7mm rem mag & 160gr accu's

super-7

Handloader
Jun 27, 2009
838
2
I've worked up 2 loads for this and I'm .5 grain below max for each load and no where near what I expect for Mv's. Loads are 62.5gr Rl-22, cci 250 pr 160 gr nos accu's (2880)fps 2-5shot avg Imr 7828ssc 63.5gr cci 250 pr 160's (2835)fps 2-5shot avg Both sd's 12 and 15 . I want to be at 2950-3000fps. Any advice welcome.
 
Hey dont feel to bad, am in the same boat as you.

I use 61g RL-22 out of my 24" 7 mag and only get 2850-2900fps as well, but 1/2 MOA.

A lot of people use 64-65g and that puts you at 3000fps. I have went up to 65g, but groups are 1"-1.5".

My rifle just doesn't shoot when pushed that hard with Rl-22 and the 160g AB. Slow it down a bit and it shoots 1/2 MOA.

If you want some velocity, buy some RL-25 or Retumbo.

I experiemented just a bit with Retumbo, went up to 71g and 3100fps with 1" groups. Warm load, start around 67-68g.
 
Ya groups were very good no complaints even the starting loads grouped decent, I think the accu's will pretty much group moa in my rifle at every MV so far, if I do my part. Ive got to get the trigger pull adjusted, it is pmo!! I just feel MV's should be up closer to 3000.
 
That 160 AccuBond has a very high BC, it's listed @ .531 in the range you're using it, but there are guys running that bullet a bit faster than normal and seeing a decent increase in BC at higher velocities.

JT.
 
If i remember right i used 63gr IMR4350 with my 160acc/b and i was getting 2940ish.
 
That's why I got rid of my 7mm Rem Mag, I can get the better velocity with a two inch shorter barrel with my 30-06 than I could with the 7mm


Corey
 
C. Smith- Better velocity with an 06 and a 150 grain bullet? I could see that, but with sacrificing a lot of BC and a lighter for caliber bullet.

With 62.5 RL-22 in the 7 RM, I get 2900 fps even with 160 AccuBond and a Fed215M primer. I doubt the primer makes that much difference, but it a little hotter than CCI and might get you a few more fps. With a 140 grainer, I average 3111 fps with 63.5 grains IMR4350 and same primer.

In comparing a 30-06 to a 7 Rem Mag, I say if you have one, there is no need to trade it for the other but if you're like me its fun to have both, but not necessary. Also, I would sacrifice a little velocity in 30-06 and shoot the "compromise" bullet in 165 grain.
 
Yotesmoker, I can get 3000 fps with a 165 grain out of my 30-06. I could not even touch 2900 with the 7mmrm. I have been very happy with my 30-06 vs the 7mm rm, even though I have no killed anything with it yet. But I feel that is comig this year.

Corey
 
I have an old 7 Mag with a larger chamber than the newer rifles, but I can get 2960 with a 175 gr bullet with great accuracy. 68 gr IMR7828 and the 175 Hornady Interlock. This most likely is over pressure in your rifle so work up from way below. I chrono'd some factory loads from Remington made in the 60's or early 70's that went 3025 with 175 gr bullets! I tried my load several years ago in a browning A-Bolt and had to pound the bolt open, so don't use my load! I mentioned it just to let you know they have changed things a bit in this round from when it was introduced. I'm sure there are some combo's that will go over 2900 in the 175 in todays rifles with all these new slow powders.
 
If you want to get 3000 fps with 160 AccuBond you're just gonna need to push to that max. and see what you get. The pressure on the 7mm mag has been pushed back over the years and the max loads are kinda on the soft side, IMO. I get 3080fps with H-1000, some folks says the load is a bit hot, but it doesn't seem to be having any adverse effect on the cases. No excessive stretch, bulges, or primer pocket enlargement. You just need to find a powder that will zip that bullet out there at the velocity you want and still give good accuracy. My load shoots one hole groups and has done so with two different type cases. You might also try loading that bullet out a bit for the hotter loads. Mine shoots very well with the load just short enough to work in the magazine. It's off the lands more than 0.10. The OAL is 3.350. Look up my post in this topic.
http://noslerreloading.com/phpBB2/viewtopic.php?t=11288

