Ben HolmComment

Basic Test Fire Procedures (Semi-automatic Firearms)

Ben HolmComment

This should help you or your gunsmith diagnose problems with your firearm.

In starting, make sure your firearm is cleaned and lubricated properly. All firearm safety rules apply!

Use a sharpie to number each case before firing (near primer). Try to keep track of which side is up when loaded into the magazine / chamber.

Load 1 round in the magazine and fire. If it is supposed to, does the firearm lock back on the empty magazine?

Repeat 10 times. Locked back (Yes/ No)

1            2            3            4            5            6            7            8            9            10

Load the magazine to full capacity and fire. Top off between each round. Does the firearm feed the bullet into the chamber correctly and does it chamber the next round when fired?

Repeat 10 times. (Yes/ No)

1            2            3            4            5            6            7            8            9            10

Does the firearm extract the round from the chamber?

Extract means it pulls the case from the chamber (it may still leave the case in the firearm).

Does the firearm eject the round?

Eject means the case is flung out of the firearm after being extracted.

Bring all fired brass with you if possible.

Bring a minimum of 2 unfired cases with you if possible. If needed reduce the test fires to 9 and 9.

Note if there are any failures and how they occurred. (exe. Did it sound louder, Kick less, etc.)

Try to take video or pictures of the failures. (Try to have a video watching the ejection port)

Try different types of ammunition. If possible, always use good quality, new, factory, brass ammunition.

Note ejection angle and distance (With shooter in the middle and each circle approximately  1 stride). Is it consistent?

Notes: