Can anyone speak to the advantages one bullet has over the other? Ease of loading? Chasing lands?
If you're evaluating those bullets for their potential accuracy at 100 yards, that's an expensive way to use a 375CT.
For the particular case of 375, the ATips make the 1:10 or slower twist factory barrels relevant again.
If you're intending to shoot past 3000 yards, the BC variation becomes the largest problem and the 400 grain Lazers dominate. 1:8 or faster barrels are used.
The largest components of the error budget past 2000 yards are accuracy, velocity spread, BC spread, and uncertainty in the aiming point. At 100 yards, the last 3 are inconsequential. By 1000 yards, velocity spread is becoming a significant problem if it's not well controlled. BC spread is as well, but not to the same degree. By 2000 yards, 1 moa, 10 fps, and 1% on the BC are all about the same problem. The issue is 1 moa equipment is pretty easy but 20 fps on velocity spread for your next 10 shot string is pretty good and 2% on the BC spread is about all you can count on for 10 shot strings with jacketed bullets. The error budget from those factors is further expanded when you try to turn precision into accuracy and realize your last 3 shots are only a few of what will be a group larger than the likely target and a good guess on where the center of that group would be really useful but just isn't going to happen with any certainty. Thats the best case, spotting impacts, particularly on the target, is not guaranteed at that range. By 3000 yards, the effects of BC spread are becoming really ugly because they're also affecting the on target velocity spread.
BC spread comes from several places, it's not just the bullet. The initial engraving and launch at the muzzle both affect it significantly. Those problems increase with barrel wear. A Lazer from a fresh barrel chambered by somebody that knows what they're doing might have a BC spread for the next 10 shots below 1%. It'll also be somewhat easier to control velocity spread with the solid. Or it might not. Solids don't obturate nearly as well as jacketed bullets. If they don't work with a barrel, no amount of tuning is likely to fix it.
The BC spread for a big box of hollow point match bullets might be as high as 8%. If you find the really short ugly one, it'll probably be half that. Sort them on length and pull out the ones with ragged noses and it'll probably be half that again with a decent fresh barrel. The ATips let you skip the earlier steps. They've been circumcised to install the tip, so the weight spread will be larger than the hollow points but it'll still be small. Jacketed bullets are actually pretty flexible, so what comes out of the muzzle tends to have larger shot to shot differences than what left the cartridge when compared to solids.
As you move down in caliber, the BC advantage of the ATips over the Lazer become larger. Light Gun ELR tends to stay below 3K yards, so the potential BC spread advantage becomes smaller. A 3-4" jacketed bullet spatter is also a lot easier to see than a 1 caliber spot from a solid. In the middle of a run, a spotted shot on target is infinitely more valuable than esoteric BC discussions.
If the conditions, both shooting and lighting are less than ideal, Lazer NO CALLS count for exactly the same as the same from ATips but cost a lot more. Useful barrel life with the Lazers will be shorter for several reasons. Solids are harder on barrels, run at higher pressures, and you're only using them for their peak performance. When the barrel starts contributing BC spread, it's replaced and that's far sooner than when the accuracy falls off.
