projectile choice IS IMPORTANT and DOES make a difference...eg using my .223 for wallabies or hares the 50 grn Vmax/Zmax is simply outstanding...it dumps all its energy inside animal,destroys itself in process and makes big mess in a hurry...PERFECT for very thin skinned light boned critters and stops the hop quicksmartly.
for deer sized critters the 50 grn ttsx Barnes mono does opposite,it penetrates right through leaving smaller hole but a deep one.
middle ground would have to go to Hornady 55grn factory loads,and many many almost any basic cup n core loading...penertrates ok and expands ok...not huge amount of either but enough to do the job....shot placement is criticle on bigger game.....
you CAN shoot rabbits with barnes ttsx...and they will die...but if you misplace shot it may take some time.
you can shoot deer with 50grn Vmax too...but unless you in brain,neck close to spinal column or slipped in between ribs I dont like your chances of a quick clean kill
now on paper all three of those loads is identicle and have same energy and same knockdown power...reality is far from it.
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