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#5883596 - 08/17/15 10:07 PM 7mm reloading
Team By-God Offline
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Registered: 12/14/09
Posts: 1501
Loc: odessa tx
We loaded some 7mm rem mag for a new gun. Really nice sako and the leupold with the custom turret.. we got a load that would group,finally. we started with h1000 and 168g accubondlr, we never got a load to group good enough. We went to retumbo and 160 accubond.. got a load to group respectable, but its only shooting at 2790 fps, not quite what i would like but im not all that familiar with bigger bullets from the 7mm, ive been using 140 g in mine.. we were getting mid 2900's with the 168 and h1000.. is that enough velocity for that bullet with big game and long range in mind? Mule deer , elk and oryx possible targets...

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#5883612 - 08/17/15 10:16 PM Re: 7mm reloading [Re: Team By-God]
Cleric Offline
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Registered: 03/11/12
Posts: 2759
How long of a barrel? I think you may need a bit faster powder to get more velocity...but I will defer to the reloading experts

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#5883770 - 08/18/15 05:07 AM Re: 7mm reloading [Re: Team By-God]
dawaba Offline
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Registered: 10/22/06
Posts: 4200
Loc: Big Eddy Road, Noonday
Originally Posted By: Team By-God
We loaded some 7mm rem mag for a new gun. Really nice sako and the leupold with the custom turret.. we got a load that would group,finally. we started with h1000 and 168g accubondlr, we never got a load to group good enough. We went to retumbo and 160 accubond.. got a load to group respectable, but its only shooting at 2790 fps, not quite what i would like but im not all that familiar with bigger bullets from the 7mm, ive been using 140 g in mine.. we were getting mid 2900's with the 168 and h1000.. is that enough velocity for that bullet with big game and long range in mind? Mule deer , elk and oryx possible targets...


I've shot mule deer, elk, and oryx with the 7mmRM, mostly with 160 NPTs, but also with 160 ABs, 175 NPTs, 140 NPTs and 140 TTSXs. You can throw in a moose, some caribou, stone sheep, mnt goat, and others....all with reloads in 4 different rifles.

IMO, the top all-around performer for your criteria will be IMR4831, which almost always gives top velocities with fine accuracy. Expect 3050 fps with the 160s and 3250 with the 140s. Re-22 is almost as good. H-1000, in my hands, burns too slowly, especially with the 140s; save this powder for 175 gr and heavier bullets.
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#5884231 - 08/18/15 11:22 AM Re: 7mm reloading [Re: Team By-God]
ChadTRG42 Online   happy
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Registered: 09/16/09
Posts: 10237
Loc: Lewisville, TX
2790 fps with a 160 grain out of a 7 Mag with Retumbo is basically a starting load on the slow side. It's running about 280 Rem speeds. You can easily get 200 fps more if you keep moving up your powder charge. It's plenty of velocity for the bullet to work properly, but why shoot a 7 Mag if you run it slow. When you say "long range", that tells me beyond 600 yards. So, all the speed you can get is better, but it will still possible.
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#5884362 - 08/18/15 12:46 PM Re: 7mm reloading [Re: Team By-God]
Team By-God Offline
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Registered: 12/14/09
Posts: 1501
Loc: odessa tx
My brother took it out and shot it at 600 yds and also his 7mm ultra with the same bullet, shooting steel plate.. ultra blew thru, 7mm rem exploded on impact, that kind of bothers me ..

