this bullet wt diameter issue just wont go away
It shouldn't go away. It is a characteristic of a physical system. The correct rifling rate is a function of length to diameter. For a given caliber, more weight means a longer bullet and a faster required rate of spin to stabilize. At caliber .224 you need 1:12 for 40 gr, 1:9 for 55 gr, 1:8 for 62 gr. Spinning a bullet too fast for its weight can cause disintegration in flight.
Heavier bullets retain more kinetic energy over longer distances. Bullets with better ballistic coefficients e.g. hollow point/boat tail will given a more consistent trajectory. Pick the design that meets your intended use.