Hate to bring actual experience to an internet forum, but.....
Over the last 50 years with the 243 I have seen both over the shoulder and thru the scope one shot kills on elk everywhere from powder burn close in the timber to... well better not say or some twit's liable to get their panties twisted. Only know of a couple dozen out of the entire bunch that used anything other than a cup and core hornady 100 gr bullet. The other bullet was the Nosler partition and that's because that's what my Moms rifle shot the best...
As with any cartridge YOU MUST put the bullet where it will do the most good, and anybody that thinks you need something big to shoot thru an elks paunch and kill it probably haven't shot enough elk to matter.
Bottom line yes the 100 gr bullet from a 243/6mm remington will kill elk dead, and as with a 338 if you blow ones hind leg off you still got a mess....
Some of you bonafide experts could tell the old guy in this picture that a 100 gr 6mm bullet isn't anygood except up close and on small elk, and he'ld laugh in your face.
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the most expensive bullet there is isn't worth a plug nickel if it don't go where its supposed to.
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