You should try the 39 BKs and load for the throat.
Those were the only thing I could get a factory new M77 VTGT 204 to shoot one M O Varmint, because those were the only bullets with a long-enough shank to touch metal on both ends.
Then I had a new barrel (Ruger replaced it) and that one did the same. Then I had Greg Tannell do a 230 neck short throat and could shoot 32 BKs, 39 BKs and Berg 35s -- but it was still super brass sensitive, wild flyers with the tiniest defect in case wall thickness.
