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7mm Rem Mag, 140gr Accubonds

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Old 01-18-2008 | 12:11 PM
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Default RE: 7mm Rem Mag, 140gr Accubonds

jeepkid - You will like the 140gr AccuBonds. I've been shooting them since they came out, I'm using a max load of RL22, and I don't have a chronograph, so I can't tell ya what they're running.

This is actually the first year I didn't shoot anything besides paper with them. I used the 120gr Barnes TSX this year, cranked as hot as the handbook said. I really need to buy a Chrony to see whats going on.
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Old 01-18-2008 | 01:32 PM
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Default RE: 7mm Rem Mag, 140gr Accubonds

Hopefully they will work out. I ran a bunch different bullets through a ballistics calculator and they came out on top in pretty much everything. Even better then the Bergers and A-Max's past 400 yards.
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Old 01-19-2008 | 11:29 AM
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Default RE: 7mm Rem Mag, 140gr Accubonds

ORIGINAL: jeepkid

That seems a little slow, I was hoping to get around 3200-3300 with them...
I use H4831 with the 140-grain Nosler Partition bullet in my Ruger No. 1 7mm Rem Mag., and I get 3350 FPS @ 10' from the muzzle of the 26" barrel. But MY load might be too hot for your rifle. IF you want to try to work up to it, in 0.5 grain increments, start at 66 grains. Work up until you get the best accuracy and/or the velocity you want! LOOK FOR PRESSURE PROBLEMS while working up! Quit increasing the powder charge if you get any!! Drop 5% from any charge that gives excessive pressure indications (like loosening primer pockets, sticky bolt lift, etc.)
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Old 01-19-2008 | 11:35 AM
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Default RE: 7mm Rem Mag, 140gr Accubonds

ORIGINAL: hunter5325

I've found 3300fps very doable in most every 7 I've loaded for. Nosler's powder charges will give you 200-300fps less than they show with the same charge with all the 140/7mag loads I've chronoed. Thier velocities can be reached but you must tilt the powder can. I've found 70grs of R22 will give me 3310fps with Accubonds in my 26" tube. I only got to about 3200fps with R19, IMR4831and Magprobefore I saw high pressure. I think 19 istoofast for 140's in the 7. Of course you need tobeginat the bookstart chargesand work up slowly as all guns are different.
Brett
I've noted pretty much the same things as hunter discovered. Nosler velocities are very optimistic for those powder charges. They must have a very "fast" barrel!
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Old 01-19-2008 | 11:56 AM
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Default RE: 7mm Rem Mag, 140gr Accubonds

I agree mwith the others that Nosler numbers are "optimistic". My Rem Mag likes RL22 and I need to go to the 70gr area to achieve them with 140gr bullets. Liked mentioned work up slowly and at the first sign of excessive pressure back off.

As far as the AB i have only shot paper with the 140's but have used thre 160's for deer, elk and moose. I was happy with the performance. For whatever reason the AB's haven't been the best in terms of accuracy in my rifle, their good I just have other loads that shoot great and dowhat I need.BTW isn't indicative to the AB IME, I have loaded them for several other rifles with excellent results on paper.
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