Originally Posted by dmitril
I cut my springs all the time, absolutely nothing to worry about, you don't even need to flatten the cut end. I see people talk about issues that can arise from "incorrect" cutting yet I have yet to see actual pictures of such damage.
I've done it before and I've done it wrong so I just chose not to do it again.
M10 spring cut down too much and I got 150 fps afterwards and a plastic spring guide got warped to shit.
It's just much cheaper and convenient to buy a proper spring and drop it in than cutting it and chronograph every time you need to reduce the spring length to estimate the proper fps.