I would love to have an older non lock BG for CCW, and lightweight is OK, would supplement a steel frame J frame. Carry alot and shoot little. I would shoot standard ammo only in it. Then get a plus P round of about the same bullet weight as carry, hopefull POI will not vary too greatly then. I would carry it CCW with the plus P in it though. If you ever have to use it and it loosens up the gun a bit in the process, well then it has payed for itself by CYA so if you survive and lose use of a small gun in the process, it was insurance and it paid off. Frankly, a LW gun is not gonna be all that pleasant for alot of practice and I suspect you can even shoot one loose eventually with standard ammo-aluminum is aluminum, anyway you slice it and the frame takes a beating everytime a bullet funnels its way into the barrel. So I would practice more with the steel gun I have and baby the LW gun.