is there a difference in the size of rifle, pistol, large or small primers flash hole ? are they standardized ? if so what size should the flash hole be ?
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What Size Flash Hole ?
- Thread starter PistonPete
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Re: What Size Flash Hole ?
Sinclair says standard flash holes are .080 for everything but PPC and Lapua Grendel brass (maybe other BR brass ??) which is around .062. There is some variation ; that is why I use a flash hole deburring tool to uniform flash hole id and get rid of burr on the inside of the case.
david
Sinclair says standard flash holes are .080 for everything but PPC and Lapua Grendel brass (maybe other BR brass ??) which is around .062. There is some variation ; that is why I use a flash hole deburring tool to uniform flash hole id and get rid of burr on the inside of the case.
david
Re: What Size Flash Hole ?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MitchAlsup</div><div class="ubbcode-body">223/5.56 Guatemalen surplus is 0.060 flash holes. </div></div>
Yeah...Guat 5.56: killer of more depriming pins, than people.
Chris
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MitchAlsup</div><div class="ubbcode-body">223/5.56 Guatemalen surplus is 0.060 flash holes. </div></div>
Yeah...Guat 5.56: killer of more depriming pins, than people.
Chris
Re: What Size Flash Hole ?
There is no differance if you look up Sinclairs catalog there is a flash hole reamer and its .062 if I remember right . it doeas small and large even 338 lapua . I did some last night
Bill
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Piston Pete</div><div class="ubbcode-body">is there a difference in the size of rifle, pistol, large or small primers flash hole ? are they standardized ? if so what size should the flash hole be ? </div></div>
There is no differance if you look up Sinclairs catalog there is a flash hole reamer and its .062 if I remember right . it doeas small and large even 338 lapua . I did some last night
Bill
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Piston Pete</div><div class="ubbcode-body">is there a difference in the size of rifle, pistol, large or small primers flash hole ? are they standardized ? if so what size should the flash hole be ? </div></div>
Re: What Size Flash Hole ?
thanks for the tip on Sinclairs they have a tool very similar to one i made several years ago, the difference is that i use the one i made in a RCBS primer pocket swaging die, and it has a taper so that the inside of the flash hole looks like a funnel, this inside 45 degree taper distributes the flash more evenly, something i learned from building muzzle loaders. the velocities are more consistent and somewhat higher than a standard unburred flash hole.
i am thinking about making one for my RCBS case trimmer for nonmilitary brass, my only draw back is that it will remove brass, whereas the swaging tool impresses the metal. i also use the .080" F.H. hole, for 5.56mm NATO which is the only caliber i reload for..., except of course my .499LWR that also uses the .080" flash hole and inside taper.
thanks for the tip on Sinclairs they have a tool very similar to one i made several years ago, the difference is that i use the one i made in a RCBS primer pocket swaging die, and it has a taper so that the inside of the flash hole looks like a funnel, this inside 45 degree taper distributes the flash more evenly, something i learned from building muzzle loaders. the velocities are more consistent and somewhat higher than a standard unburred flash hole.
i am thinking about making one for my RCBS case trimmer for nonmilitary brass, my only draw back is that it will remove brass, whereas the swaging tool impresses the metal. i also use the .080" F.H. hole, for 5.56mm NATO which is the only caliber i reload for..., except of course my .499LWR that also uses the .080" flash hole and inside taper.
Re: What Size Flash Hole ?
Great
The one at sinclair has a seater in the priming pocket then the reamer bores the id of the hole from the base up " the opposite of the one youhave pictured."
I use lapua brass only and this is bored not punched so there is not the issue with the internal volcano due to the punching process.
Good luck
Bill
Great
The one at sinclair has a seater in the priming pocket then the reamer bores the id of the hole from the base up " the opposite of the one youhave pictured."
I use lapua brass only and this is bored not punched so there is not the issue with the internal volcano due to the punching process.
Good luck
Bill
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