How many are also uniforming the flash holes to ensure they are the same diameter, round, and without burrs or other obstructions from the manufacturing process. Even if youre using brass that hasnt already had the flash holes deburred, i doubt youll notice any accuracy difference after uniforming the flash holes but by all means try it and see. Even with highquality brass from lapua, norma, and rws, occasionally you may find one or two cases per box which have a small flake or obstruction in the flashhole. I also take pride in my ammo so i spend time tumbling the cases until they sparkle. Learn exactly what happened in this chapter, scene, or section of holes and what it means.
I have noticed over the years that different headstamps have flash holes of varying sizes, sometimes even among the same headstamps. Small steps, winner of the schneider family book award. Uniforming and chamfering the flash holes video lesson. The curse began when his greatgreatgrandfather, elya. Green berets ultralight bug out bag with gear recommendations duration. Army marksmanship unit usamu has published a series of reloading howto articles on its facebook page. While this is the least expensive method, it has many shortcomings and inconsistencies. I also found that uniforming primer pockets in hunting rifle brass to be a waste of time. Precision rifle handloading reloading online course. The book centers on an unlucky teenage boy named stanley yelnats, who is sent to camp green lake, a juvenile corrections facility in a desert in texas, after being falsely accused of theft. Lets talk about precision reloading archive m4carbine.
The tapered pilot works great on all my calibers suitable for deburring the flash holes. The purpose of the flash hole then called a vent hole or sometimes referred to as a nipple or cone, or in cannons called the touchhole, was to channel a bit of powder from the external to the internal through a short tube or vent. Personally, i dont do diddly squat with my flash holes. Holes is a 1998 young adult novel written by louis sachar and first published by farrar, straus and giroux. Two essential ar15 case preps midsouth shooters blog. January 18th, 2020 flashhole first aid clearing obstructions in flashholes. I think deburring flash holes is one of those things you can do on a really accurate varmint or target rifle, but, for the average hunting rifle, its not worth the bother. In his acceptance speech for the boston globehorn book award, one of the many prizes he has won for the book, sachar told the audience, holes was inspired by my dislike of the hot texas summer. Graybeard outdoors view single post cleaning flash holes. I tried primer pocket uniforming for a while and it just didnt make any difference at all.
Man, it has been a long time since i posted a thread. Looking back, the first flash holes were incorporated in the design of muzzle loading firearms hundreds of years ago. Forums user list calendar active threads forum help previous thread. A secondary benefit of flash hole deburring is that it may help you recognize offcenter flash holes, which you will see occasionally in various lots of brass. Are you drilling out your primer flash holes for bp. Be certain you set the locking screw when you determine the proper depth to remove the burrs at the flash hole to avoid removing excessive brass from the case head area. Worst cases are from bertram in fact, these are so bad we refuse to use them any more. Warren page recommended enlarging flash holes in his book the accurate rifle and i do the same. I use a lyman uniformer for the pocket which has a preset stop collar to sammi specs and i also use a flash hole uniformer to make sure the flash holes are all the same size. It features a boy named stanley and his journey to find answers about the holes he has to dig. Holes begins with a description of camp green lake, a juvenile detention facility in texas basically, its a place for kids who have committed cri. What started as a small dream has become a multimillion dollar international business selling ammunition, reloading supplies and accessories. Joined nov 10, 2018 messages 19 reaction score 0 points 1. How these cases make it through quality control at a manufacturing facility is a wonder.
I tried uniforming flash holes and the only difference i saw from the exercise was that my fingers were sore after about cases yet werent sore at all when i dont do it. Uniforming primer pockets easy stuff, one time and youre done. New outsidein flash hole reamer for large flash holes. Some may tell you it doesnt help to uniform the primer pockets but i have seen a difference since i started. If you are someone who uniforms their flash holes with a drill or even enlarges them, this is a necessary tool to get a nice smooth and chamfered flash hole so that your powder ignites consistently and repeatably. Reloading record book essential equipment to get started. Primer flash hole reaminguniforming this is a discussion on primer flash hole reaminguniforming within the ammunition forums, part of the m14 m1a forum category. An oversize hardcover large print edition of holes by lou. This post explains how to uniform primer pockets and remove burrs in flash holes. Search the worlds most comprehensive index of fulltext books. This is a discussion on opening up the flash hole within the ammunition forums, part of the m14 m1a forum category. The tool does not enlarge the flash hold provides a small chamfer to the flash hole. If i load ammo for bullseye competition, you can bet i will do every trick in the book to make the loads as accurate as possible, even though it takes a long time and yes, this would include uniforming flash holes.
An explanation for why you might want to consider uniforming your flash holes. Apr 01, 2016 i have be deburring the flash holes, and uniforming the primer pockets in my 45 colts that i use for cowboy shooting for about a year now. January 1st, 2019 primer pocket and flash hole uniforming basics. Brownells is your source for flash hole deburring tools,case preparation at brownells parts and accessories. Bumping shoulders vs resizing to factory specs in a gas gun full length resize. Register log in home forums big game rifles do you guys uniform your flash holes in brass before reloading. We have seen entire lots of brass with visibly offcentered flash holes. Flash holes is a group of independent animators from around the world. I believe punching flash holes is the standard way most companies use when making brass. The bonus to this tool is the sharpness of the cutter. Bench rest shooters have been uniforming flash holes since 1969. I notice most people mention cleaning, and are talking about tools that will do just that.
Flash hole deburring tools case preparation at brownells. It should fit into the flash hole easily but without much play. In cartridge manufacturing, the flash hole is punched into the brass. Once i modified the pilot it slips into the case nicely and centers almost immediately. Primer pocket and flash hole uniforming basics daily. When i say no difference, i mean no group opening up or closing up, no difference in velocity, but i did find that there was a difference in the time it took to load ammo. Flash hole deburring tools case preparation at sinclair inc. A uniforming tool is used to make the depth of each primer pocket consistent. As spence writes in his book, after conducting numerous tests of various size flash holes, the drilled flash holes gave the best accuracy. The 21st century fhdct stops cutting once it bottoms out on the case and does not require a lot of effort to. This will cause shottoshot differences in primer flame fronts, causing inconsistent pressurevelocity and, thereby, loss of accuracy. Years ago i ran a bunch of tests on prepping brass and found, for myself anyway, that uniforming flash holes in brass used in hunting rifles gives results way out of proportion to the effort needed. Flash hole deburring top rated supplier of firearm.
Those wanting the uniformity of primer pocket and flash hole dimensions modify what the factory makes. Flash holes vary a few thousandths in diameter and using a small drill bit to open them up to the same diameter is easy. The most detrimental to accuracy are the irregular breakouts and burrs on the inside. Premium brass like nosler brass already has the flash holes uniformed so if youre using that or similar brass, you dont need to do anything more to it. Like flash holes, primer pockets are mass produced and prone to small dimensional changes. Uniform thee flash holes again, some have very large burrs stuck inside, and might even misfire if not done. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The book holes, by louis sachar, tells the story of 14yearold stanley yelnats, whose family has been cursed with bad luck for generations. The flash holes, therefore, are of different sizes and shapes. I think having the flash holes perfectly centered is more important and some case brands have a lot of cases with off center flash holes which i discard. Holes is a popular book by author louis sachar that has won several awards. Ive found that i get a lot more consistency in my groups and fpss with the flash holes deburred.
253 478 238 990 476 466 963 801 914 283 1440 9 971 1557 101 585 1314 864 1093 1408 298 421 381 803 407 256 475 966 1217 405 1078 439 569 516 33 859