WayneO wrote:A 150g bullet from a .308 will probably be doing somewhere around 2600 to 2700 fps so yes its going to damage a lot of meat. A 180g bullet will be traveling at around 2250 to 2300 fps so the meat damage will be significantly less.
Think of it like this.
Open a heavy strongroom door, then clench your fist and slowly make contact with the door while pushing it closed.
Then
Open the door, clench your fist wind back and strike the door as hard and as fast as you can.
going slowly leaves your hand in perfect condition, going fast..................
Its the same as bullet performance on tissue and bone.
One of my favorite bush-veld rifle is a .458 Win Mag with synthetic stock, 20" barrel and a 4-12 x 40 Lynx scope. The reason I like this caliber is because it launches a 500g bullet at a nice slow 1950fps, and on small animals like Bushbuck and Impala, (Fallow and Chital deer) you can take a shoulder shot and end up throwing away next to no meat. You can also take big animals like Eland and Sambar and the bullet will give you more than 1.5m penetration on a frontal chest shot. However its a short range rifle with max distance of around 150m.
To sum it up, light for caliber bullets are great for long range hunting but make mince at close range, heavy for caliber bullets are great for close range work, but drop off considerably at longer ranges.
You need to learn about sectional density