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#5884364 - 08/18/15 12:50 PM Re: 7mm reloading [Re: Team By-God]
Team By-God Offline
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Registered: 12/14/09
Posts: 1501
Loc: odessa tx

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#5884373 - 08/18/15 12:55 PM Re: 7mm reloading [Re: Team By-God]
cabosandinh Online   content
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Registered: 08/12/13
Posts: 1272
Loc: Dallas, TX
Originally Posted By: Team By-God
My brother took it out and shot it at 600 yds and also his 7mm ultra with the same bullet, shooting steel plate.. ultra blew thru, 7mm rem exploded on impact, that kind of bothers me ..


that tells me you don't have AR500 Steel Plate

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#5884379 - 08/18/15 12:59 PM Re: 7mm reloading [Re: Team By-God]
ChadTRG42 Online   happy
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Registered: 09/16/09
Posts: 10237
Loc: Lewisville, TX
Originally Posted By: Team By-God
My brother took it out and shot it at 600 yds and also his 7mm ultra with the same bullet, shooting steel plate.. ultra blew thru, 7mm rem exploded on impact, that kind of bothers me ..


They all do that!!! If you are using thin mild steel (non AR500), almost all bullets will blow through mild steel. And all bullets will fragment (not explode) on impact on steel.
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#5884467 - 08/18/15 01:47 PM Re: 7mm reloading [Re: Team By-God]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 19151
Loc: Wolfe City, TX
What is your powder charge of Retumbo that is pushing a 160 gr @ 2790 MV?
How long is the barrel?

My 7 Rem Mag has a 26" Rock Creek stainless 1:8" twist
Retumbo 71.2 gr compressed
180 gr. Berger, 3020 fps MV

I have loaded for two other 7 Rem Mags and they all started shooting the best on a compressed load of Retumbo. Once I see extractor swipe I proceed with caution.
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#5884596 - 08/18/15 03:10 PM Re: 7mm reloading [Re: Team By-God]
Team By-God Offline
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Registered: 12/14/09
Posts: 1501
Loc: odessa tx
Not max.. only had time for 2 loads after that lost 1st day. 68 and 69 is all i did, but with my brother shooting the 68 grouped better.. maybe i need to get the gun and try upping the charge..

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#5884599 - 08/18/15 03:12 PM Re: 7mm reloading [Re: ChadTRG42]
Team By-God Offline
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Registered: 12/14/09
Posts: 1501
Loc: odessa tx
He shot the same plate with both guns and same bullet, the ultra went thru, the.7mm rem exploded on impact..
Originally Posted By: ChadTRG42
Originally Posted By: Team By-God
My brother took it out and shot it at 600 yds and also his 7mm ultra with the same bullet, shooting steel plate.. ultra blew thru, 7mm rem exploded on impact, that kind of bothers me ..


They all do that!!! If you are using thin mild steel (non AR500), almost all bullets will blow through mild steel. And all bullets will fragment (not explode) on impact on steel.

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#5884643 - 08/18/15 03:40 PM Re: 7mm reloading [Re: Team By-God]
Team By-God Offline
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Registered: 12/14/09
Posts: 1501
Loc: odessa tx
24" barrel

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#5884650 - 08/18/15 03:44 PM Re: 7mm reloading [Re: Team By-God]
ChadTRG42 Online   happy
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Registered: 09/16/09
Posts: 10237
Loc: Lewisville, TX
The 7 RUM is pushing that 160 about 3200 fps compared to your slower 2790 fps, which is a difference of about 400 fps. That's a big difference. Also, bullets never explode, they fragment.
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www.DallasReloads.com
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#5884805 - 08/18/15 05:24 PM Re: 7mm reloading [Re: Team By-God]
Team By-God Offline
Pro Tracker

Registered: 12/14/09
Posts: 1501
Loc: odessa tx
Ultra mag is at 3130fps, still a big difference.

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#5888313 - 08/20/15 08:23 PM Re: 7mm reloading [Re: Team By-God]
Team By-God Offline
Pro Tracker

Registered: 12/14/09
Posts: 1501
Loc: odessa tx
Chad was saying that 2790 was basically starting loads for the 7mag/160g/retumbo combination.. my load data says 69.5 max we went with 68 and 69, even the 69 wasnt flirting with the 3000fps mark, dont remember the exact number , but not alot over the 68g charge and the 2790fps. How is that 180 building speeds over 3k? Is it all barrel length? Kind of confusing..

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