Is it possible to rebarrel the white 97's, wondering if anyone has done it? I have a 451 looking to rebarrel to .504, I don't know if it would be worth it or not. But if it would increase accuracy and be a .50 cal it might be. What do you think. I shot my .451 at 50 yrds and groups were about 3" maybe I was spoiled with the ultra mag but would like tighter groups than this.