In Remington "green box" core locked, the 270 Winchester 150 grain round nose is a SUPER good bullet. I have shot them quartering through large elk and had them break big bones and they still exit and always expand.
In a 308 again I can recommend the Remington "Green box" with their "core locked" with 180 grain bullets.
Close range hits with rifles most often penetrate less than long range hits just because the bullets are going fast enough to come apart, and the slower they are at impact the less they come apart.
With these 2 bullets I have not seen failures at close range on elk, deer or bear.