...the spring listed was the 500fps Canadian part. That would explain needing a different) more powerful) spring in .22 vs .177 to achieve the same Canadian-non-PAL-mandated 500fps (and therefore twice the power) with .22 weight pellets, although it would still be wimpy by US standards.
No such difference in spring ratings would apply to the full-power US version.
So if you want to order a spring from this list, care is indicated.
Steve
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