of the black coated Nosler bullets that I have used, which include:
22 caliber-55g in a Remington 700 VSSF
6mm- 243 Winchester caliber in a Ruger varmint-95g
7mm- Many Remington 700's, Browning A bolt, and one very beautiful 7 Mag, Savage 116-140g
They all were extremely accurate and no issues with surface explosions of any kind. Brothers, Cousins, and Dad killed a lot of deer with the 140g Combined Tec bullet out of 7 mags at warp speeds, while brother and I shot them out of the 7 STW at 3550 fps.
Several things we have seen:
Lubalox coating reduces friction, thus takes a tad more powder, thus more velocity in every case vs normal nosler ballistic tips
coating is no issue coming out of the barrel
IN the Drop dead gorgeous Savage 116 in 7 Mag , it would shoot 3/8" groups for 12 shots, then groups would open up to 1". The shooting string was extended to around 25 rounds with the lubalox bullets.
All of these bullets liked to be seated touching the lands in every case for best accuracy.
If you can find these on sale, buy 10 or more boxes, they are like money in the bank.