YES it will change the accuracy!!!!!!!!!!!!!!!!!!!!

Every time I have changed grips it changes groups and even point of impact. It has to do with the harmonics AND frequency of pitch and vibration or wave. Particularly with the Pac’s. I have had problems with the Pac’s every time I have used them. They look good but usually cause “Me” a lot of headaches. I had my 22-250 shooting 3/8 in groups with the hard plastic grips and had to fight to find a load that would shoot 1 in with the Pac’s on the barrel. I would look at Ol Jim’s grips and go that rout.
Just my HO. Everyone has them just like posterior ends. LOL