Flat Wire Spring for 12-gauge Magazine Tubes?

[LeoAtrox]

Does anybody know of any flat wire springs for 12-gauge magazines?

I know that there are some flat chrome-silicon springs out there for AR receiver extensions (buffer tubes). They provide increased strength/resistance at factory weight ... And I figure such a spring for my shotgun magazine might make fitting that last shell in a breeze. As it is, the spring coils stack and I run out of room with some ammunition. A flat spring would compress further. I just don't know where I'd find one.

Sure, I could trim the existing magazine spring some more ... But I don't want to keep trimming only to run out of "push" for getting that last round out of the magazine.

[StrangerDanger]

Do you have one of the Wolff springs that carriercomp offers?

[LeoAtrox]

Do you have one of the Wolff springs that carriercomp offers?

Yeah, I do. And it's fine. Just looking for something better.