Im pretty new to reloading and the 243 so i need alittle help finding a good start point for a load. I have a 1-9.125 twist 20" barrel and am looking for a good load for out to 700 yrds. Been looking at the 105news a-max and the 107 sierra matchkings. Will they stabilize with that twist or should i look at something like a 80-100 grain round. Also would 4350 be a good powder to start or should i go with some thing else.