JVB testing the 77gr TMK for elk hunting

Except what I actually said is not wrong, and what you said I said is not what I said.

Mass does have something to do with penetration, particularly if we're discussing bullets of like construction that 'continuously expand', because (for example) a 300 grain bullet that keeps expanding/fragmenting until there are no chunks big enough left to continue penetrating will penetrate deeper than a 77 grain bullet that also expands/fragments until there are no chunks big enough to continue penetrating, because the 77 grain bullet has a lot fewer chunks it can create before it's out of mass.

Further, I never said "caliber" makes for more penetration, I said a 338 (for reasons I didn't mention, which include higher sectional density of commonly available 338 bullets, typically tougher construction of 338 bullets, etc) would out-penetrate a 243, which it absolutely will.

I don't mind at all if I'm actually wrong and someone calls me out, in fact I kind of enjoy that sort of thing in a technical discussion context, I love learning new information or learning deeper nuance about things I already know. However, you appear to intentionally misinterpret what I say for what I can only assume is for the purpose of being argumentative about it. If i want to play that kind of game, I'll go have a conversation with my wife, LOL.

You were/are correct. If mass did not impact penetration, Cape Buffalo hunters wouldn't bother to shoot heavy bullets instead of lighter bullets.

Ultimately, there are a lot of factors that will determine how far a bullet will penetrate. However, all other things being equal,
- a heavier bullet will penetrate more than a lighter one.
- the more a bullet tends to hold onto its mass, the more it will tend to penetrate farther.
 
You were/are correct. If mass did not impact penetration, Cape Buffalo hunters wouldn't bother to shoot heavy bullets instead of lighter bullets.

Ultimately, there are a lot of factors that will determine how far a bullet will penetrate. However, all other things being equal,
- a heavier bullet will penetrate more than a lighter one.
- the more a bullet tends to hold onto its mass, the more it will tend to penetrate farther.

This is absolutely true. All other things being equal is the key to that statement, though. If caliber and/or bullet construction are allowed to vary, it becomes quite a bit more difficult to predict what’s going to occur.

And that’s an argument that still assumes more penetration is required to kill (in the case of this test) an elk than a 77gr TMK can provide.
 
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