First off I realize I am splitting hairs, however here goes.
I am not a fan of the 243 win for deer, but after a lot of agonizing, I have bought a Marlin XS7 youth for my son. I intended to put as many odds in our favor as possible by using 100 gr Partitions. Brass has been hard to find so a friend gave me a couple hundred pieces and also a full box of Barnes 85 TSXs.
Is there any downside to either, the TSX are lighter than I intended to use, but tend to penetrate a little deeper than partitions by what I have read.
Is there any reason for me to not believe that they will work just as well as the Partitions?
The 85 gr. TSX are as good or better than the 100 gr. partitions. Penetration and expansion are both great with the TSX. Also, the 243 is better than you think, with a well placed shot it is a very efferctive cartridge for deer sized game and under.
So, I would say, just load the TSX and go fill up the freezer and the photo album!
I agree with x3mhunter. The front part of the partition blows away at impact leaving the rear portion and much less than 85 grains. The tsx will perform, penetrate better and probably leave close to 80 grains.
Predictions are difficult, especially when they involve the future
I think the .243 will serve you VERY well as a deer rifle. Either of the bullets you mentioned should work well and for that matter, a lot of the lower priced bullets would do just fine. I would shoot what the rifle likes best as long as it is a hunting bullet...Rich
As this rifle is for my SON, who is 6, his shots will be under 200yards. I will load both and see what the rifle likes.
I currently run a reduced load in my 308 rem 788 for him, but the recoil is a little more than he likes. I have ran the numbers and the 243 will have about 25% less recoil, so I hope he will shoot more. He shot 20 rounds of 22 lr sunday at a 3" bull at 100 yards and hit it 19 times, but has missed 3 bucks this year with the 308. I have to figure out if it is buck fever, or the gun.