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This is for a rimfire application, and I'm trying to use existing materials where possible. I'd like to retain the carbine buffer. For some off beat, i.e. non-22lr rimfire systems, the ability to add weight would be useful.
I perused Wolff. One of the great things about 1911s is the wide range of spring weights available, but then I'd need to do something different for the buffer body.
I didn't see weight ratings for shotgun magazine springs, and they are likely a bit too small in diameter. From what I recall of loading a shotgun once, the rate was essentially linear over an impressively long distance.
For preliminary testing of parts, I could clip coils off a regular carbine spring but I'm confident that I'd end up with a steeply progressive rate.
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