Yes! Doing so is very common with a stacked baffle design, like the BANISH 30.
Having one silencer for all rifle applications doesn’t often impact performance because .308 silencers are longer with additional baffles. Due to its light weight, titanium is one of the most popular materials for application on all sub calibers. Please note that not all .308 silencers work well on a .223. Stack baffle design is typically best for dual application because there is a greater surface area to remove heat from the blast.
In recent tests, we found that our own exclusive silencer, the BANISH 30, was quieter on a .223 than a .223 silencer was. Additionally, we have tested some silencers that are not hearing safe on all sub-calibers. As such, it’s best to ask our staff if you have a specific question about certain models.