I think both of these well-known mods are very interesting but I fear they are only partially compatible.

CaliberX by Earache42 - Fluidfire - odin_ml - Maintainers Brigand231 - WhiskeyRiver2
IMPACT by weijiesen

Is there a solution to load both of them and do not mess my game?

Ahh its possible alright.

Code:

http://www.nexusmods.com/newvegas/mods/62050/?

This here is the IMPACT Compatibility Edition by darthbdaman.
Basically, this is plugin replacement for the original IMPACT and adds a scripted patcher that patches all of your weapons; both vanilla and modded.

By using this mod, you will no longer need to use a huge ass list of esps, instead you just need this and this alone.

If it works with CaliberX, I thank you very much!