I use anything from 80gr-100gr. This yearI will be using 100gr.

My Daughter uses the Remington Core-Lokt in 100 grain in her Rossi Youth single shot .243,and I use the 100 grain Hornady Custom bullets in my Browning A-bolt .243 Rifle.I like shooting the heaviest bullet in our .243 Rifles for the best knock-down power available in that size of Rifle.Like most have stated....Shot Placement is the key to a quick humane kill on a Deer!

ok ive noticed alot of responses say my wife/daughter/son use one. I'm 16 gonna be 17 in jan and all i use is a .243 because it accurate and doesnt have the kick... no im not afraid of it i just dont see anyreason to shoot a gun w/ alotta kick when i dont need it where i hunt... but i shoot 95 gr.

I use the 90-gr Remington Scirocco

I switched last year and didn't get a deer but they are very accurate in my rifle.

i use 95grain remington core lockts

I also use 100gr Remington corelokts! accurate, great performance, great price

When my brother and I shot .243's, all we shot was 100 grain.

100 grain... i usually buy the core lockts but this year i got some 100g winchesters, andnow i can't find the box and i'm kinda freaking out since i just got them.i'm shooting 1" high at 120yds anddead nutsat 200yds i am very with the switch!

100 gr. is what ive used before and every time i pulled the trigger on my deer with my .243 they dropped in there tracks.

My wife, both sons, and I have all used a .243 very successfully for both deer and antelope. Always we have used 100 gr, just because I felt happier using a slightly heavier bullet.

Certainly, as has been stated, shot placement is of prime importance. However, I've also killed many deer with .270, 30.06, and 7mm mag with bullets ranging from 130 to 180 gr. With a well place double lung shot, the deer have consistently gone further after being shot with a .243 than with any of the others.

Bottom line - I would certainly use 100 gr rather than a lighter bullet.