A full list of weapon mastery rolls for each weapon type and tier. With thanks to the Defiance team for helping with the data.
All individual weapons pages also have their own tables
x1.02 Infector Impact and DoT Damage (Rating Mod)
x1.03 Range
x1.04 Infector Impact and DoT Damage (Rating Mod)
x1.06 Range
x0.9 Recoil Per Shot
+15% speed boost for 5 seconds after a full reload
x1.09 Clip Size
x1.06 Infector Impact and DoT Damage (Rating Mod)
x1.09 Range
x0.85 Recoil Per Shot
x1.1 +10% Movement Speed
+30% speed boost for 5 seconds after a full reload
x1.2 -20% Reload while standing still
x1.15 Clip Size
x1.08 Infector Impact and DoT Damage (Rating Mod)
On full reload, reduce EGO Power cooldown by 5 seconds
x1.12 Range
x1.08 Rate of Fire
x0.8 Recoil Per Shot
x0.88 Reload Time
x1.15 +15% Movement Speed
+45% speed boost for 5 seconds after a full reload
x1.3 -30% Reload while standing still
x1.3 Clip Size
x1.05 Infector Bug Damage (Rating Mod)
x1.1 Infector Impact and DoT Damage (Rating Mod)
On full reload, reduce EGO Power cooldown by 10 seconds
x1.15 Range
x1.1 Rate of Fire
x0.75 Recoil Per Shot
x0.85 Reload Time
x1.2 +20% Movement Speed
+50% speed boost for 5 seconds after a full reload
x1.4 -40% Reload while standing still
x1.45 Clip Size
x1.1 Infector Bug Damage (Rating Mod)
x1.12 Infector Impact and DoT Damage (Rating Mod)
On full reload, reduce EGO Power cooldown by 15 seconds
x1.18 Range
x1.12 Rate of Fire
x0.6 Recoil Per Shot
x0.8 Reload Time
Stratotech Defiance 2050 [Source]
3PL9 WDFG DKPR 9LE7 P7Y7 [Redeem]