JAGMAGMAN does have a point...a Winchester Fail Safe designed to shoot lengthwise through a moose will probably not expand much on a broadside deer...though the deer will die...

That is why proper bullet selection is still important...

In small calibers, light bullets are too light and can fragment and make a general mess of things...heavy bullets and/or tough-premium bullets are the ticket here...

In large calibers, heavy / solid bullets are made to knock down elephants and T-Rexs...fragile bullets like the Ballistic tip is the ticket here...

The 7mm bullet is a high sectional density bullet anyway, especially in the 150+ grain sizes, so penetration will be better than normally expected even with "fragile" or soft bullets...

Stick with non-premium bullets (Powerpoint, Core-lok, etc), or semi-fragile bullets like the Nosler Ballistic Tip, Nosler Partition (which also works well on very large game), Ballistic Silvertip.

IMO, I would avoid the all copper bullets, Barnes X series and the Winchester Failsafe, and the really tough bullets, Swift A-frame, Trophy Bonded, etc...too expensive, and really too tough...save them for moose or bear.