first time loading for 243 ai and need help with some loads. i have an 28" barrel, 8 twist and want to try the Hornady 105 a-max to start. if possible i would like to use some of the powders i already have available to me. they are Reloder22, Varget, IMR4350, IMR4831, IMR4064 and IMR4095. if you can help me out it would be greatly appreciated!!! thank you all in advance.