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7 Rem Mag powder question

 
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  #1  
Old 05-18-2012, 01:48 PM
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7 Rem Mag powder question

I am going to do some 7 RM reloading for a friend who has a nice Remington 700, and have never reloaded for this cartridge myself.

To save time in the reloading process I was wondering if I could get some advice on a powder that will give ~95% case capacity using a 160 grain Accubond. Also worked through the bullet seating issue and seating .025 off his lands puts the bullet about .030" longer than listed max length (his magazine box handles this no problem).

Goal is to come up with a good performing round without too much load development accurate enough for shots out to 400 yards... not looking to squeeze every last fps out of the reloads and do NOT want to compress the load.

Thanks for the help!
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  #2  
Old 05-18-2012, 03:11 PM
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Location: The cold part of Montana
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Re: 7 Rem Mag powder question

The load your looking for can be found right in the Nosler manual, save a lot of searching, give me another hour and i can post some up for you.
These are from the Nosler manual all loads using fed 215 primer

Most accurate powder most accurate charge Viht N165 61.0gr (book max load) Listed vel 2904fps

IMR 4350 most accurate charge 60.0gr (book max load) vel 2998

IMR4831 most accurate charge 63.0gr (book max load) vel 3008

RL19 most accurate charge 61.5gr (book max load) vel 3046

RL25 most accurate charge 68.0gr (middle of the list charge) vel 2989

Magpro most accurate charge 68.0gr (book listed min) vel 2930

Last edited by Joe King; 05-18-2012 at 06:10 PM.
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  #3  
Old 05-18-2012, 07:01 PM
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Re: 7 Rem Mag powder question

I have had great results with IMR 7828 in 3 7 rem mags. But his gun may not like this. IMR 4831 is a great powder too.
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  #4  
Old 05-18-2012, 08:35 PM
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Re: 7 Rem Mag powder question

rl22 or 7828. Usually you can get to top speed with 4350 or slower.

I've had a few 7mags, and they've all loved one or the other. My present 7mag is a m700 and with 150 noslers I'm using 7828, but with 140 sierras I'm using 4064, as it wouldn't group in cold weather with the 140 and 7828. When the 4064 loads are shot up, I'll switch to rl22 as it works too. I treat my 7mag as a can gun, so I won't pull ammo unless it won't shoot well. Speed matters little at 100 to 200 yards on paper.
I haven't seen a 7mag yet that will keep up with some of the book velocities with the powder charges shown, so don't be surprised if it is a bit slow with some combinations. I've gone to bigger 7mm's to hunt with partly because of this.
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Old 05-18-2012, 08:58 PM
Edd Edd is offline
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Re: 7 Rem Mag powder question

Quote:
Originally Posted by Timber338 View Post
I am going to do some 7 RM reloading for a friend who has a nice Remington 700, and have never reloaded for this cartridge myself.

To save time in the reloading process I was wondering if I could get some advice on a powder that will give ~95% case capacity using a 160 grain Accubond. Also worked through the bullet seating issue and seating .025 off his lands puts the bullet about .030" longer than listed max length (his magazine box handles this no problem).

Goal is to come up with a good performing round without too much load development accurate enough for shots out to 400 yards... not looking to squeeze every last fps out of the reloads and do NOT want to compress the load.

Thanks for the help!
Use H1000. Start lower but you are probably going to end up using about 70 gr of it.
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  #6  
Old 05-19-2012, 08:43 PM
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Re: 7 Rem Mag powder question

My first choice would be H 870 followed by IMR 7828 and 4831. I would also give H1000 a try.
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  #7  
Old 05-19-2012, 08:45 PM
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Re: 7 Rem Mag powder question

Look no further than H4831sc, I use 67.5grns under a 162 amax on the lands, 3.406" oal fed210m pmiers, federal brass. 3042fps avg 8-12fps ES 24" barrel, but since every rifle is different start around 64grns. Second choice has already been mentioned and is also a great choice and that's H1000 with cci250s at 69-72grns.
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