Favorite 7mm08 deer load.
- Thread starter wvbuckbuster
- Start date
walkinhorseman
Beginner
- Sep 28, 2010
- 139
- 86
desertcj":23nulco7 said:
CJ , sorry about taking so long to get back to this thread. I wanted to take the time to diligently research my response and make the post from my computer keyboard to avoid typos from a touch screen..
Yes, I am referring to RL-16, not 26. My mistake.
So, here are some points that I would like to make about your claim of velocity achieved with RL-16 and a 140 grain bullet.
First, I took three brands of 7-08 brass , Lapua, Remington and Nosler, and filled them to overflow out of the top of the neck using a long drop tube funnel. The most that I could get in the case (fired) at overflow is 52.5 gr in the Nosler and 51.4 in the other two. I had tried 47.5 gr in my tests but that was well into the neck and the compression was excessive. According to Quickload, your 50 grain load is 121% fill ratio and yields 86,682 psi where the MAP for the 7-08 is 60,191 psi. .and. that’s for the 140 E-tip. It’s not very likely that you got 50 grains of powder in a 7-08 SAMMI case.
Alliants’ data for the 140 Partition states 47.2 gr of RL-16 yields 2952 fps out of a 24” barrel. Running Alliants’ data on Quickload, gives 108%/ 59,534 psi/ 2983 fps. Considering the variables that are specific to the Alliant test platform such as the powder lot and chamber characteristics, I think the Quickload prediction has good fidelity. The Alliant data at 47.2 comes in just under SAMMI MAP for the 7-08.
In my H-S chamber and 22” barrel, I backed off from the 47.5 grains because of pressure indications. I use a blade micrometer on the first firing of new brass to mic the case head for expansion. My 46.0 grains yields ~0’0004-0.0005” expansion, whereas the 47.5 gr load was closer to a full 0.001”. That 0.001” is considered maximum pressure expansion for the case head at full pressure.
Out of all of the 7-08’s that I have had, 2800 fps with the 140 grain bullets seemed to be prudently achievable. The Sako AII was sub-MOA at 2825 fps and that made me happy. However, it took 48 grains of 760 and a 9-1/2M to get there. I used an Oehler 35P for my velocity measurements until recently and have stepped up to the Labradar. My Nosler 48, 24” barrel” was sub-MOA with IMR-4350 and just over 2800 fps.
Looking into the Nosler manual, they are listing velocities of 2922 fps and 2953 fps with RL19 and Big Game respectively. But that is also out of a 26” barrel. IMR-4350 has been such a versatile and strong performer for me in a number of calibers that I bought it in 8 # cans. The same Nosler Manual data shows a case full of IMR-4350 gives the best accuracy for that powder whereas RL-19 and Big Game gave the best accuracy at lower than maximum velocities. Being the old Curmudgeon that I am and resistant to change, I think I’ll stick with my tried and true 760 and IMR-4350 in the 7-08. I do have an 8# jug of H4350 that I will probably test in the H-S to see how that does. My venture into RL-16 was because I had it and it is billed as being temperature tolerant.
wvbuckbuster, earlier in this thread I stated that I don’t like posting my loads because no two rifles will demonstrate the same max chamber pressure for any given bullet powder combination. You seem savvy enough to read between the lines here and take a sensible approach to your loading. In this post I have presented data from traceable sources that pretty much conclude that in a standard 7-08 case with a 140 grain bullet seated at a 2.80” magazine length, 47.2 grains of RL-16 is pretty much the common sense limit. Maybe if you had an Ackley Improved chamber in a long action and a chamber throated to seat the bullets no deeper than the base of the neck, you could use 50 grains of RL-16. Nosler data says that you are probably on the right track with your Big Game testing.
I can assure you that I did in fact put up to 51.5gr of RL16 in a Winchester 7mm-08 case with a 140gr E-tip. In fact, I took a picture while loading them. I would have tried 52gr, but I don't think it would fit. Like I said, 50gr was the most accurate load and it was 2863fps avg. I started with charges that were lower and worked up. Different lots maybe? Just stating my data, your mileage may vary...
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pharmseller
Handloader
- Feb 13, 2012
- 550
- 79
Those bullets sure look long. What’s the COAL?
