100 grain but I wouldn' t use a ballistic tip in a .243. I tried them and blowed an entrance hole about 8 inches round when the bullet impacted a rib. It would have been a great hole if it was on the exit side. The deer was hit right in the lung area but managed to go 1/4 mile before dying. I' m a firm believer in ballistic tip in the mid calibers, 7mm mag, 30-06, etc. but the .243 doesn' t seem to have enough punch to deliver the bullet to the deer' s vitals before exploding.