it works with 22lr or magnum, just not the hornet. The difference is in the magwell metal, but it will NOT work with the hornet. The long rifle and the magnum metal length changes.
Not to hijack your thread, but the stock can be easily altered to fit a hornet, 77/357 or 77/44 I have a 77/357 fitted to a boat paddle stock from a 77/22 mag