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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New 6.5 Idea
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<blockquote data-quote="7mmRHB" data-source="post: 755050" data-attributes="member: 3584"><p>Since I'm the guy that dreamed this cartridge up, I guess a little more info about the cartridge and why I think this will be a great little round. First of all I have done this before with an RUM case to make a very potent 7mm. The case was shortened from 2.850 to 2.555 with less taper and a 35* shoulder and a bit longer neck so that a 200 gr Wildcat bullet could be seated where I wanted it yet not need a Wyatts box to be a repeater. It worked very well with performance a bit better than the parent 7mm RUM case performs in a factory Remington, using 10 to 12 grs less powder.</p><p></p><p>That was 12 years ago and has proven to be a very accurate and efficient cartridge so I decided I would give it another shot with the 6.5- 284 case. I shortened the case to 1.970 with .320 neck length with enough taper removed so it could not be accidentally loaded into a 6.5 - 284. I kept the 35* shoulder because 35* shoulders work very well. The case holds 54 gr to the base of the neck compared to 50 gr in a 260 Rem. case, 47 gr in a Creedmore case and 44gr in a 6.5 x 47 case. The 6.5 284 case is about a 62 or 63 gr case. All these capacities are water to the neck shoulder junction which is the best comparison of these rounds. I believe the reason that this round will perform as well as the 284 case is because it gets you to a better burn rate in powders (H 4350?) that will fill the case closer to 100% I hope I'm right.</p><p></p><p>Steve and I worked together to design the step down dies and Steve did the machine work on the dies and rifle and is painting it as I'm writing this. ( Steve has a bunch of sweet shooting guns to his credit by the way.) </p><p></p><p>The brass is super hard to make so this isn't for the faint of heart to try to do this. We're going to do three guns total since I have made 500 pcs of brass and will not be doing any more if I can help it. </p><p></p><p>These are fun projects and hopefully this 6.5 will work well !! We will try to get more pictures up soon. -------- 7mm RHB</p></blockquote><p></p>
[QUOTE="7mmRHB, post: 755050, member: 3584"] Since I'm the guy that dreamed this cartridge up, I guess a little more info about the cartridge and why I think this will be a great little round. First of all I have done this before with an RUM case to make a very potent 7mm. The case was shortened from 2.850 to 2.555 with less taper and a 35* shoulder and a bit longer neck so that a 200 gr Wildcat bullet could be seated where I wanted it yet not need a Wyatts box to be a repeater. It worked very well with performance a bit better than the parent 7mm RUM case performs in a factory Remington, using 10 to 12 grs less powder. That was 12 years ago and has proven to be a very accurate and efficient cartridge so I decided I would give it another shot with the 6.5- 284 case. I shortened the case to 1.970 with .320 neck length with enough taper removed so it could not be accidentally loaded into a 6.5 - 284. I kept the 35* shoulder because 35* shoulders work very well. The case holds 54 gr to the base of the neck compared to 50 gr in a 260 Rem. case, 47 gr in a Creedmore case and 44gr in a 6.5 x 47 case. The 6.5 284 case is about a 62 or 63 gr case. All these capacities are water to the neck shoulder junction which is the best comparison of these rounds. I believe the reason that this round will perform as well as the 284 case is because it gets you to a better burn rate in powders (H 4350?) that will fill the case closer to 100% I hope I'm right. Steve and I worked together to design the step down dies and Steve did the machine work on the dies and rifle and is painting it as I'm writing this. ( Steve has a bunch of sweet shooting guns to his credit by the way.) The brass is super hard to make so this isn't for the faint of heart to try to do this. We're going to do three guns total since I have made 500 pcs of brass and will not be doing any more if I can help it. These are fun projects and hopefully this 6.5 will work well !! We will try to get more pictures up soon. -------- 7mm RHB [/QUOTE]
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