CFrame in a tool goes too slow, How do I speed it up??

So I'm making a bolt thats on a gun in a tool go backwards. (Like a bolt that gets pulled back.(Basically cocking the gun.)) But the problem is, is that it goes WAY to slow. As you see in the script, I tried making the waits as little as possible but it still goes at the same speed as 0.01... Could someone help me figure out how to speed up the CFrame? Thanks! (NOTE: I am not very experienced with CFrame at all. This line of code is basically the only thing I understand about CFrame.)

Here's the script:

local Bolt = script.Parent

    for i = 1,35 do
    wait(0.00000000000000001)
    Bolt.CFrame = Bolt.CFrame * CFrame.new(0,-0.015,0)
    end
wait(1)
    for i = 1,35 do
    wait(0.00000000000000001)
    Bolt.CFrame = Bolt.CFrame * CFrame.new(0,0.015,0)
    end