Larry21556,
The trigger is not a set trigger at all,it is a military style two stage trigger, which was also avaliable on commericial Mausers.The flat spring in the front of the trigger is simply there to take out the initial stage.When you take it apart, you should find a coil spring ahead of the trigger(inside).If you drop a rod(adjusted to length)into this spring, you can limit trigger overtravel to the amount you desire.Sear engagement has to be adjusted by stoning.Trigger pull weight can be adjusted by shortening the coilspring or adding a washer under it.When adjusting this type trigger, it importent to go slowly and be sure there is enough sear engagement to prevent it disengaging from a shock(bump,falling, etc).It is not possible to achieve as light a pull as a set trigger,because a set trigger does not hold against the mainspring.Attempts to do so can very well result in a dangerous trigger.Ammo, is widely avaliable from American sources, 7x57 is known as 7mm Mauser here.
Mike

Last edited by Der Ami; 05/23/13 10:25 AM.