Well, a target shooter told me just the same thing about lock times. So I fitted Wolf blitsschnel spring, but found the trigger pull and the ease of loading quickly were stiffer, rapid firing with the rifle kept at the shoulder became impossible, my group was no better. Disappointed, I re-fitted the original spring and sold the Wolf spring on ebay. I'd be really interested to know if anyone has been able to improve on the original spring characteristics, personally I doubt it.
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