So you decided to adjust the fire control mechanism on a rifle and then decided to test it with live ammo?????????
Are you friggin kidding me????????
Here's your sign!
I wouldn't think the gun should be able to adjust so loose that it can go off.
From the manual...
WARNING! FOR SAFETY REASON DO NOT ATTEMPT TO REDUCE THE TRIGGER PRESSURE BELOW 10 NEWTONS (2 LBS).
Did you check the trigger pull weight before you decided it was a good idea to test it with live ammo? I suspect that yours was adjusted to about a half pound or less.
Not trying to shift the point of blame, but I do find it interesting that the manual never gave me the same great advice on testing the actionyou guys did.
From the manual...
Both the sear engagement and safety are set at the factory and need no adjustment of any kind. CAUTION! The sear engagement, safety and other components of the action are precision mechanisms, which were properly adjusted at the factory. They should not be altered, modified or changed. Modifications ot the firearm may decrease its safety and increase the risk of serious injury.
And they on top of that they also provide you with another brochure that includes safety rules for you to follow.
#1. NEVER POINT A FIREARM AT SOMETHING THAT IS NOT SAFE TO SHOOT. You pointed it at a truck.
#2. ALWAYS TREAT A FIREARM AS IF IT WERE LOADED. Yours was.
#5 KNOW THE SAFETY FEATURES OF THE FIREARM THAT YOU ARE USING, BUT REMEMBER: SAFETY DEVICES ARE NOT A SUBSTITUTE FOR SAFE HANDLING PROCEDURES. You tested trigger adjustments with live ammo.
I think that Sako gave you plenty enough print material to keep you from doing something like this. The blame is yours and no one elses. Hopefully you learned from this and will never do something like this again.