I recently purchased a Kimber Stainless Target II 10mm 1911. I want to put in a heavier recoil spring than the factory 18.5lb one. Can I use 45ACP 1911 recoils springs or not? and do I have to replace the recoil spring guide rod if I use a 45ACP spring? Is there such a thing as a 10mm 1911 recoil spring? What are your recommendations for spring brand and weight for this (with fairly heavy handloads)? Thanks for any input.