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View Poll Results: Favorite 6.5 Cartridge
264 Win Mag 70 11.74%
264 Rem Mag 4 0.67%
65. STW 4 0.67%
6.5-284 131 21.98%
6.5 WSM 25 4.19%
6.5 SAUM 20 3.36%
6.5 Rem 59 9.90%
6.5-47 Lapaua 50 8.39%
6.5-06 45 7.55%
Other 188 31.54%
Voters: 596. You may not vote on this poll

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Favorite 6.5 Cartridge

 
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  #113  
Old 01-23-2013, 01:09 PM
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Join Date: Nov 2007
Location: Near Mt Rainier
Posts: 230
Re: Favorite 6.5 Cartridge

I forgot to mention, MagPro, produced velocities faster than anything I tried with 140gr B-tips and ABs in the 270 WSM. I expected it to do amazing things in the 6.5 WSM at least with 120 B-tips or 123 Scenars or something. It produced velocities well behind even the single base IMR 7828. Nearly every powder was faster.

The one canidate powder I have not tested is Hodgdon H-1000 in the 6.5 WSM or 6.5-284. I bought 8 pounds of the stuff when it was first released, loaded it in the .264 Winchester Magnum and gave most of it away. It was not as productive as Reloader 25 with 120-140 gr bullets. Bruce Hodgdon was still alive then. He said that H-1000 was introduced to power 160 gr hunting bullets in the 7mm Remington Magnum. The Hodgdon maximum load was 72 gr of H-1000 behind 160 gr Partitions in the 7 Mag was too hot for 4 shooters I associated with and led to the conversation. I settled on 68gr for 3080 fps from a 24 inch barrel.

I intend to try Norma MRP and MRP2 when Hodgdon finally takes over distribution. Quickload shows these two powders might be productive. I suspect that they are just Reloader 22 and Reloader 25 with different labels.

Are there any powders that you would recommend for large case 6.5 cartridges I have not tried?
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  #114  
Old 01-23-2013, 02:51 PM
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Re: Favorite 6.5 Cartridge

I don't have any 6.5 Rifles at the moment so couldn't recommend any powders. I figured RL17 would be a little fast for the 6.5 WSM, but thought it might do OK when using a bore riding CE bullet in a nitrides barrel. I think that will change the dynamics in favor of RL17. RL17 and Superpefromance will be my primary candidates and if they don't work I'll try Retumbo. I think one of those 3 should work well.
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  #115  
Old 01-23-2013, 03:14 PM
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Join Date: Feb 2010
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Re: Favorite 6.5 Cartridge

To mirror previous posts, I have to give my vote to N-570, thats what I run in my 6.5WSM (with the F210M). With the CEB sealtight band seated at/near the case mouth, I am able to achieve max pressure right around 100% case capacity. As 6.5 said, the kernels are HUGH, but my stick really likes it.


LTLR has suggested RL-19 in that case. RL-19 performed admirably in my Lazz Patriot, so it might deserve a look.

t
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  #116  
Old 01-23-2013, 03:24 PM
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Location: Near Mt Rainier
Posts: 230
Re: Favorite 6.5 Cartridge

I have to confess I do not know what a "CE" bullet is. The original Winchester bullets for the .264 Winchester Magnum were 2 diameter. From the point to the channelure they were "bore riding" and bore diameter. From the Channelure to the heel they were a full .264 land diameter. The 140 gr bullets had long shanks and the bore riding nose of the bullet was supposed to reduce bore friction and help them achieve the 3200 fps listed velocity. In the 1960s we had to believe what the two ammunition manufacturers put in their catalogs. In actual fact, the soft jacket of the 140gr Winchester bullet tended to engrave into the lands deeply on one side and go down the barrel at a cant. These bullets were famous for their "yaw" in flight and were less accurate than the handloaded Sierras. I would be suspect of similar "bore riding" experiments.

My latest barrel, an 8 twist Krieger for 6.5 WSM was nitrocarburized by the Melonite process. It was my third nitrocarburized barrel and all of my future barrels will also treated. I have used Hexagonal Boron Nitride coating for all of my bullets for four years.

I still suspect that R-17 will be best with the .260 Remington or 6.5 Creedmore with 120 or 123 grain bullets. It builds pressure quickly in the 6.5-284. It was the first powder I tried when I first got my gain twist Bartlein barrel with 129 and 120 gr bullets but the pressure curve was too steep for me even with coated bullets.
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Favorite 6.5 Cartridge-6.5-wsm-1885-300-140-mk-1-8-13.jpg  
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  #117  
Old 01-23-2013, 03:36 PM
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Join Date: Nov 2007
Location: Near Mt Rainier
Posts: 230
Re: Favorite 6.5 Cartridge

The above was my last 300 yard group. I stopped after 4 shots because my spotter said he could only see two holes otherwise I would have shot all 5. 140gr Sierras at a pedestrian 3150 fps from a 28 inch number 3 fluted barrel. F215 igniting 66.5 gr of Retumbo. I shot 140 Berger Hybrids in the same session with N-570 but did not do as well. The 6.5 WSM 1885 Highwall weights under 10 lbs with a 8-32X Blackdiamond scope. It has detachable Talley mounts so I can switch to a lighter hunting scope and save a pound.
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  #118  
Old 01-23-2013, 03:39 PM
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Join Date: Feb 2010
Location: Gillette, WY
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Re: Favorite 6.5 Cartridge

Well, let me help a brother out!


Cutting Edge Bullets: AKA CEB's

Cutting Edge Bullets Welcome


130 CEBs in front of N-570 out of a 30" 6.5WSM- 5 @ 100yds:
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Favorite 6.5 Cartridge-6-5wsm-5-100.jpg  
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  #119  
Old 01-23-2013, 03:56 PM
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Posts: 2,423
Re: Favorite 6.5 Cartridge

Quote:
Originally Posted by MontanaRifleman View Post
I don't have any 6.5 Rifles at the moment so couldn't recommend any powders. I figured RL17 would be a little fast for the 6.5 WSM, but thought it might do OK when using a bore riding CE bullet in a nitrides barrel. I think that will change the dynamics in favor of RL17. RL17 and Superpefromance will be my primary candidates and if they don't work I'll try Retumbo. I think one of those 3 should work well.
I have tested a few powders, H4831sc, H1000, H4350, and Retumbo. In my 6.5x284's I found using Retumbo that I get high velocities, low ES, full case utilization, low relative pressures, and excellent accuracy.. I can't see why this wouldn't be worth a try with the larger capacity 6.5's because I have had similar experiences using Retumbo in my 338 Lapua. An added bonus is that it is very temperature stable as I have shot at temperatures ranging from 0F to 85F with no effect.
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