With that twist rate you might try the Hornady Superformance 95gr SST's. That was as heavy as I could go in a high BC type bullet. Those shot nicely out my Savage model 12 with a 9.25 twist 26" length barrel.
If you reload then try the 87gr Match Grade VLD hunting bullet from Berger. See Hunting Bullets | Berger Bullets
Its the bullet at the very top of the list. Reloading with the Bergers is cheaper than factory ammo, thats for sure...
Be aware that you will most likely have to relieve the barrel channel in the fore end of that stock to prevent intermittent contact with the barrel which will play havoc with grouping. Then bed the action and recoil lug, which are not too well located in that stock. Unfortunately, that particular stock is too much plastic and too little glass and is pretty rubbery. My 223 SPS the fore end was warped and was putting pressure on one side of the barrel. Because of the flexing, I had to remove nearly 1/8" of material so that it would not touch, even when loaded against the bipod. If you do the $ bill test it will still touch when you actually use it. Using a playing card is closer to the mark with that stock.
Or get one of these
They are currently $140 at Stockys stocks http://www.stockysstocks.com/servlet/the-502/*NEW!*-Bobby-Hart-Long/Detail
Having a Remington is both a blessing and a curse. Great for getting all sorts of aftermarket parts. A curse because many times, you NEED those parts since what you got from the factory was a piece of junk. If you have a good trigger on your gun, be GLAD, because a replacement trigger can run quite a bit of money. The least expensive "decent" trigger I found is the one sold by the barrel maker Shilen Welcome to Shilen Rifles, Inc.
Prices here Welcome to Shilen Rifles, Inc.
I had 2 different experiences with Remington. The first a limited edition 700 "classic" in 8x57 which was terrible in every way. It had an over 8lb trigger, bad inletting and a finicky sporter barrel. I paid pretty handsomely for it too, over $700. I tried everything and it took fitting the Shilen trigger and one of the Stockys stocks before it became any good at all. But the sporter barrel was still a limitation.
The second was a 700 SPS in 223 which I bought used with a cheap chinese scope on it with an even cheaper aluminum optics rail. I put on a steel Warne Maxima rail ($125), a Nikon 4-16x50 Monarch in Maxima steel rings. The trigger on that one was fine, it didn't need anything. But it couldn't do better than a 3" group at 100 yards and it did not take me long to find the issue with the fore end. Once I did the "generous" free float job on it, it grouped 1/2" every time out. The barrel quality of that 223 was vastly better than the 8mm also. It had a really nice bore finish and hardly fouled at all. But it was a 12 twist, so I could not shoot heavier than 55gr and the wind was killing me on my coyote hunting. So I sold that and got the Savage 10 which is my current 223. The Savage shoots 75gr match bullets to 1/2 moa very reliably. My SPS had a 26" heavy barrel and in combination with the light plastic stock is was a bit awkward to carry and handle since it was too barrel heavy. A 20" would have been far better balanced, or else it needed a heavier stock. Anyway, as you can see, for me my 223 was a success story except for the barrel twist rate, but for what it was, it was an accurate weapon once I got the stock issues sorted out.
If you do go with the stock from stockys, it will really transform that rifle.
My 8mm is now with McGowan getting a heavy varmint profile stainless barrel, so in truth I paid $700 for a donor action.... Can't wait to see how it will shoot those 200gr bullets when I get back. They have a BC that is close to 0.6....