RE: when you are making the weight of a bow the lowest, will it
Check on what the manufacturer says about how many turns you can do or check the poundage as you do a turn.
The bolts do not stop undoing when the bow reaches it's lowest weight.
The draw lenght adjustment also depends on what make of bow it is.
If it is a modular system then you dont need a press but if it requires a cam change ir the string moved to another peg then yes you will need a press.