One of the big issues with the .22-250 was there was a lot of slow twist guns 1:14 being common. Some were 1:12, but I see the brownings are 1:9. That would probably stabilise some heavier bullets that would make the .22-250 shine.
I shoot 40-50 gr bullets for varmints out of the slow twist guns. It shines just fine.
I shoot 40-50 gr bullets for varmints out of the slow twist guns. It shines just fine.