Being as how the feed lips do not contact either the FMJ or wadcutter bullet, what difference can it make??
The wad cutters were developed with hollow points in mind. They help. The hybrids are supposed to work well with both FMJ and hollow points. IIRC, member 1911Tuner had some input in the design with Checkmate
The "Hybrid" feed lip design is Colt's. It came from the die and anvil that AMU armorers used to create a timed release point in the standard "Hardball" magazine lips to enable use with the H&G #68 bullet. Colt just took a page from them and started to specify the modification for their vendors because it also worked well with hollowpoints. I am, however, responsible for them offering the Wolff 11-pound spring in their 7-round magazines as an option.
I collaborated with Check Mate on the development of their bullnose follower and provided them with the dimensions for a gauge to check and set the final release on their full tapered GI reproduction magazines.
I think, if memory serves me, the "wadcutter feed lips" allow the cartridge to be released from the magazine sooner, and the cartridge has a more straight feed into the chamber.
Thanks for setting the record straight. And thanks for your contributions to more reliable mags.The "Hybrid" feed lip design is Colt's. It came from the die and anvil that AMU armorers used to create a timed release point in the standard "Hardball" magazine lips to enable use with the H&G #68 bullet. Colt just took a page from them and started to specify the modification for their vendors because it also worked well with hollowpoints. I am, however, responsible for them offering the Wolff 11-pound spring in their 7-round magazines as an option.
I collaborated with Check Mate on the development of their bullnose follower and provided them with the dimensions for a gauge to check and set the final release on their full tapered GI reproduction magazines.