Its always been my opinion that if you're not getting the velocity that is stated in the reloading tables, then you're probably not generating the pressure either. Just a simple thought that is probably not true in all situations but seems logical enough for most. Just work up carefully
 
I've got OAL as long as I can and still fit in the mag, I'd have to go single shot to get out any farther. ol man your the second guy to give me that load, and said to use with caution . On the hogdon web site they say that IMR 7828 ssc can be used with up to a 4% gain in capacity over 7828. Does this mean you add 4% on to your original load info for 7828. that would be 2 gr higher on a 50 gr load. A 63 gr load works out to 65.5 Is this right or am I reading some thing wrong?
 
Hi guys, I am loading 160gr. AB for my 2 hunting partners and I can tell you that both rifles are under .5 moa @ 100 yards.
I have not had them chrony yet but according to Nolser they just a few feet under 3000.
Both rifles a Remington CDL and Kreikle have 26" tubes.
The load is 60grs of IMR 4350.
This load has been deadly on Elk, Moose and Whitetail and at the end of the month we are heading for Mulies.

Blessings,
Dan
 
Worth noting that years ago a call to Sierra ended up with a recommendation to work up to 65 grains of Reloader 22 under their 160 grain SPBT Gameking bullet. That load has yielded over 3,000 fps for me in several different 7mm Rem mag rifles and has never given me a problem.

I've often used Nosler Partition bullets instead of the Sierra Gameking, with the same powder charge and excellent results. Never have messed with the 160 AccuBond, but likely will once I run low on 160 Partitions.

I'd say bump that RL-22 charge up a bit, towards Sierra's recommended load, and see if that works out better for you. After having tried a number of powder/bullet combos in the 7mm Rem mag, I just don't bother with much of anything else except for a stout charge of Reloader 22 and a bullet of around 160 grains at 3,000+ fps. It does whatever I need done with a 7mm, and does it well.

Regards, Guy
 
You should not have a problem hitting 3000 fps with the 160 gr AB in the 7mmRM, I get this velocity with the 160 gr AB in my 24" barreled 280 AI.

Just remember to work up slowly and watch for pressure signs.

JD338
 
I just ran my load of 66gr of RL22 under a 160gr AccuBond over the chrono a few weeks back and I am right at about 3080-3100 with that load. Load is safe in my WBY and shoots really well. Weird why Nosler and alot of others really underload the 7mm Rem. Speer loads up to 65gr of RL22 with the 160's pretty regularly. I loaded the HDY 175 with H870 up to about 2900 with no big issue. Scotty
 
Scotty - I'm with you - I don't understand why some of the hand loading manuals have cut the 7mm mag back to about .308 Win ballistics... Why load a "magnum" 160 to 2700 fps?

Beats me. I keep loading it up where it is a real performer, as it was always intended. As far as I'm concerned:

140's should do over 3200 fps, I've seen factory 140's at 3225 fps.
160's over 3000, maybe more
175's over 2900

All of those are easy, and can be accomplished safely in a production rifle.
 
Guy Miner":3v9dckbh said:
Scotty - I'm with you - I don't understand why some of the hand loading manuals have cut the 7mm mag back to about .308 Win ballistics... Why load a "magnum" 160 to 2700 fps?

Beats me. I keep loading it up where it is a real performer, as it was always intended. As far as I'm concerned:

140's should do over 3200 fps, I've seen factory 140's at 3225 fps.
160's over 3000, maybe more
175's over 2900

All of those are easy, and can be accomplished safely in a production rifle.

Guy,

I think you are spot on!
FWIW, my 280 AI has a 24' tight chambered barrel and I get 3240 fps with the 140 gr AB and 3019 fps with the 160 gr AB.
The 7mmRM has a bigger case so the velocities listed above should be a slam dunk.

JD338
 
Now thats what i was hoping to hear, I'll keep bumping up and checkin for pressure signs. thanks for the info.
 
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