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- Thread starter
- #45
wvbuckbuster
Handloader
- Nov 5, 2015
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I want to thank everyone that shared their loads. I hope I haven't caused feathers to be ruffled . Desertcj I thank you for your confidence in me and I assure you I take great pains to carefully make safe loads. As for me I load and shoot what is the most accurate and doesn't have to be the fastest as long as it is safe. Sure I like for loads to be close to the max listed but not worried if it isn't. Thanks again everyone, Dan.
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- #46
wvbuckbuster
Handloader
- Nov 5, 2015
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I meant to say walkinghorseman. I understand not wanting to post an actual load but it comes with understanding that it is safe in your gun and needs to be worked up to. Thanks, Dan.wvbuckbuster":1tl6a3wf said:
pharmseller
Handloader
- Feb 13, 2012
- 550
- 79
Looks crunchy.
Most accurate and deadliest on whitetail for me was a max charge of W760 CCI 250 and a Speer 145 gr BTSP. This was out of a Rem 700 CDL 24” barrel. I shot probably a dozen or so deer with that load and they all dropped on the spot or within fifteen feet. Nothing too far, maybe 200 yards. Must be one of those perfect impact speed for the bullet situations. That bullet works well in my 280 on deer.
Don't own a 7-08 but load for one. 139 Hornady SST's, 41.6 gr's of Varget, CCI 200 primers, and I believe that was with Winchester brass. That load shot pretty consistently in the 5's at 100 yds and always seemed to be under 3/4" in a standard 22" barreled M700. The last test I did with it I have it marked at .573 from a cold bore. Accounted for several deer this past yr. Loaded at a magazine length of 2.800, in that gun that was .080 off the lands.
walkinhorseman
Beginner
- Sep 28, 2010
- 139
- 86
Dan, no reason for you to apologize. It was I and -cj that flamed your post. This forum has a cadre of members that have credible field experience and can be trusted for their honesty. I salute those members. With that being said, I apologize to you and will reserve further comment.wvbuckbuster":3ch7fdkw said:
Barnes 120 tsx 44gr varget @2.800 win brass with whatever large rifle primer no difference in accuracy it has been shoot by at least half a dozen rifles and is consistently m.o.a my wife’s model 7 stainless shoots 3/4 in groups with it and has killed ever whitetail she has pulled the trigger on including this 173in Georgia giant
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- #55
wvbuckbuster
Handloader
- Nov 5, 2015
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Stump.270 that is a really nice buck your wife got. I have tried some of the loads that was shared. Big Game has worked the best so far with Nosler 140 AB Varget with Nosler 120. IMR4350 is showing promise with the Nosler 140 BT. Haven't tried anything else lately. At some point I hope to try those Barnes. Thanks, Dan.
DrMike
Ballistician
- Nov 8, 2006
- 36,902
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Stump.270, welcome aboard. That is a trophy whitetail wherever one might wish to hunt. Your wife has every reason to smile with that fine trophy to her credit. Thanks for posting.
Deer Hunter
Beginner
- Jan 21, 2020
- 2
- 0
My Tikka t3x is liking the 140gr NBT over 40.5gr of RL15... Just shot a .3” group at 100 yards...
Dougfir
Beginner
- Mar 2, 2018
- 74
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Mine is currently shooting 140 e-tips.
Federal case, H 4895 to right around 2700fps. WLR, I think it's 2.775"
It shoots right around 1" from my M-70 featherweight. I've cooked up more accurate loads using accubonds and ballistic tips, but am feeling pretty good about shooting lead-free these days.
Federal case, H 4895 to right around 2700fps. WLR, I think it's 2.775"
It shoots right around 1" from my M-70 featherweight. I've cooked up more accurate loads using accubonds and ballistic tips, but am feeling pretty good about shooting lead-free these days.
Brinky72":3r3nogxj said:
Brinky, You're not the first person I've heard with good reports on that bullet. I'm curious what speeds you're running. You stated a maximum charge of 760, but is that using Hodgdon, or Speer data? Hodgdon lists 46 gr maximum at 2788. Speer's data is significantly different showing 49 gr's at 2920.
Brinky72":1bictqg5 said:
The Speer 145gr BTSP is what I use in the 7mm-08 and 280 as well but different powder I use H 4350 The 7mm-08 has taken a fair number of deer both whitetail and mulie along with a few elk with that load. Tried many of the other bullets mentioned but have gone back to the speer.
