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6.5 build

 
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  #29  
Old 07-24-2012, 06:46 PM
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Re: 6.5 build

Quote:
Originally Posted by vegas steve View Post
actually cases that use faster burning powders will wear out barrels sooner than slower powder cartridges.



Large overbore calibers that use slower powders like the 264 win mag and 257 Weatherby with slow powders like 870 are the reason they are barrel burners

Larger underbore calibers that use faster powders like the 375's and 458's that use faster powders like RL15 or 4320 are known to last a long long time
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  #30  
Old 07-24-2012, 09:52 PM
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Re: 6.5 build

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Originally Posted by woods View Post
The Douglas is a 1 in 8 and the Shilen is a 1 in 9

I couldn't detect any difference but didn't do a lot of load development with 140 gr bullets in the 1 in 9 where a problem might have developed with a low velocity load
I'm getting ready to order a barrel for a 6.5 Remington mag build on a savage long action. Was the shilen barrel a select match grade or match grade barrel, how many grooves? The Douglas?
I hope to get results like yours, thanks for the info.
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Thanks Doug.

5 Acres on the east side of the Coburg hills in Oregon.

I have Two Dogs, but my 10mm is for protection
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  #31  
Old 07-24-2012, 11:24 PM
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Re: 6.5 build

I was not into number of grooves back then so I did not specify on either the Douglas or the Shilen

So the Douglas was just ordered as a 1 in 8 twist #4 contour (.650" muzzle) Premium Air Gauged Tolerance and has 6 grooves. Finished at 26" but still seems trim and slim

The Shilen was ordered the same in Select Match Grade 1 in 9 twist #4 contour (.650" muzzle) and probably had 6 grooves although I can't check it right now since I did sell it to a friend. Before I sold it I was contemplating cutting the barrel down to 24"

Anyway the Douglas seems decidedly slimmer than the Shilen and the websites list the weight of the Douglas as 6 oz less weight

I started to think and pay attention to number of grooves on my last build which was a Pac-Nor 3 groove in 375 Ruger. I really like the Pac-Nor 3 groove since it is very fast and cleans up better than any of the other aftermarket barrels I have. But it may be because the large bore size facilitates the benefits of the 3 groove and a .264" might be a little tight for a 3 groove.
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  #32  
Old 07-25-2012, 07:31 AM
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Re: 6.5 build

Quote:
Originally Posted by woods View Post


Large overbore calibers that use slower powders like the 264 win mag and 257 Weatherby with slow powders like 870 are the reason they are barrel burners

Larger underbore calibers that use faster powders like the 375's and 458's that use faster powders like RL15 or 4320 are known to last a long long time
i have found this to be incorrect,the slower burning powders burn cooler and distribute the burn across a longer area of the bore,thus creating a more even wear and extending barrel life compared to the hotter burning faster powders. the chart that is illustrated here is obsolete information.
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  #33  
Old 08-28-2012, 05:29 PM
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Join Date: Jan 2012
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Re: 6.5 build

Quote:
Originally Posted by woods View Post
I was not into number of grooves back then so I did not specify on either the Douglas or the Shilen

So the Douglas was just ordered as a 1 in 8 twist #4 contour (.650" muzzle) Premium Air Gauged Tolerance and has 6 grooves. Finished at 26" but still seems trim and slim

The Shilen was ordered the same in Select Match Grade 1 in 9 twist #4 contour (.650" muzzle) and probably had 6 grooves although I can't check it right now since I did sell it to a friend. Before I sold it I was contemplating cutting the barrel down to 24"

Anyway the Douglas seems decidedly slimmer than the Shilen and the websites list the weight of the Douglas as 6 oz less weight

I started to think and pay attention to number of grooves on my last build which was a Pac-Nor 3 groove in 375 Ruger. I really like the Pac-Nor 3 groove since it is very fast and cleans up better than any of the other aftermarket barrels I have. But it may be because the large bore size facilitates the benefits of the 3 groove and a .264" might be a little tight for a 3 groove.
Woods, or anyone else, I'm still getting ready to order my 6.5 Rem Mag barrel and am trying to determine how far or deep to set the throat. I would like to shoot both 130 and 140 gr bullets. I have 100 berger 140gr hunting VLD's but I am not limiting myself to one bullet I would like some lee way in seating depth for different bullets, but want to seat the long bullets out far enough as to not inpinge on case capacity. Woods I was wondering what reamer you used and if you know the length of your throat? also what bullets would you recomend as I will probably need to load some dummy rounds to send to pacific tool to have my reamer made.
I am new to long range shooting and will mostly be ringing steel at long range, but would still like to shoot hunting bullets at long range if I feel I am proficent enough with my shooting.
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Thanks Doug.

5 Acres on the east side of the Coburg hills in Oregon.

I have Two Dogs, but my 10mm is for protection
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  #34  
Old 08-28-2012, 05:35 PM
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Join Date: Jan 2012
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Posts: 48
Re: 6.5 build

Oh, the 6.5 REm Mag build I am doing is on a Savage 111 long action so I have all the room I need to seat the long bullets way out there and still fit in the magazine
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Thanks Doug.

5 Acres on the east side of the Coburg hills in Oregon.

I have Two Dogs, but my 10mm is for protection
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  #35  
Old 08-28-2012, 08:35 PM
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Re: 6.5 build

Hey 2dogs, I just seated a 130 gr Accubond at the length I wanted to stick it out of the case (3.100") and told the smith to set the beginning of the lands where it would have .025" jump. I'm no smith, but I believe they can set the leade and lands where they want with a piloted neck reamer. Is there a reason you are purchasing your own reamer?

The smith had the reamer. I don't know if he owned it, borrowed it or rented it.

Bullets are tricky and will take some tinkering with a comparator. Long time ago I discovered that in the 270, the 130 gr TSX was longer from the point where the comparator hit to the tip of the bullet than the 140 gr TSX was. IOW sometimes the lighter bullets are "pointier" than the heavier ones. That being said, I would just seat a 140 gr VLD (if I was considering loading them at all) where the base of the bullet was even with the neck/shoulder junction and tell the smith (or the reamer manufacturer) to set the lands .025" off that.

Personally I love the 130 gr Scirrocco and a friend of mine also loves them

Three 6.5mm bullets, head to head for elk/deer - 24hourcampfire

but am thinking of trying the 120 gr TTSX

(I like pass thru's)
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