The synth stock on my M700 SPS DM in .308 lasted about 3 weeks. The aftermarket urethane one that replaced it shrunk the groups down from 5"+ to 1.5" average groups and so far is still going ok...
Opposite experience with my 700 SPS DM .243, 1/2" with corelokts from day 1!. Gave it to my sister in law and she's dropped more deer than me this year!:pissed off: