How much headspace is too much

An example: The split I am referring to is one you might see albeit infrequently when you fire form cases like to make 6mm Dasher cases from 6BR brass, etc. Editor: Robert, I think you are absolutely right, but this is just an example of the artist who created images for the video not getting things quite right. Seems very prudent to get your gauge s when you get your reamer, i. That author seems to think that the headspace for a rimless cartridge is from case base to shoulder-neck junction…NOT.

Name required. Mail will not be published required. Leave this field empty. January 8th, Headspace What You Need to Know Can you list all the serious problems that excessive headspace can cause? Permalink - Videos , Gunsmithing. Robert Whitley says:. April 20, at am. ELR Researcher says:. March 20, at pm. What has been said is 2 or 3 under is sufficient. Your 1. It does make a difference because you have constantly said headspace when you were measuring the brass length.

With all the different brass you have, it will probably take a while to get it all in order. The 8 short will not cause a blowup, just maybe a incipient separation. Just shoot it. Take a knee was simply answering the questions you weren't asking, but needed to. You were taking the scenic route to a very simple solution, namely proper sizing.

You were spending all your time analyzing, when you should have been sizing. Sorry, maybe it's a problem with semantics are we are all talking about the same thing but using different words. However, I am here just looking for help and I take offense at the condescending tone and will react to that every time.

For that I apologize. Anyhow, I finally got my press mounted on my new reloading bench this evening. I ran the die down until I got the. I then ran 10 more cases through the die and all came out exactly the same so I quit for the night. Thanks for confirming that it is ok to shoot the.

Joined: Dec SE Okla. If you set the die up according to the manufactures instructions what is the measurement??????? Wipe your mouth, there's still a tiny bit of bullshit around your lips. Joined: Jan I"d actually bump it to -. But I"ve yet to have an issue with -. Once fired factory brass. As noted somewhere else IE how work hardened it is. We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back Whiskey Tango Foxtrot, over Hey Jeff what is the measurement if you was to screw your dies down to where the press cams over like the instruction read.

I understand that every set up will be different just a wondering thought. NEver done it that way. Always measure fired brass with a gauge or start sizing just a bit at a time until the bolt closes easily enough on a bolt gun. I don't think I have a single die that bottoms Originally Posted by Oklahoma. Sounds like you are off and running. Lots less headaches from now on. I, like the "other" Jeff, do not have a die that is down on the holder.

Way too much for anything I have. My two Colt Lights are close because of their tight chambers tho. My cousin has a Win FW that takes a lot of sizing. It is a and he was having fits with size. I told him to crank the die down, still no luck. He brought it to me and my die would do just enough to make it work. He found another die set and it worked too.

Never seen another that tight. I ran about cases through the die tonight and they all measured a consistent 0. I have no idea what happened to get so many cases that were out of tolerance like that.

At least I can now continue my daughter's shooting education before she goes home to Colorado. I had been teaching her how to shoot, range rules, etiquette and such back in July and now before she goes back to Colorado I was trying to show her the steps to reloading. Feels good to just do "stuff" together since she has been busting her butt taking me back and forth to the hospital for most of the last 6 months.

Good times. Sweet isn't it? I have three daughters and they're the light of my life. I'm not sure what I will do when they are not here every day.

You are doing her a lifetime favor by this teaching. Print Thread Switch to Threaded Mode. Key: Admin , Global Mod , Mod. All Rights Reserved. Powered by UBB. PHP: 7. Previous Thread. Next Thread. How much headspace is too much? Re: How much headspace is too much? Originally Posted by AlaskaFE I am trying to answer for myself is at what point is headspace too large and it is now dangerous to fire that round? Codiekfx said:. Reactions: McCrazy , lash and Codiekfx Just googled this method and your spot on with your recommendation.

I had never heard of it before and should have done my research before posting that bone head post. Good info please forgive and forget what I said carry on. MrSmith Private Full Member. Any resizing gap due to a "bump" dimension is at the rear of the case between the casehead and boltface.

When fired, gas pressure obturates the brass and seals it to the chamber walls. The stretch can't go forward if the shoulder is in contact with the chamber. The case body is sealed to the chamber walls so that portion of the case is relatively fixed. The stretch goes toward the boltface gap and is concentrated in the very short section of the case at the rear of the supporting chamber wall and forward of the case web.

In your situation, depending on how tight or loose your specific extractor is there could be gap on both ends of the case. When loading new cases I use an extra step. As you note, some new brass can be quite short. I have found some. That is a lot of stretch to force into the short unsupported portion of case just forward of the web.

Initial stretch should go forward where it is distributed over a longer portion of the case. If not, the case, just forward of the web, will be strained, slightly thinned and a permanent weak zone created. My new cases get slightly squeezed with a set of padded pliers so that the upper body, just below the shoulder, is slightly out of round. On the first firing the bolt will force the case into the chamber with enough drag to overpower the ejector spring so that the casehead is in firm contact with the boltface.

When fired the case becomes formed to that chamber. I only do this on the first firing of a new case. I had not thought about his Trailboss method of fireforming but I think it would likely be better than what I do with squeezing the case. Probably more evenly distribute the "stretch" along the case.

As to dangerous, not unless the Trailboss is compressed, or so I'm told. I have never compressed it. One of the desired results of loading subsonics is that the bullet actually comes out of the barrel and on lighter loads of Trailboss a stuck bullet can occur. My assumption would be that a stuck bullet would generate the max pressure for a specific load combination. I would probably go a bit lighter for fireforming, but I have no experience using this technique.. And I will be checking to verify the bullet does come out.

Thank you, MrSmith. Last edited: Nov 26, A casefull of trailboss makes maybe PSI. Bring some kids with you and let them shoot your big gun. Win, win. MtnCreek Unreconstructed Full Member. Jan 6, 10, 19,