Question on Recoil Spring for 152 Power Factor .45ACP

Hey guys,

I came across a sweet deal on 200gr .45ACP @ ~760FPS.

This seems to create significantly less muzzle energy then your standard 230g 850FPS.

I know there's a good chance I may need to download the recoil spring, I'll try it with a 16# first, but to save time I'll pick up additional springs as well to test.

What other recoil spring weights should I get to test with the round? I was thinking 15# and 14#, but I'm just guessing here... could be 12# for all I know.

FYI: 5" Gov't 1911 in .45ACP if that wasn't made clear. Thanks!

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Question on Recoil Spring for 152 Power Factor .45ACP