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The Best Flash Hole Deburring Tool of June 2021 – Reviews and Comparison
Last update on 2021-06-24 / Affiliate links / Images from Amazon Product Advertising API
Last update on 2021-06-24 / Affiliate links / Images from Amazon Product Advertising API
Today’ article, I thought I’d talk a little bit about flash hold deburring tools. I know exciting right people reload for different reasons: some folks reload to save money on ammunition. Other folks, like myself, reload to try to eke out as much precision as we can out of each cartridge and, in my opinion, in order to get that precision and smaller group sizes is to make each cartridge as identical to the next cartridge, just as humanly possible.
So whether it’s the trim length, the bullet seating depth, the headspace, whatever it is, if I can get each cartridge identical, I feel I can get better groups out of those cartridges, and that includes the flesh hole that is down there at the bottom of the primer Pocket now Sammy specifications for the flash holes for a rifle cartridge that takes a large primer. The flesh hole should be point: zero, seven, eight inches, two point: zero, eight two inches in diameter for rifle cartridges that they pay a small primer, the diameter. The flash hole should be point: zero, seven, four inches, two point: zero, seven, eight inches; okay, just a little bit smaller.
Now during the manufacture of a case, a number of things can go wrong with the flash hole it could be off-center. You know from case to case flesh hole, may not be exactly centered. Some may have little burrs either on the inside or on the rim of the flash hole which would effectively change the shape of the flash hole and they could be different diameter from case to case, so the flesh hole, deburr tools can either correct or detect. Each of those three issues with a flash hold that would make them not not the same or not consistent. Now, o flash hold deburring tools are very similar. They all consist of a shaft at one.
End of the shaft is a cutting tool at the other end of the shaft is a mechanism of some sort for either mounting it to a handle or a powered device of some sort, and they have some mechanism for indexing the case either in or out so That you get the right amount of cut without taking too much material off of the flash hole itself now the indexing device here there’s a couple of few ways to do it. One is with a bushing, bushing style cutter, there’s also a universal style, which is this cone shape that you see here and there’s. Let’S talk about the 21st century tool here shortly. It does things a little bit differently with the universal style cutting tool. It doesn’t matter what caliber case you’re going to use it with the the diagonal or the cone shaped indexing piece here will fit regardless of the caliber.
The case neck will meet the cone here at some point on the cone. So it doesn’t really matter what caliber it is with a bushing style, flash hole cutter. You have a the cutter with a shaft and the cutting piece at one end, this one’s on a handle, and you would need to get the appropriate bushing for the caliber that you’re using now. This is a 30 caliber bushing and it fits over the shaft like that, and then the bushing itself then would go into the mouth of the case like like so now. So, with the bushing style, you have to have the appropriate bushing for whatever caliber you’re, using with the universal style.
You just have this cone-shaped device here and it’ll fit any any caliber now the purpose. For that we look at the cutter head here. We have the tip of the cutter and that, basically is what goes in into the flash hole and divergence the flash law any any pieces of any burrs or whatnot inside the flash hole. Get cut out by that. This also will make sure that your flash hole is the appropriate size. Now most cutters have a tip that is point zero, seven, eight inches in diameter and after remember, with the Karcher cases that use the large primer, the size of semi sizes from point seven, eight inches to point eight, two inches so 0.307 zero or point zero.
Seven. Eight, rather, it would be on the low end of the flash hole size for a large primer case. Small primer case goes from point: zero, seven, four inches to point: zero, seven, eight inches, so a point: zero. Seven eight inch head on the cutting tool will be on the high end of the small primer case. Now, in my mind, the actual measurement of the hole itself isn’t as important as the fact that each case has the same size hole so by using the point. Zero seven eight inch cutting that’ll make sure that not only am i within stanley standards for either small primer or large primer cases, but it will also make sure that my flesh hole is at least point zero. Seven, eight inches on all of my cartridges.
Now most cutter tips on flash hold, divert tools right below the tip. Then have this angled section right here and that angled section will divert the rim of the flash hole on the inside and can also provide a little kind of a radius edge to the inside. Of the flash hole inside the case now, the fact that that angled cutter is there means that if you push it in too far, you may cut more material off the inside of the flash hole than you want it to the idea here is we want everything To be uniform, we want everybody to have the same, the same size, flash hole without cutting. You know more material off of wan and less material off another.
