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Joined: Jul 2001
Posts: 60,132 Likes: 9
Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,132 Likes: 9 |
The 20" barrel makes no significant difference as to which powders do well. Do you have any data that shows at what barrel length vs burn rate that is does matter? I really don't recall ever seeing any real test data but there has to be a point at which it does matter but it may be too small to even show significance a a reliable correlation. MM Take a look at pressure/velocity data for handguns chambered in rifle cartridges....
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: Mar 2006
Posts: 14,500
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2006
Posts: 14,500 |
I've been liking IMR4166 with 162s. The 162's would be nice to run, if you can get the velocity out of them. I'm assuming you are probably exceeding 2,600 fps? Hopefully somewhere around 2,700. That would be a hammer, even at that velocity. Right around 2650, which works pretty well.
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Joined: Dec 2023
Posts: 49
Campfire Greenhorn
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Campfire Greenhorn
Joined: Dec 2023
Posts: 49 |
I have a BLR 7mm08 that likes 140 sierra game kings over IMR 4895.
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Joined: Dec 2023
Posts: 98
Campfire Greenhorn
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Campfire Greenhorn
Joined: Dec 2023
Posts: 98 |
As alot of others said my rifle likes varget maybe not the fastest but shoots good.
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Joined: May 2009
Posts: 17,263
Campfire Ranger
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Campfire Ranger
Joined: May 2009
Posts: 17,263 |
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Joined: Jan 2005
Posts: 12,472
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2005
Posts: 12,472 |
I get 2740 fps out of a 24” barrel Rem Varmint Special, with a 150 Scenar over 42 grs of Varget COAL loaded to 2.80 mag constraints.
I just loaded some today about 25 thou off the lands to see if I can shrink the .5 to .75” groups that I have been getting. The rifle is in my range toy rotation so I don’t mind using it as a single shot if need be.
This rifle is the one with the heavy barrel and was a safe queen when I bought it. Lots of fun to shoot and a very classy retro look.
I may pillar bed it and free float the barrel one day but it shoots plenty good out to 550 yards. Have not tried it to 1000.
Faith and love of others knows no mileage nor bounds. That's simply the way it is.
dogzapper
After the game is over, the king and the pawn go into the same box.
Italian Proverb
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Joined: Aug 2010
Posts: 48,072 Likes: 5
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 48,072 Likes: 5 |
I've been liking IMR4166 with 162s. The 162's would be nice to run, if you can get the velocity out of them. I'm assuming you are probably exceeding 2,600 fps? Hopefully somewhere around 2,700. That would be a hammer, even at that velocity. Right around 2650, which works pretty well. Not bad. Probably similar to a 147gr 6.5 at that speed.. I may have to revisit that bullet in the 7mm-08.
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Jul 2011
Posts: 1,792
Campfire Regular
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Campfire Regular
Joined: Jul 2011
Posts: 1,792 |
In my Tikka RL17 gave the highest velocity with 140gr bullets, followed closely by W760, PP2000mr, Big Game, RL16 gives about 50 Fps less but is very accurate and very temperature stable. If you are going to load 160 grain bullets RL26 is the way to go, with Nosler Partitions I get 2770 FPS using Winchester cases and 215 primers.
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Joined: Dec 2001
Posts: 296
Campfire Member
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Campfire Member
Joined: Dec 2001
Posts: 296 |
Would not take my eyes off Rl23
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Joined: Nov 2018
Posts: 610
Campfire Regular
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Campfire Regular
Joined: Nov 2018
Posts: 610 |
.....Is there any data listed that shows preferred powder and speed for a 20 inch barrel? I am not aware of any 20" data. Hodgon has data on their website for a 7mm08 15" barrel in the pistol section. Sierra also has data for a 15" in their single shot pistol section. .....how has your preference gone? I think you will find a 20" barrel will perform well with powders that also perform well in 22-26" as well. Many powders work well in a 7mm08, such as: IMR-4895, IMR-4064, Varget, BigGame, IMR-4350, H4350, RL16, RL17 IMR-4064 or Varget is not a bad place to start with 100-150 pills. Don't over think this one, 7mm08 is not overly picky.
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Joined: May 2007
Posts: 580
Campfire Regular
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Campfire Regular
Joined: May 2007
Posts: 580 |
Hodgdon Varget and Winchester StaBALL 6.5 are my favorites. The velocity with StaBALL is impressive.
NRA member
Mill Creek Rifle Club member
DeSoto, KS
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Joined: Feb 2001
Posts: 7,964
Campfire Outfitter
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Campfire Outfitter
Joined: Feb 2001
Posts: 7,964 |
My other 3 7-08,s I had and loaded for RS BG with 140 gr my Remaining Forbes 7-08 with 140 gr H 4350
kk alaska
Alaska 7 months of winter then 5 months of tourists
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Joined: May 2008
Posts: 1,459
Campfire Regular
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Campfire Regular
Joined: May 2008
Posts: 1,459 |
The 2 most accurate powders I've found in my 7mm-08 so far is IMR4064 and big game. I would like to try some CFE223 some day to see how it does but for now I'm happy with the Big Game/120 TTSX load I'm shooting. "Back in the day", we didn't have either CFE 223 or Big Game, but I found IMR4064 as best in both accuracy and MV in my M70 Featherweight. Today, I carry both CFE 223 and Big Game, but not for a 7-08 but .35 Whelen and .375 H&H. I no longer have a 7-08, but IMR4064 was very useful for both the .35 Whelen and .375 H&H. Yet those two newer powders have improved the performance in both .35 Whelen and .375 H&H, so why not also in the excellent 7-08? Bob www.bigbores.ca
Last edited by CZ550; 02/01/24.
"What shall it profit a man if he gain the whole world and lose his own soul" - Jesus
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Joined: May 2008
Posts: 981
Campfire Regular
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Campfire Regular
Joined: May 2008
Posts: 981 |
R17 in my M7. Mid to low 2700's with 154 gr sp. That bullet goes under moa with several different powders. Hunter and H4895 do very well with it also but not as fast.
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Joined: Dec 2012
Posts: 1,981
Campfire Regular
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Campfire Regular
Joined: Dec 2012
Posts: 1,981 |
About 25 years ago I bought some of the Hornandy I think it was called light magnum 139 gr ammo for my wife's Rem 700 7mm-08 24" barrel because they claimed 3000fps . I shot it over my chrono and sure enough it was 2999, so I pulled a round apart because I couldn't get enough in the case to get even close to that FPS. Horny used a ball powder so I bought some Win 760 and I got 2970 with a 140NP and shot .5 m.o.a.
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