Frankenmauser,
Got your drift.
If it is any help, I've also had no trouble with 63 grain # 1370 Sierra bullets but they don't break the 0.5 inch accuracy mark that I consider accurate, not that I have spent much time trying to tune a load for them.
They did shoot at 0.61 average at 3400 fps so they appear to be stabilzing.
I haven't loaded for any higher velocities and haven't played much with seating depth with them, so I don't really know what might be achieved if they were pressed a bit.
Of course, every barrel/stock combo is different, but I suspect that the 1:14 should stabilize even the Barnes bullets.