Based on the recommendations from another friend and the praises here, I just received the HB Industries chassis. Very pleased with the quality!
I'm building out this rifle for my 7yo son to use - I'll finish out the chassis with a custom length carbon buttstock from Smoke Composites. Hoping to get it to balance at around 10-11 pounds so he can use it for NRL22. 🤞
To further answer OP's question, if you're switching from a quality stock to a quality chassis, I'm not convinced the chassis itself will shrink your groups. I think the tighter groups associated with a chassis tend to be more closely related to the ability to get proper fit in a chassis, where a stock can sometimes be somewhat limiting due to lack of adjustment capabilities (LOP, cheek weld, etc.).