Hello all,
I have a question.. I wanted to watch the resizing the brass again to make sure I was doing it correct. I know there are many ways of resizing the brass and headspace as well. I have a Remington 700 nothting special just a regular ADL version I bought a while ago.
Went out to the range and saved my brass. After removing the primers I get
First time fire brass: 1.6235 from my understanding I have bump it 0.002 back and it should be 1.621.
I seen other videos where they take out the firepin and the ejector from the rifle and bump the should back little by little until the action just falls without any issue. I tried that way and my final measurement came to
1.6245.
Which one is the correct measurement? just taking the 0.002 from fire case or taking out the fire pin and ejector and having the slide fall without any pressure?
thank you for all the great info. I did buy a annealing a couple weeks back. . Keep up the great work.
Hey! So for this, if you haven’t seen the video in the beginner course notes, which you can find on the additional learning aides tab on the main home page.
You will fire your cases, come back home, UNIVERSAL deprime—do not use your sizing die to deprime for what we are doing here, because we are trying to decide what to do to your cases and you don’t want to prematurely bump your shoulder back if the case isn’t fireformed yet. The reason you do this first is because when you go to measure your headspacing with your caliper and comparator, you do not want to accidentally get any primer protrusion added into the length of your headspace.
Next, clean your chamber out completely.
Then, remove your ejector and firing pin from the bolt.
Insert the case. If the bolt drops, it is NOT fireformed. This means, do NOT bump back the shoulder on your cases. You can neck size for just this fireforming operation or use your full length sizing die, back it out a few turns. Just make sure you are not bumping and that the neck is being resized. If you get growth in your headspace after this, it’s fine. We are trying to fireform anyway and need the growth. Just ensure it fits within chamber and can be fired.
If the bolt DOES NOT drop freely, this means your case IS fireformed. Go ahead and bump back whatever you’d like to!
Hope this clears things up!