That’S what the indexing piece is for. If I take my this is a 3030 Winchester case. I put it in and I insert the tip of the flash hole cutter into the flesh hole and what I can do is take the cone-shaped piece here and put that up against the case mouth and then I would tighten that down that way. Taking that down here that way, I know that the cutter will go in the same amount on every case that I use it on. Okay. That is, of course, assuming that my cases have been trimmed and they are all the same length. If I have some cases that are shorter, this is going to go in further on those cases a longer case that won’t go in as far so that angled piece on the cutter is either going to cut more of the flash hole or less depending on whether The case is longer short, so if you’re going to use this kind of indexing mechanism, you want to make sure that your cases are all trimmed prior to using the tool to deburr the flash hole. Okay, now you’ll notice that I have you know a little bit of trouble on some of these to try to get the total into the flash hole.
Okay, that’s because you know the tool goes in and it kind of you know can go back and forth move around inside the case, and I have to kind of feel for the flash hole until it finally goes in okay, that’s the problem with using the universal Style, flash holder tool with a bushing style since the bushing is exactly the right size for the case mouth. It will prevent the tool from jiggling around like that. It’Ll it’ll guide the tool straight into the case and that will guide the cutting tool straight into the flash hole.
So let me go ahead. It’S justice the same way I’ll, put the end of the tool into the flash hole and then I’ll insert the bushing until it comes up against the case mouth and then I’ll tighten that down okay now, not only do I have it indexed so that it goes In the same amount on each case, so maybe it’s cases trimmed to the same them out, but it’ll also guide the tool directly into the flesh hole because it’s this bushing here now kind of keeps that the kit, the cartridge or the case straight. And it goes right into the flash hole I don’t have to kind of hunt for it, because the the tool won’t jiggle around in there it’ll go straight right in and the tip goes right into the flash hole. For that reason, the universal style, flash hole, deburr tool, isn’t really recommended for a powered tool like if you’re using a case prep center or an are CVS or Lyman case prep center.
That with the powered device is where you can take an eight thirty to thread it tool screw that in and then you know, it’ll turn the tool for you and you put the case on with with the universal it’s kind of hard to get the tip of The cutter into the flash hole on a powered device, whereas if you had a bushing style, deburr tool on a powered device, it’s a whole lot easier to use because the it guides it directly into the flash hole. So if you’re going to use a power device, you probably want to use a bushing style deburr tool. Now these are this: is the sinclair, bushing style, part 2. I also have the sinclair universal style deburr tool, and it has the cone, just like the Hornady rora lineman. Deeper tools would have the problem with these Sinclaire tools is that they are not threaded on this end for a 32.
So if you have like a RC, be a slime and Hornady powered case prep center, you can’t really attach this to a power device like that same thing, for the the bushing style from Sinclair. Now you could, probably you know, fit it into the Chuck of a drill, although I don’t, I don’t recommend using a drill for this kind of thing. The Hornady lineman and our CBS Universal and bushing style tools do have a 832 threading on the end. So you can actually put those into a a tool now the quantity and lineman, as far as I know, only have the universal tool. Our CVS does have a bushing style tool. It does have the 832 threading onion.
You can get the are CVS bushings, the RCBS bushings by the way, also fit on the Sinclair, whereas the RCBS bushings do not fit on the lineman or the Hornady universals. Otherwise, you could buy a universal and then just switch out. The the universal cone-shaped thing here for the for a bushing but the last the bushing doesn’t fit so our CBS does have a booking style tool like this that the bushings fit on and you can put it into a power power case prep center. So one of the in Lyman only have the universal. Our CVS has the universal and the bushing style and are able to be powered. Sinclair, has the universal and working style, but are not for power. Now the 21st century deburr tool is a little different than the others. It’S you know again. It has a shaft 4 and a 1 into the shaft. It has the divert tool, but you’ll notice on this one. It doesn’t have the angular or the angled part of the cutter, it’s just a 90 degree cutter here. It has the point. 0 7 8 inch tip and it comes straight down and has this flat area here, which also has a cutter on it. It also has a bushing.
