Interesting concept, a 223 Wyld in a bolt action. Looked around after reading your post and did not find any factory bolt action rifles chambered for the .223 Wyld while they are common in the MSR style of rifle. I have two MSR's both chambered for 5.56 NATO. They have different barrel twists, one of them a 1/9 the other 1/7. The 1/9 will shoot 55gr bullets, but not all that accurately, group sizes vary at 1.0 MOA to 1.5 MOA. With 62gr the group tightens to between 0.7 and 0.9 MOA. With the 1/7 twist the 55gr won't do better than a 2.0 MOA, 62gr about 1.5 MOA with 69 to 77gr shooting between 0.9 to 0.6. It didn't seem to matter whether 5.56 or .223 ammo was used as they both seemed equally accurate. From what I can see in order to get a bolt gun in 223 Wyld you are going to have to have it custom barreled. If it was me I would get a Tikka T3x in .223 and go from there. Good Luck!