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Reloading Berger Bullets


best 7mag powder

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Unread 01-31-2006, 03:39 PM
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Join Date: Jan 2006
Location: Arizona
Posts: 320
best 7mag powder

i am pretty new to reloading and was wondering what everyone likes out of a 7mag. the powder needs to meet these requirements:
i am going to shoot 140 accubonds, or 139 interbonds, i would like the highest veloctiy possible with the most consistent and accurate powder. powder needs to be pretty temperature in sensitive. i sight in at over 7,000 ft and hunt around 3500-4500. i do not know anything about powder burning speed, or ball powder vs kernel. the only ball powder i have ever shot was ramshot out of my 270wsm to test the load. i have loaded some R22 and got decent results with the 140 accubond, at aroun .975 but looking for something to shoot tighter.
77" coues buck, last day 571 yards. .257 Wby. 115 VLD
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Unread 01-31-2006, 05:09 PM
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Join Date: Jan 2006
Location: Nebraska
Posts: 507
Re: best 7mag powder

I use H4350 with Barnes 140 gr TSX bullets in my 7mm Mag.

Here is a link to Hodgdon loading data (only maximum loads are shown).


and here is a link to the temperature variability of H4350 and other Hodgdon "Extreme" Powders. With a comparison to competitive powders.

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Unread 01-31-2006, 05:34 PM
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Join Date: Jan 2005
Posts: 126
Re: best 7mag powder

Work up to it but I have been shooting 71 gr IMR 7828ssc with very good results in a M700 and a Ruger#1.
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Unread 01-31-2006, 08:26 PM
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Re: best 7mag powder

Reloader 19 and 22 have both worked extremely well for me in my 7mm Rem Mag with 140 gr bullets. Obviously the two 4831s are also a good match to this bullet weight in this case as they are very similiar in burn rate with R-22.

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Unread 01-31-2006, 08:37 PM
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Join Date: Dec 2001
Location: Potters Hill, NC
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Re: best 7mag powder

I have had the best results with Hodgdon and IMR 4831 and RL22. I shoot mostly 150gr pills with RL22 (67gr) and CCI BR2's. I load quiet a bit of the 4831's for friends, however. Johnny K.
"The only thing necessay for the triumph of evil is for good men to do nothing."
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Unread 02-22-2006, 08:37 PM
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Join Date: Jan 2006
Posts: 1
Re: best 7mag powder

I shoot a Rem. 7mm. Not the lighter bullets , but the Hornady 162 Grn Soft Pt.B/T w/ 64grns. Accurate 3100 Magnum powder. I feel good about the results. Brass has held up well.
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Unread 02-22-2006, 09:27 PM
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Join Date: Jul 2005
Location: East TX
Posts: 773
Re: best 7mag powder

With 140 gr class bullets, I always had the best results with RL 19. My brother tried to top it trying some IMR 4064, but the loads were too hot for N TX heat. I would think H4350 would probably be the best powder of the Hodgdon line for the 140s. If you stepped up to the 160+, H1000 and Retumbo would take over. There is my 2c!

I just reread your post, H1000 would get my vote! The RL poweders drop some velocity pretty quick below about 45F and above 90-95F according to my chrono'd loads in a 300WM. H1000 did not change more than 20 fps from 35-105F.
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