Could we see an increase in range on BOTH yes both the reason being is lets take Rangers Short/Long Bow for example which both share 1200 range. So I see no reason why Pistol/Rifle range should not be increased to equal value of 1200 as well. Its a bit silly when you realise a ranger can throw an Axe the same range as as both the Pistol and Rifle.
You can triat for an extra 20% range but that still only brings both up to 1080 range and wastes a valuable trait. Just something I would love to see in the future to help improve the Engi class.