22-243 is a poor choice for your needs, you said you wanted to shoot 55-62gr bullets fast.......been down this road several times.
If you want a repeater it is hard to beat the 22-250 using Lapua brass in this combo. The swift is capable of better accuracy but in my rifles they are seated out so long they are single shots that wont fit in a short action magazine.
I have found out it is a complete waste of time going to a bigger case capacity than the 22-250 or swift if you are not willing to go to a heavier bullet with higher B.C.
I have wasted barrels shooting up to a 22-284
IMHO the perfect 22 cal combo is a 22-250AI using lapua brass a 75-80gr VLD type bullet with a 1-8" twist 5 groove barrel, A 22-243 might beat it by 50fps but have less than half the barrel life.
