You guys have no clue on what your talking about.
Claiming a .270 and 30-06 is a real gun and a .243 is not not. Let me give you the ballistics on 4 guns @ 500yds

--------------------- 500yd-----velocity----energy----drop zeroed@200yds

.243 100gr. federal sierras.--------2040--------925-----------39.9"
25-06-120gr corelocks-------------1825--------887-----------44.1"
.270-130gr corelock----------------1801--------936-----------43.3"
30-06-150gr.corelock--------------1622---------876----------50.9"

wind drift 10 mph crosswind @ 500yds
.243----18.4"
.270----19.7
30-06--19.7

The .243 is an excellent deer gun at long ranges surpassing all 3 guns listed here with the bullets compared. For one energy is not what kills, velocity does and the little 100 gr bullet traveling that fast at 500 yds will mushroom better and do more internal damage than the other 3 guns listed here with there bullets. 500 yds is far but dont think it cant be done I regularly take deer to 300 yds with my .243 like nothing, and they never go past 40 yds. 500 yds aint far fetched. my 16 yr old shoots out to 200 yds regularly and has taken several deer at that range. I have never lost a deer with my .243. In my opinion it is the best deer rifle.
You can keep your bullet lobbing 30-06 . I'll stay with what works better.