The two videos below are expansion tests on water jugs at 100 to 500 yards.
Don't put too much stock into bullets fired into nothing but water. I've tested countless bullets over the years and can tell you that what happens with water versus what happens when the projectile meets flesh and bones is generally not one and the same.
With TAC, I run the 110 grain GMX at just over 3200 fps from a 20" bull-barreled .308 WCF. The wound channels in game indicates the bullet opens VERY quickly and to a VERY wide frontal area. On hogs, I've only noted one single instance when the 110 grain CX shed any petals, and that impact was a shoulder-to-shoulder shot, which featured not only a thick, mud-caked hide, fat, a shield that ran right at an inch thick on each side and the bones of a large, mature boar. Even so, it very nearly exited and was recovered between the shield and the hide on the opposite side. And for those who don't know, the shield on these boars has the consistency of hard rubber and can be tough on bullets.
Below is are photos of a Barnes 120 grain Tac-TX that had an impact velocity of app. 2800 fps. The petals had thinned, but they did not shear off.
The frontal diameter was beyond impressive:
This is a photo of a 110 grain GMX that was taken out of test medium. Impact speed was just a shade over 2800 fps.
Here's a 110 grain Hornady CX taken from a hog last summer. I don't have those notes in front of me but want to say the impact speed was in the 2300 fps range.
And while this isn't .30 cal, here's a light-for-caliber 95 grain TTSX that recovered from a large boar I shot about 10 days ago. MV was 2920, meaning the velocity at impact should have been in the 2550 fps range. This bullet was designed for the velocities of the 6.8 SPC and thus is a good match for my 20.5 inch Van Horn Contender barrel in .270x.225 Imp (aka .270 JDJ). The bullet hit on the front portion of the shoulder, penetrating the thick shield, breaking the bone, wrecking the lungs, passing through the edge of the opposite shoulder, breaking a rib and then lodging in the hide and very nearly exiting.
Impact speed should have been about 2550 fps. It lost a couple petals but still weighed 78.4 grains. The widest point measured .536”. Even with no CNS impact, the hog folded on the spot.