Hi Dragon:

The mini is not going to meet your needs, cost effectively.

You should be able to find a new mini for around $500. However, all the glass will do is let you see your misses. You will not get the accuracy you are looking for. Most minis are lucky to shoot 6 moa, out of the box. The reasons that seem most valid are a $2 barrel that gets hot too quickly and an action that does has not been machined to close tolerances.

Unless you want to buy a Springfield, I'd go with a .308 or .30-06 bolt, which you can find for about $500, sans glass.

Good Luck.
CE