I have a weatherby vanguard s2 223. Guarenteed 1 moa. Scope bases and rings tight (factory specs). Trying to sight in. 100yds 55gr hp. Three shot group. As expected first shot (cold barrel)is off, 1-1.5 in . Next two touching. Go to 200yds. Cold barrel shot 3 or more inches off the following two shots. The second two shots are about an inch apart. Ok I guess. I tried 64 gr sp again cold barrel shots a couple inches off subsequent shots. As a hunter I sighted the rifle using cold barrel shots. Cold barrel shots at 200 yds still moa. My issue is the second or third shots from a warm barrel shooting multiple varmints. Considerably off. Is there a fix or am I overthinking this.