Good loads for a 1:8 twist 223?

[284guy]

I bought a Tikka t3, and its a great ,very accurate rifle, with heavy bullets only. 69 grain sierras make this rifle shoot incredible, but I think I can fine tune it a little better. I tried some match grade 52-55 grain bullets and it throws them all over, maybe because of the 1:8 twist? So would anyonne like to share some pet loads and maybe I can fine tune this baby a little? My best group today was .77 for 5 shots.

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[HappyRoman]

try 62 gr hornaday fmj w/c use 23.5 grs of accurate 2230 or Accurate test 68, or accurate 2200 or Ramshot x-terminator. all very similar and made by Western powder,Inc.

 

[MacBookProAR]

24.5 gr of Ramshot TAC, 55gr Hornaday FMJ BT and Wolf primers. Super cheap load and I shot sub 1" out of the upper that Roman has now with that load.

 

[jib]

Your rifle should shoot up to 77-80gr bullets quite well. To get a lighter bullet to shoot well with that barrel twist I would slow it down or use a better bullet.

 

[284guy]

The best Ive done with lighter bullets was a slower load with 55gr ballistic tips just over 2" group. Mini-14 performance, no thanks! I havent tried anything heavier than 69 grain.

 

[Twodogs]

26.5grs of varget with a 60gr V-max or 26.2 with a 65gr sierra gameking.

 

[the4thshake]

I have a 1:8 twist AR and 68 or 69 grain seem hit the sweet spot. Both the Hornaday and Sierra bullets shoot 1/2 moa for me. I tried the heavier 75 and 77 grain bullets and they shot around 3/4 moa. With a good 45-55 grain bullet, the gun still shoots under 1 moa.