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6.5 build

 
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  #8  
Old 06-19-2012, 03:21 PM
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Join Date: May 2012
Location: Mill Creek, WA
Posts: 25
Re: 6.5 build

I have used that calculator quite a few times and its the reason I went with the 8 twist for the vlds. I may end up getting another barrel in 8.5 so that I can still stabilize most bullets and maybe the vlds won't fly apart. I would like to stick with 140s too because of the higher bc and I will be shooting animals larger than deer with this gun and the extra power would be nice.

I like the thought of a 6.5/257 wby because it is a little different than what everyone else has. What held me back from it was mainly the reloading of it and the cost of brass vs the 264 wm. I can't get away from the extra cost for brass, but you say its easy to load and doesn't require expensive dies. It got me thinking of what dies to use. I could get customs but they are more expensive so I was wondering if you were talking about using something along the lines of a 257 wby neck sizing bushing die with the right size bushing for the .264 bullet. Then using the 257 body die if things start to get tight. For seating would a 270 wby die work since I believe the 257 and 270 use the same case.

Thanks for the help.

Tyler
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  #9  
Old 06-19-2012, 08:08 PM
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Join Date: Jun 2006
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Re: 6.5 build

Quote:
Originally Posted by tyfo View Post
Woods,

Thank you for the info on the 6.5 rem. It was kind of on my radar before but two things held me back. I didn't think they were pushing 140s over 3100 and I figured if I was going to reload for a comercially chambered belted cartridge then why not just go with the 264 win mag. I'm still learning about how different powders can effect barrel life so how much longer life would we be talking about?

This chart is a general guideline on barrel wear



the stigma on the 264 win mag and other overbore cartridges is that they take the slooooowest powders possible. I have always read that the old 264 win mag shooters loaded up with 870 so in a 264 that reads 500 shots

the 6.5 rem mag has been called the original short magnum and powders in the 4350 to 4831 range (I shoot RL17 which is comparable to IMR4350 burn rate) so the barrel life should be in the range of 2000

Of course how you shoot and reload also has some bearing on your barrel life. Letting your barrel cool down and not get super hot is a big factor. This would apply to both the burners of slow powders or faster powders.

YMMV
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  #10  
Old 06-19-2012, 10:14 PM
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Join Date: Jan 2011
Posts: 2,138
Re: 6.5 build

Well you will pay just as much for quality (nosler custom) 264wm brass as you will 257wby brass from norma.
Low budget reloading setup, RCBS 2 die 270 wby, hornady universal 26cal neck sizer, all less than 60 bucks, remove the expander assembly from the fl length die to bump the shoulder, put a 26cal vld seater plug in the seater die, and the hornady neck die will give you the .292" neck on a loaded round that you need.
Option 2, 2 die RCBS used same as above, redding type s bushing neck die for 270wby with .291-.293" bushings, about 150 bucks, but more consistent.
If your smith has to order a reamer I would tell him .175" freebore, 3/4 of a degree leade angle for 60 mins, dave kiff at ptg is very familiar with this type of throat, will have the ability to launch 140 bergers over 3400fps but they will come apart at that speed in a 8 twist. Even at 3300fps at 1400ft alt the 140 has a 1.5xx stability factor in a 9 twist with 50% humidity.
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  #11  
Old 06-20-2012, 10:08 AM
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Join Date: Oct 2010
Location: Watertown, SD
Posts: 322
Re: 6.5 build

I maybe a little bias but this is what I would build if it was my parts

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  #12  
Old 06-20-2012, 10:25 AM
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Join Date: Oct 2008
Posts: 98
Re: 6.5 build

Quote:
Originally Posted by backwoods83 View Post
Well you will pay just as much for quality (nosler custom) 264wm brass as you will 257wby brass from norma.
Low budget reloading setup, RCBS 2 die 270 wby, hornady universal 26cal neck sizer, all less than 60 bucks, remove the expander assembly from the fl length die to bump the shoulder, put a 26cal vld seater plug in the seater die, and the hornady neck die will give you the .292" neck on a loaded round that you need.
Option 2, 2 die RCBS used same as above, redding type s bushing neck die for 270wby with .291-.293" bushings, about 150 bucks, but more consistent.
If your smith has to order a reamer I would tell him .175" freebore, 3/4 of a degree leade angle for 60 mins, dave kiff at ptg is very familiar with this type of throat, will have the ability to launch 140 bergers over 3400fps but they will come apart at that speed in a 8 twist. Even at 3300fps at 1400ft alt the 140 has a 1.5xx stability factor in a 9 twist with 50% humidity.
Sounds like a lot of rigmarole to get 264 Win performance if you ask me. What does this mean "3/4 of a degree leade angle for 60 mins"? Most reamers used for VLD's are using a 1 degree 30 min leade which is actually 1.5 degree leade.
To the OP if it were me I'd just build a 264 Win Mag. cheap easily available brass, no mix matching die components, availability of factory ammo if you don't handload and damn they just shoot good (I own 3). But then thats just me, I guess some people just like rigmarole.
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  #13  
Old 06-20-2012, 03:21 PM
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Join Date: May 2012
Location: Mill Creek, WA
Posts: 25
Re: 6.5 build

So after the advice from quite a few people I ordered another barrel. It's a krieger rem varmint 8.5 31". Not sure if the 8.5 will help, but I don't see how it could hurt. Thank you very much for the powder burning chart. It was nice to see some numbers instead of just hearing that this powder will be harder on barrels than this one.

Thank you for the info about the 6.5/257 wby it was helpful. All the info about the reamer was a little over my head, but then again I'm just a lineman not a gun smith. I believe in time I will get there, but not quite yet.

What kind of performance do oh get out of the 6.5 sin? I had a hard time navigating your website from my phone. From what I read it seems like loading for it is more than I'm used to, but not too much for me to try on an interesting new cartridge.

The decision is still up in the air, but if there was a perfect cartridge everyone would use it. Thanks.

Tyler
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  #14  
Old 06-20-2012, 03:25 PM
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Join Date: Jan 2011
Posts: 2,138
Re: 6.5 build

If your not familiar with a 3/4 degree 60min leade maybe you should ask Shawn Carlock, Kirby Allen, Dave Kiff, or David Tubb what it does. If I weren't for a couple companies deciding to chamber the 264wm again for a while it would be long forgetten except in custom rifles like it just about was during the release of the 7mm rem mag in 62. It is a very inefficient case, using retumbo, H870, us 869, the way it works the only suitable powder availbe that's decent is retumbo so you may as well have a 6.5-06 or it AI cousin, and the cheap winchester brass available is just that, cheap. The 6.5x257 with H1000 will out run the 264wm with retumbo. Sinarms 6.5 is a great design for velocity and probably very accurate but that's a lot of powder from a hole that small.
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