Poconolg, I got into BR just after 6ppc started winning. Prior to that, lot shot 222 with custom 52gr FB and most of those had tight neck. I don't remember anyone shooting 22-250.
Just putting heavy barrel on Rem action doesn't make it BR rifle vs looking case used in BR. You see 6ppc today but don't see 22ppc.
If you want to shoot small groups change that rifle so it shoot 6ppc case and have some fun with it.