for the past 35 years i've used W296, but i always figured if i were starting over i might consider using 4227.
a friend of mine used 4227 back when he shot in competition, with great results...
i remember the Bull-X bullets (A-Zone; and Zero too)...
all learning is like a funnel: however, contrary to popular thought, one begins with the the narrow end. the more you progress, the more it expands into greater discovery--and the less of an audience you will have...