Basic gas check making tools
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- Опубликовано: 29 авг 2014
- Making 32 cal gas checks, from 0.3mm ( .011" ) Aluminium flashing. These are the basic tools needed to make gas checks. Wad punch and forming tools. You don't need the arbour press. A soft hammer would do the job just as well.
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Ingenious . is there any chance you might offer to sell these tool sets for making gas checks in .311" or .430" ?
Interested in the stamping press you're using. Can you tell us more about it?
+Todd Griffith
Hi Todd. That little arbour press, I made when doing night school at TAFE. It was one of the exercises in machining.
Hi Tony thankyou for the video
I'm trying to reload Hawkesbury River 185gr 312 cal (303) and the accuracy is woeful.
I'm not using gas checks, could this be part of the problem?
It performs quite well with full metal jacket.
Hawkesbury River bullets are very hard (Monotype?) and have to be a perfect fit in your barrel to even give some accuracy. I used to use wheel weight alloy in my old SMLE, cast in the Lyman 314299 mould and gas checked, but had to keep the velocity below 1350fps, but the rifling was worn. Now in the HRBCo Martini I have, I shoot the same 215gr GC bullet, but cast from Lyman #2 alloy and with aluminium gas checks. They shoot best at about 1400fps. The barrel is a four groove .312" groove dia and I size them to match that. Lead bullets HAVE to be groove size or + 0.0005" more. You need to slug the bore or better still have a chamber cast done and measure the throat diameter and match the bullet dia to that. That's the secret and not too hard with the alloy. Hope this helps mate.
Well Tony I think you have just inspired me to get out into the workshop and make this simple tool, it could not be much simpler, and the good thing is that I can make gas checks the right size for my .303 instead of using what is available, the only thing I will do is to make a two piece punch to make the disc blanks from copper, what velocity have you used these up to ?
Hi EF. I've only been able to shoot them a couple of times and the load I'm using should give around 1250-1300 fps. Haven't tried for top speed, but I would think that the metal would be able to handle it.
Good stuff Tony! Im going to have to crank up my old Atlas and make some of these. Its just about embarrassing to say gas checks are running around 6 cents each in New Zealand atm... Hey do you treat the Aluminium with anything afterward to stop any oxide from forming? :-)
Why don't you do just that, Joe? It's fun. No I don't treat the metal, though after it's been through the lubrisizer, there is lube on it that I don't wipe off completely. Just load them and shoot them. Life's too short to be worried about trvial things. :)
Would these work for .308" bullets?
Aluminium gas checks work on .308 lead bullets, but these particular ones are a little too big for .308. They have a smaller shank. Any gas check should be a fairly close fit to the bullet shank.
im going to make gas check for 270 win .
the shank size is 6.43 mm so for making a disc what punch size i should use ? do you think 7mm or 7.5 mm punch will do the job ? or maybe 8mm punch .
i appretiate your help
Your majesty 😉 A 9mm wad punch would be just right.
@@Afro408 thank you sir 🙏🙏🙏
@@bagheri4 You are very welcome, my friend. ☺️ I have since modified my forming tool and made the shank diameter slightly smaller, so that the gas check sides don’t get smoothed out and are not so parallel. This means that the slight burr on the disc is still there and when I size the check to the bullet, this burr gets a better grip on the bullet shank. As an experiment, I did make a couple of different gas check makers for a friend, similar to the ‘Free Checks 2 & 3’ , but I prefer this type, as they are very simple to make and remake if the check doesn’t come out right. Yes, it’s a bit slower, but I waste far less aluminium sheet and besides, it’s therapeutic. 😉
Regarding my last reply, see if you can get a 3/8” diameter wad punch, that may be better for the .270 bullet. I just worked out, that with a 9mm disc, you would be left with a side height if only 1.27mm.
@@bagheri4 For a bullet shank size of 6.43mm, I would make the forming tool with a shank diameter of 6.47mm (min) and with a disc size of 9.52, this would give you a gas check that is about 1.53 deep. Remember to put a slightly rounded corner on the forming punch, to prevent it cutting through. If you’re using the same 0.3mm thickness aluminium, then the forming die minimum diameter should be 7.17mm to 7.2mm.
Now that I have modified my tooling, I don’t get any torn gas checks anymore. 😁
Tony,
What size punch do you need to cut your disks for a .358 cal. gas check?
Hi Kenneth. Thanks for the subscription. You would need a 7/16" or 11mm punch for that cal, if you're making the gas checks from 0.3mm ( 0.012" ) material.
I have an old Logan lathe and am thinking of trying to make one of your gas check makers. I have a Freechex III but I understand that the fellow that made them is no longer in business. Come on over and we'll go shooting.
Ken
Go for it. They are easy to make and I found out later, that mine is the same as the Freechex I.
Hi Tony
I’d like a set go 30/30,
Do you sell sets ? Please
I tried your email but not found?
Hi Max. Sorry, but I'm retired now and don't sell any sets. A Freechex III ( www.freechex.net/ ) is a better option.
Uncle, do you have a drawing of this set of tools? I want to process
Nephew! I don’t have drawings for these dies as there are too many variables to do with skank diameter, material thickness, calibre and so on. You would need to contact a toolmaker in your area and get him to help you. 😁
@@Afro408 Uncle, the country I live in even commits crimes when playing with toy guns, let alone this, my love for guns has reached the point of madness.
G'day mate would u be interested in making a gas check maker in 8mm Mauser if so how much would one cost ?
Hi Nathan. You can contact me on...... tony@nickalguns.net and I can answer you privately.
ل.ربظعش.سبعين
Interpretation please anyone?🤷♂️😅
Hast makes waste :)
Hi Joe. It does indeed! 😁
One of the fastest oxidizing metal: aluminium.
One of the most abrasives metal oxide: aluminium oxide (electro-korund) Al₂O₃
Fastest way to kill your barrel: aluminium gas check