I've heard of issues with baffle strikes shooting 110gr bullets out of the SIG 1:5 twisk 300 blk. I wanted to check if anyone here has the same configuration and has had any issues shooting the lighter bullets with this faster twist.

Not Exactly the same, but my 1 in 6" twist MCX 300BLK bbl shows no baffle strikes with 110gr Barnes black tips.

The 1/5" twist was developed with 110gr (to 220gr) ammunition in specifically in mind. By way of example, the Rattler 5.5" barrel, with 1/5" twist typically produces sub MOA groupr out to 300m