Hey dale, good question. I might be wrong, but I believe that if your wanting to improve your quality time behind a trigger that's going to help you with your 5.56 score ? Then using a differently configured rifle really isn't going to help you. Its sort of like me thinking that if I practice with my 1911, it will help me with using my Thompson Contender for IHMSA competitions. I think you are on the right track about using a dedicated 22 LR upper to help reduce your ammo cost. But the problem with that is 22lr ammo is famous for being inaccurate unless you spend some money on match ammo. If you use the cheap stuff and miss the target, you wont know if it was you, the gun or the ammo, meaning you learned nothing by taking that shot. What I have found out, is that I really wanted to excel in a shooting sport ? I sucked up the thought of the price and paid it. Hope this helps..
