I use a 26" Kreiger barrel. Every barrel/chamber will produce different velocities/pressure but I can't get up to those speeds with a 200 gr AB in MY gun. I'm closer to the "norm" 3050 fps.
Like I said, not calling you out, just wanted to know what you were using.
I use 101 grs Retumbo (I've been to 103 grs), Fed 215GM, Rem case, with the 168 TTSX for 3365 fps. (neck-turned, trimmed, flash-holed, chamferred)
I've shot 2 groups in a 100 yd indoor tunnel, one group in the high 2's and one in the mid 3's. I'm pretty happy! Outdoors I can usually keep it in the 7's or so. I just looked at my 600 yd group that was 7", 5 shot. I'm thrilled with the performance.
Thanks for the info on your load. Maybe I'll try to work up again.
Zeke