In addition to the pic, Fred posted the differences...


L to R
- short action (7/16" lugs)
- short action controlled round feed(1/2" lugs)
- long action (1/2" lugs)
- new short action heavy magnum (9/16" lugs)

The new heavy magnum bolt head requires the new relieved front baffle,(shown to the right) and also a longer firing pin. The new heavy magnum bolt head is replacing the short action CRF bolt head, as the CRF is not needed on the new center feed magazines for the WSM line of cartridges.