Gundog01
I believe these were made to strip from normal 8x57 clips, so if you can try them it will save loose cartridges rattling in your pocket during a hunt!
Would like to see your 'modern reloading' data when get around to it, rather interesting cartridge the 11.2x60mm!
Woodleigh also makes bullets for this calibre - item 67
http://www.woodleighbullets.com.au/bullet-lists/traditional/405-458-list