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swaging smaller flash holes (Read 2360 times)

RJM Full Member Offline Posts: 212 Location: State of Confusion Joined: Oct 15^th, 2006	swaging smaller flash holes Apr 10^th, 2018 at 9:13pm	Print Post
	I want to play with smaller flash holes in my cases & have heard of Fred Cornell's swaging tool. Does anyone have one? Are they still made? Can anyone supply some pictures so I can make one? Regards, Ron


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Myers Senior Forum Member Offline Posts: 391 Joined: Mar 5^th, 2013	Re: swaging smaller flash holes Reply #1 - Apr 12^th, 2018 at 10:41am	Print Post
	Which caliber case you want to try smaller flash holes?


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kkid66 Full Member Offline Posts: 186 Location: central tx Joined: Jun 4^th, 2014	Re: swaging smaller flash holes Reply #2 - Apr 12^th, 2018 at 6:52pm	Print Post
	Fred Cornell made the one I have. It uses a .059 +/- Lyman decapping pin to swage the flash hole around. For best results use brass that has not been chamfered on the inside. Use a little lube on the pin and bump swage it to size. I use a dorman p19C freeze plug with a hole drilled to push brass back off the pin. For best results I used a .069 reamer to make all my flash holes exactly the same size (think Lapua). I also have a Hoke pocket reforming die by Kermitool that will swage a rifle primer case to pistol primer case depth and uses a gage pin for flash hole size control.


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RJM Full Member Offline Posts: 212 Location: State of Confusion Joined: Oct 15^th, 2006	Re: swaging smaller flash holes Reply #3 - Apr 12^th, 2018 at 8:24pm	Print Post
	kkid66 wrote on Apr 12^th, 2018 at 6:52pm: Fred Cornell made the one I have. It uses a .059 +/- Lyman decapping pin to swage the flash hole around. For best results use brass that has not been chamfered on the inside. Use a little lube on the pin and bump swage it to size. I use a dorman p19C freeze plug with a hole drilled to push brass back off the pin. For best results I used a .069 reamer to make all my flash holes exactly the same size (think Lapua). I also have a Hoke pocket reforming die by Kermitool that will swage a rifle primer case to pistol primer case depth and uses a gage pin for flash hole size control. Does your Cornell tool use a reloading press, or is it a punch with a pin on it, that is hit with a hammer? A picture might help. Thanks, Ron


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kkid66 Full Member Offline Posts: 186 Location: central tx Joined: Jun 4^th, 2014	Re: swaging smaller flash holes Reply #4 - Apr 13^th, 2018 at 10:04am	Print Post
	Yes it is press mounted and Buffalo arms did have them at one time. Dont know if Fred is retired or still making them. I will try to get my grand daughter to post a picture next time she is home- I am not that computer savy. Mine came with inside bushing adapters for 38-55 and .40s none needed for 45


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40_Rod Frequent Elocutionist Offline Extremism in the persuit of accuracy is not a vice Posts: 4285 Location: Knoxville, TN Joined: Apr 20^th, 2004	Re: swaging smaller flash holes Reply #5 - Apr 14^th, 2018 at 10:28am	Print Post
	You can play with them if you want. I experimented with them a number of years ago when people started talking about small flash holes. So I got some 32-40 made up 10 with small flash holes and ten with a .060” flash hole. I fired them extensively side by side over an entire summer. In the end I could see no appreciable difference in group size. Since then everything I have uses a .060” flash hole that has been uniformed with a Sinclair tool. 40 Rod


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