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Posted: 10/17/2015 11:42:56 PM EDT
I was looking at another thread on the .17 hmr and it got me wondering. What would a necked down to .17 .223 be like? Kaboom? Or would it shoot? How fast would it be? Could it be stabilized? What twist would it have to be, to stabilize it? Why? Murica, hell yes!
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I was looking at another thread on the .17 hmr and it got me wondering. What would a necked down to .17 .223 be like? Kaboom? Or would it shoot? How fast would it be? Could it be stabilized? What twist would it have to be, to stabilize it? Why? Murica, hell yes! There is a .17 Tactical cartridge, the .17 Practical cartridge and the .17 predator cartridge all based on reformed .223 brass. I think Redding makes the dies for the .17 Tactical. Basically the .17 Remington would be a commercial round in that area with barrels and dies easily available. I have a .17 Fireball in an AR that work s just fine although it does come up a little short in the AR mags but seems to work just fine for me. I was trying to cut back on the use of powder so the smaller volume helped some. I don't know if the necks need to be turned on the other .17 cases but my Fireball seems to work just fine with reformed .223 brass and trimming to size. To stabilize the normal twist is 1:9 and I hope you were thinking about using the .17 round in a locked breach AR. The velocities on the .17 center fire cartridges listed are way up there! If you were actually looking for a small cartridge close to the size of the 17HMR or the newer 17WSM there is a round called the .17VHA originally based on the 5.7X28 FN cartridge and is small. I prefer to use the 4.6X30 brass because it seems to be a bit stronger. Problem is getting a rifle made since it would be all custom work. |
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Quoted:
I was looking at another thread on the .17 hmr and it got me wondering. What would a necked down to .17 .223 be like? Kaboom? Or would it shoot? How fast would it be? Could it be stabilized? What twist would it have to be, to stabilize it? Why? Murica, hell yes! Basically, that would be .17 Remington, that been around since 1971. A 30 grain bullet gets to about 3850 fps, a 20 grain bullet about 4,400fp The usual twist is 1-9 |
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The 17-223(AKA 17 PRACTICAL) is so common that RCBS and Hornady make OTC dies for it. The Practical is made just running a 223 case in the die and it is a straight neck down. I prefer to do a smaller step down on new brass by sizing it down with a gutted 223 die. The 17 TATICAL bumps the shoulder back about 0.025 with a neck down. Dies are available from Redding. My pick was the Practical for it's ease of forming. I have one of them and a 17 Remington. Same performnce but bras is hard to get, almost impossible to get real Remington, for the 17 R vs all over for the 17-223.
II also shoot 20 caliber versions in the 20 Tac, 20 PRAC and 204 Ruger. same cases just bigger necks. Also ballistic triplets.. Black Hole made my barrels in the 17 PRAC, 17 Remington, 20 PRAC and 204 Ruger. The Tacticals are not as common. No neck turning has been needed in any of the listed cartidges and all mine are on AR15's. My 17's are Greg |
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