Most likely Not, you will only be able to go down approx. 10lbs.
My son has a Showdown and you can safely turn out the limb bolts only 3 full turns,each turn will lower draw weight approx.2-4lbs.
If you buy the bow new the birth cirtificate on the string will tell you max peak weight which is what the bow will be shipped set on.
In my sons case the max peak weight was 72lbs when I set the bow up for him I decreased the peak weight for him turning out the limb bolts 2 full turns and came up with 64lbs,
You will be able to lower the peak weight approx. 6-12lbs although each bow is differiant.
As you can see in my sons case we lowered peak weight by 4 lbs per turn of the limb bolts therefore one more turn will set peak weight to 60lbs.