Every caliber I've ever used has had a DRT at least few times including the 30-30. Jack O'Conner did all that many times with a 270 a Winchester before 1960...even in Africa, and Alaska interior grizzly and proclaimed the 270 Win the best big game rifle for all except the dangerous kind. But I never owned a 270 Win, and Weatherby proclaimed the 257 Weatherby the super killer. But I've never owned one...but use the 25-06 for coyotes, rock chucks, rabbits and squirrels and found it awesome. Deer nothing special, but it worked.
Then I've seen deer and one elk drop dead with an arrow at less probably than 200 fps impact velocity, but that's fairly rare for arrows. I've found that every reasonable caliber kills with good bullet placement, some a little faster...sometimes. It's a variable, and we all have experiences with different calibers that shape opinions. I couldn't tell any difference between the 7 mm mag and the 7 Mauser, for my moderate killing ranges but stuck with the 7 mag...until I used the 338 win mag, as I preceved it to kill faster, and sold the 7mm mag.
But I reality all the game shot with either was dead...so DRT is a unimpressive statement, when the result would be dead at any rate 100 yds or drop on the spot dead with a 35 Remington or a 44-40 at close range. An old man who lived in elk country in a cabin on oinion creek, in the Blue mountains, when I was young, he killed more elk with a heavy 26" octagon barreled 1894 winchester curved steel butt plate open Buckhorn sights in the 30 WCF cartridge than anyone I've ever known. And I got to shoot it ...he was my closest neighbor 2.5 miles away, for awhile, and I learned things, gold minning, claim jumpers, hunting, that loaned out, old well used lever gun was lion and bear protection before I bought my own 16" Wnchester trapper made in USA, called 30-30 today ...and I practiced out to 400 yds with it in those days open sights, and shoot the heads off mountain grouse 170 gr flat points.. It was my favorite gun, carry it everywhere in the truck. The best gun ever...for awhile. I Still have it but can't see the sights these days. But if I could it's all the gun I needed in isolated Desolation, it killed everything I shot at at moderate ranges...as well as the 7 mm mag ..up close. The gun was a tool, it worked, no pride in owing a 30-30 these days...