The bushing is a little different. It’S a much longer bushing. The bushing on the 21st century tool is also beveled, whereas the bushing on the RCBS and sinclair is kind of a 90 degree cut here. So it it’s a lot easier to guide this bushing into a case than it is with the sinclair our CVS, and that also makes it easier for the 21st century tool to be used with a sized case, because a size case may be a little bit less Than 30 cal – and it may be difficult to get this – the squared off bushing into a sized 30 Cal case, whereas the beveled bushing with the 21st century makes it a whole lot easier to do that now, you’ll notice that the 21st century case doesn’t have or Doesn’T appear to have any way to index the case? Well, the fact that this has a squared off cutter at the top here means that it’s it can be indexed to the webbing or the lore of the case itself.
So when you put the decoder in it’ll only go in so far and it’ll stop at that point, you won’t won’t go in any further. It doesn’t radius the the rim of the inside of the flash hole it just makes for your flash holes, the right size and it devours the inside of the flash hole, also deburr the outside of flash hole but doesn’t put a radius trim on there. That’S really the only the only thing that it doesn’t do, but the nice thing about this is it doesn’t matter what size your your? What your trim length is on your cases, so you can take untrimmed cases and use the 21st century tool and not have to worry about whether or not your you’re cutting too much material off or not, because it doesn’t have that angle piece on there and doesn’t Need to be indexed to a trimmed case. Another nice thing about the 21st century tool is that it comes with this quarter, inch shank on the end here. So if we wanted to use say a battery-powered screwdriver sits in there nicely, so you can use that on a powered powered environment.
It’S very quick! You can very quickly deburr your flash holes, screwdriver battery-powered screwdriver. Now the shank comes off screws off and underneath is an 832 threaded piece here. So if you have like an RCBS, Hornady or Limon power or case prep center, you can still use this in in those in it because they it’s a standard, threading 832 and it will fit into a powered device like the lime, CBS or Hornady. So it gives you a lot of options. You can also take this piece really, since it’s 8:32 threaded and you know, put a different kind of tool in there. I can put a brush on there and I use my brush, then my battery-powered screwdriver. So it’s had a lot of advantages: the 21st century tool, no matter what so you know whether your case is a trimmed or not. It doesn’t matter whether you’re gon na use a battery-powered, screwdriver or a power case Center, or if you want, you can put a handle on it again. Those handles are threaded great thirty-two and they fit just fine on the 21st century tool. Okay, so 21st century.
As allah has several advantages as far as flash whole deburr tool, the downside of the 21st century tool is that they’re 30 bucks apiece and you have to have one for every caliber that you’re reloading. I have three of them. I have one for 338 one for a 30 count, one for twenty-two cow. Now you would think that you could buy one complete one for thirty bucks and then just by different bushings, but I’ve looked at their website and apparently they don’t sell them that way. So I can’t can’t really do that be like cheaper.
If I all I had to do is buy a bushing and then replace the bushing on the same shaft, since the cutter is basically the same size, although 21st century does sell some of the smaller bushing. So you can, you can get large or small nut machines, but cutters with there so, depending on what caliber you’re using you may or may not want to get a smaller, smaller cutter. So 21st century tool is a little different than the Sinclair, the RCBS Hornady and so on cutters. They have some advantages. The only disadvantage I find is that they’re relatively expensive. But if you don’t mind, the expense might be the way to go for okay and that’s basically what there is to know about flesh hole, deburr tools.
Well, one thing I forgot to mention: we talked about the fact that the flash hole may not be centered when you’re using a bushing style, deburr tool, if you put it in and the cutter doesn’t go into the hole that hole may be off-center, and you can’t Really correct it with the divert tool, but you can at least detect that you have cases with the flash hole off-center and what I do when I run into that is I’ll. Take that case not put it into a batch cases that I use for plinking or for non precision loads, whereas with my match-grade stuff, I want my flesh holes to be centered, because I want as much consistency from case to case as humanly possible.
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