Thanks Johnny. Did a thorough inspection of the Colt NM today and also started the paperwork to bring it home. Slide and frame all appear to be in good shape; no evidence of cracking or fissures. I do believe this particular Colt NM was well cared for and fed only the lighter 185g ammo. I do plan on replacing the recoil spring with a new 16# pounder and would like to shoot 230g hardball through it, although not on a regular basis.