Try other pellets first. The barracudas are very heavy, every rifle has a sweet spot in terms of weight of pellet and fit in the barrel that combine to affect overall velocity and as such power. I know my impact shoots express and standard exacts at 11.5fpe. Exact heavy and Hades at 11.7fpe but then loses power with anything heavier.
Anything too heavy needs more oomph, which you don’t have sub 12. If you tune your gun to shoot the barracudas at 11.5fpe, you may find the lighter pellets then go over. Best bet is try a variety of weights and sizes, shoot with a Chrono and record speed, power and consistency for each pellet along with group size etc. Then use that info to choose which way to go.