The great thing bout a .243 is the lack of recoil with most any load you use. This allows you to hit where your aiming without the worry of being hammered when the trigger is pulled.
I hunted with one from the time I was 6 until I was in my mid 20's and used about every weight available. In that time span, the old discontinued 85gr Nosler Solid Base probably accounted for as many deer as anything else. When it was dropped from their line, I used the Partition, and the Barnes X and had just as good of results as ever.
Nowadays, I still have the same rifle I started off with along with a Remington pump and a Sako Forrester. They are all firing the 100gr bullets. Even with them there is relatively little recoil compared to a heavier bullet fired from a bigger caliber. In fact the 9yr old grandson used the Sako to drop a nice hog right around New Years with the 100gr bullet running just over 3000fps.
If your looking for what seems to be a accurate factory loading, give the Hornady Custom 100gr load a try. It has shot so well in several rifles, including mine, that it is all my friend and his family use. This would be 1" accuracy from 7 different rifles of different makes. If it were from just one I could admit it liked that particular load, but for several years we have shot it through all they own and mine included and they all shoot it well. We're either very lucky or the load is pretty decent.
The 100gr SPBT they use has reliably dropped deer and hogs for them year after year. I keep a couple of boxes on hand just in case I run out of handloads, or run off and leave them home or at my farm. They are only a bit off from my handloads and are just as accurate from my rifles.
I would give them a try, I doubt you will be disappointed.