Proper fitting gas check
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- Опубліковано 30 тра 2019
- I enlarged gas check punch and made slightly bigger forming pin per request and result is perfect fit on powder coated bullets. I read how people would use tools like gas check expander in order to get proper fit or use a small hammer to get the check on all the way and than size it. The process can result in deformed bullet and it takes so much extra time. The answer is to start with properly fit gas check in the first place.
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All my gas check makers will be used with powder coat. I just figured I would drop that in. Being new I did not know.
Powder coat adds few thousands to the surface and that includes the shank where gas check goes on. I used to put on regular gas check and it's doable but it takes more effort, especially becomes difficult if you have some extra blobs of PC that ends up on the shank. I made it easier to install by widening the gas check a little bit. Another solution is that you can use slightly thinner aluminum sheet like .010 vs. .013+
Great little video! I'm dabbling into gas checks for the first time. I'm using an NOE bullet also. I noticed my checks went on the same way as yours. I wasn't sure if that was too loose or not. Your video gives me more confidence. Thanks!
I found these bullets work really well with my gas checks but other bullets can still spin when seated, they also shoot really well out of 300 HAM'R which has a much slower more suitable twist rate for lead cast bullets.
@@DimaProk My gas checks spin. Perhaps that will change after powder coating.
@@leadsmith5873 Are you punching your own or purchasing from Sages? If you punch your own go up to .014" thick rolls from Amerimax (I found the actual measurements to be around 13+ thousands). As I mentioned with this NOE bullet and several others they work real well with Gibraltar rolls from Home Depot for me. Your mold and alloy might be slightly different, I size them with push through Lee die to .310, it was .309 die that I opened up and they don't spin. Most of the time I prefer to seat gas checks first and powder coat later. Sometimes I seat them later and sometimes I first seat them with a seating jig I made and size them after, this way I know they will seat very solid.
@@DimaProk No I'm not punching my own. I have a box of Hornaday .308 checks that I"m using. They are being seated on an NOE 314 164gr round nose flat point. I'm seating them on an old Lyman 45 Lube Sizer. They seat nice and flat and look squared. BUT, they do spin. I wasn't sure if this was a problem.
They fit much better.
I like the color
:) luv u too
Seems to me that there isn’t an industry standard for gas check grove depth? Thankfully I haven’t had any problems and I’m assuming that everything is doing its job, sense I haven’t had any leading problems. You make an awesome product!
Thanks. You're right, the mold makers don't help either. You have guys like NOE and their 30 caliber shanks are great but than their .356-.359 and .458 and so short! I wish NOE made them just a little bit longer like .085" instead of .065". And there is also Lee and others who make their shanks a lot more tapered while gas checks are not that tapered.
Great job Dima are those your plan base gas’s checks
Nope, just regular ones, but they fill in all the space on these bullets designed for powder coat / hitek so it looks like one uniform bullet especially if you powder coat after. My 300 BLK prefered RCBS like ones you shot with Kenny but my AR in 7.62x40WT likes these and I am glad because it's 5 cavity vs. 2 cavity and it doesn't like RCBS at all! I did make plain base GC maker for 30 cal for customer, I plan to see if it helps accuracy or not for my plain base NOE 153gr HTC which surprisingly shoot pretty accurate as is.
223... if only
I can do 22 cal. Contact info in the description.
Powder coated bullets don't need gas checks though....
There have been plenty of studies that prove that gas checks are not needed and that non-checks powder coated bullets actually have a better accuracy.
@@Tom-yc8jv Care to point to one of those studies? That is not what I read, just the opposite. If this was true, than why pretty much all rifle bullets are designed for gas check? It's actually a lot easier to machine a straight cavity in the mold than a GC one. I will say that I have shot flat base powder coated bullets with good accuracy. The key word here is flat base - not designed for gc. I've also read that perpendicular and flat base is important for accuracy and as you know as you cast bullets some will have a little bit of a nipple from sprue cut and some will have a slight dimple. By putting a gas check you ensure the base is flat and I know that aluminum (or copper) will withstand the pressure much better than lead.
That's a common misconception.
Your rejects look good.