The best replacement for mag is 300 wsm.

The best alternatives to mag are rated as following:
★★★★★  300 wsm
★★★★  17 hmr
★★★★  30 06
★★★★  clip
★★★  fluid trainer
★★★  300 win mag
★★  mag prime
★★  45 colt
★★  44 mag
★★  mw2
★★  bad company 2
★  308
★  nova warframe
★  338 win mag
★  357
★  loki warframe
★  gern
★  cod
★  30-06
★  .357 mag
★  excalibur
★  killzone 2
★  45 long colt
★  volt warframe
★  7mm mag
★  45 acp
★  22 lr
★  nyx
★  .338 lapua
★  22lr
★  bmf
★  22 hornet
★  .40
  mig
  bfbc2
  300 ultra mag
  357 sig
  wind trainer
  loki
  22 long rifle
  338 lapua
  modern warfare 2
  .300 wsm
  spokes
  7mm 08
  oberon
  454 casull
  7mm-08
  357 mag
  eheim
  7mm rem mag
  .308
  mochte
  battlefield
  warhawk
  375 h&h
  .44 mag
  270
  homefront
  .45 acp

Your alternative for mag is not listed? Suggest!
Speaking about mag, one probably shouldn't forget about playstation move.

Other search terms related to mag and their ratings are:
★★★★★ playstation move
★★★★ bad lever
You have in mind a companion for mag and it is not yet here? Propose!



Google Trends

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mag
300 wsm
17 hmr