I've seen and shot Core-Lockts well out of two .270s: a Mossberg and a Howa 1500 (identical action to Weatherby Vanguard).

X2.

Another Core Lokt shooter here. Have been using them in every .270 I have owned (Ruger, Remington 710, and T/C Encore Prohunter) and they have been great. Have taken game from literally under my stand to 350 ranged yards and it always did the job if I did mine. Tried a number of higher-end ammo choices, but have always come back to the green box.

Having said that, the guys at Hill Country Rifles here in New Braunfels like Federal 130 grain soft points in this caliber. They seem to know what they are talking about, so it may bear checking out.

Core Lokts.

Been killing whitetail, axis, hogs, blackbuck with them out of my .270 for many years. Very accurate, very deadly. Rare I have to follow an animal very far at all. Only thing I haven't seen big exit holes in are a very large axis buck and a very large hog.

Federal Premium 130 pick your bullet they all perform well

I choose bullets that provide reasonable accuracy on the range but ultimately I choose based on the hunting that I am doing. I do most of my Texas whitetail hunting with my 270.

I have killed lots of deer, hogs, etc. with Core-Lokt, Power Point, and similar "basic bullets" from Hornady and others. I really like them but like everything related to shooting, they do have limitations.

Most of the complaints about these bullets are not related to accuracy (rather most have good luck with one or all of them) but lack of penetration. The thing to keep in mind with those bullets and a high velocity caliber like 270win is that they are not bonded for controlled expansion and as such they can over-expand at/near the surface at high velocity.

If I expect to shoot primarily <= 100 yds with some shots out to 200 yds, I would opt for a controlled expansion round like the Federal Fusion, Winchester Power Max and the higher end bullets like Barnes TTSX, Nosler Accubond, etc.

I also have moved from shooting primarily 130 grain ammo to 150 grain. Trajectories are very similar in a 270 (100yd zero ... ~2.5" 130gr vs. ~3.25" 150gr at 200yd, ~10" vs. ~12" at 300yd) but the 150's tend to be more consistent for me.

Fusion or Power Max 150 grain bullets are what I use the most with my 270. I usually have some Core-lokt, Powerpoint, or similar in my pack if I am hunting wheat fields where I may want to shoot farther than 200 yds where those fast expanding bullets really work well (or a tipped variety like the Winchester Ballistic Silvertips).

Same experience for me. My Tikka loves the factory barnes and with a Leupold CDS its accurate at distance. best is to get some various boxes and have some fun figuring out which one it likes the best.