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 Post subject: 7mm Mauser by Federal
PostPosted: Fri Sep 08, 2017 3:04 am 
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Joined: Thu Apr 06, 2006 8:42 am
Posts: 13196
Location: Washington State
This just might be of interest to some folks here on the Nosler Forum:

A 7mm Mauser factory load with the 160 gr Accubond at 2900 fps! That's only about 100 fps behind the 7mm Rem mag...

https://www.federalpremium.com/ammuniti ... bond/p7ra1

Thought it worth mentioning, I know there's some love for the 7mm Mauser here.

Guy


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 Post subject: Re: 7mm Mauser by Federal
PostPosted: Fri Sep 08, 2017 6:15 am 

Joined: Fri Dec 07, 2007 2:58 pm
Posts: 98
Location: Warrens, WI
I'm thinking it is a miss print. The cartridge box in the picture says 7mm Remington Magnum.


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 Post subject: Re: 7mm Mauser by Federal
PostPosted: Fri Sep 08, 2017 8:26 am 
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Joined: Thu Apr 06, 2006 8:42 am
Posts: 13196
Location: Washington State
Ya. Clear as mud.

Can a handloader even get 2900 fps with a 160 gr bullet from a 7mm Mauser?

Guy


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 Post subject: Re: 7mm Mauser by Federal
PostPosted: Fri Sep 08, 2017 8:39 am 

Joined: Wed Nov 08, 2006 2:49 pm
Posts: 32500
Location: Northern British Columbia
Guy Miner wrote:
Ya. Clear as mud.

Can a handloader even get 2900 fps with a 160 gr bullet from a 7mm Mauser?

Guy


QL projects 2700+ with RL26, which is about as good as it gets. This is with a 24 inch barrel.

Cartridge : 7 x 57 mm Mauser (SAAMI)
Bullet : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 50.321 grain H2O = 3.267 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-26

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-10.0 93 46.62 2446 2126 34731 9612 95.4 1.498
-09.0 95 47.14 2478 2182 35981 9731 96.0 1.477
-08.0 96 47.66 2510 2238 37286 9845 96.5 1.455
-07.0 97 48.17 2542 2296 38642 9953 97.0 1.430
-06.0 98 48.69 2574 2354 40056 10055 97.5 1.406
-05.0 99 49.21 2606 2413 41530 10152 97.9 1.382
-04.0 100 49.73 2638 2472 43068 10241 98.3 1.358
-03.0 101 50.25 2670 2533 44674 10324 98.7 1.335 ! Near Maximum !
-02.0 102 50.76 2702 2594 46351 10401 99.0 1.312 ! Near Maximum !
-01.0 103 51.28 2734 2656 48096 10470 99.2 1.290 ! Near Maximum !
+00.0 104 51.80 2766 2718 49931 10532 99.5 1.268 ! Near Maximum !
+01.0 105 52.32 2798 2781 51844 10587 99.7 1.246 !DANGEROUS LOAD-DO NOT USE!
+02.0 106 52.84 2830 2845 53847 10634 99.8 1.225 !DANGEROUS LOAD-DO NOT USE!
+03.0 107 53.35 2861 2909 55941 10674 99.9 1.204 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 53.87 2893 2974 58135 10705 100.0 1.184 !DANGEROUS LOAD-DO NOT USE!
+05.0 109 54.39 2925 3039 60432 10729 100.0 1.163 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 51.80 2924 3038 63096 10011 100.0 1.154 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 51.80 2535 2283 39361 10268 92.6 1.416

2900 fps would be smokin' for a 7 Mauser.

_________________
γηράσκω δ᾽ αἰεὶ πολλὰ διδασκόμενος.


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 Post subject: Re: 7mm Mauser by Federal
PostPosted: Fri Sep 08, 2017 8:54 am 
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Joined: Thu Apr 06, 2006 8:42 am
Posts: 13196
Location: Washington State
Huh. Well, grry10 may well be right.

For a factory load, 2900 fps with a 160 and the 7mm Rem Mag, is about right.

Guy


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 Post subject: Re: 7mm Mauser by Federal
PostPosted: Fri Sep 08, 2017 9:17 am 

Joined: Wed Sep 29, 2004 8:18 am
Posts: 643
Location: Pacific North West
I would think that speed out of a 7x57 would be screaming with a 160. I'm at 2750 with the 160 Accubond out of a 22 inch Ruger No 1 with IMR 4350. Granted, there are other powders that could boost the speed but I'm good with that. I do have 145 Speer Boat tails going 2940, but that seems pretty stout.


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