit Dmg
Corsair 7.62mm: 32-96 64 150% 10% 80 80-240 160
Corsair 8.6mm: 37-113 75 150% 10% 93.75 92.5-282.5 187.5
Corsair 12.7mm: 43-129 86 150% 10% 107.5 107.5-322.5 215
Harbinger 8.6mm: 49-89 69 150% 11% 87.975 122.5-222.5 172.5
Harbinger 12.7mm: 56-101 78.5 150% 11% 100.0875 140-252.5 196.25
Reaper 7.62mm: 42-77 59.5 175% 10% 75.86 115.5-211.75 163.625
Reaper 8.6mm: 50-91 70.5 175% 10% 89.88 137.5-250.25 193.875
Corsair 7.62mm: 32-96 64 150% 10% 80 80-240 160
Reaper 7.62mm: 42-77 59.5 175% 10% 75.86 115.5-211.75 163.625
Corsair 8.6mm: 37-113 75 150% 10% 93.75 92.5-282.5 187.5
Harbinger 8.6mm: 49-89 69 150% 11% 87.975 122.5-222.5 172.5
Reaper 8.6mm: 50-91 70.5 175% 10% 89.88 137.5-250.25 193.875
Corsair 12.7mm: 43-129 86 150% 10% 107.5 107.5-322.5 215
Harbinger 12.7mm: 56-101 78.5 150% 11% 100.0875 140-252.5 196.25
I don't know whether it'll help anyone, but I figured someone might appreciate it who knows. Interesting to see some of the patterns emerging, that corsairs always have the highest average damage, but reapers are slightly better for the same caliber.