Among custom gunmakers that don't have their own proprietary action, why is it most use Remington 700 actions; and, to a lesser extent, Winchester model 70 actions? The only exception I can think of offhand is Christenson Arms that offers a Sako Model 75 option.
Is the Remington 700 the most potentially accurate action? Or is it just readily available. Why not build a custom gun around a Mark V, A-Bolt, Savage, Tikka, Ruger or Mauser action. Charles Daly sells mauser actions but I'm not aware of any gunsmiths with web sites that use 'em.
Any thoughts or opinions?