jaybe asked:

But a question I have is at what distance does the 243 bullet drop to 800 ft lbs, and how fast is it still traveling?

I am not sure of the range. I know that it exceeds 300 yards. The velocity is between 2200 and 2300 fps but i don't remember exactly.

I assume this is probably a 115 grain bullet?

No I used 70 grains, also a legal minimum in many states. Choosing a heavier bullet would have had the effect of reducing the ranges in the table. This is because a heavier bullet has a greater KP at 800 ft-lbs.

If the 243 bullet is still above that, wouldn't this be an "apples and oranges" comparison - or am I off track here?

The comparison is only meant to compare by KP (capacity to cause a wound channel of some specific volume)in the hopes that a congruent pattern may emerge, confirmed by the experience of those who use roundballs.

Happy Hunting, Phil