So I am new to this forum. This is my first savage, and I am really into pistol bench rest shooting.

I just acquired a savage model 510 in 243win. Now can someone please tell me the steps needed to turn this pistol into a long distance bench rest pistol. I tried to adjust the trigger to a very light pull but every time it got to 1 pound it would start to slam fire, any suggestions to fix this would be appreciated. Also, I would like to keep all the mods to a "do it yourself" vs sending it lot a gunsmith. Now also let me know if getting it rechamber to 243 A.I. Is worth it.