I just bought a .223 Siaga. It has a side receiver scope mounting bar. I was also told that the metal receiver top can be replaced with one that is grooved for scope rings. Which is the best way to go? Who would make a side mount scope bracket for it? It looks to me that removing the grooved receiver top with a scope attached in order to clean would change the point of impact when it was put back on. I've never used a side mount before, and I don't know how close allignment with the bore is likely to be. I've been a bolt action user in the past, so any help would be appreciated.