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Joined: Dec 2010
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Looking for powder suggestions for my 257 Roberts.

Rifle is a Ruger M77 (long action)
Bullets will be Barnes 100gr TSX and TTSX.

Thanks all


I am Canadian.
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IMR 4895


"...the left considers you vermin, and they'll kill you given the chance..." Bristoe
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H4350. 46-47 grains.


Anybody who seriously concerns themselves with the adequacy of a Big 7mm for anything we hunt here short of brown bear, is a dufus. They are mostly making shidt up. Crunch! Nite-nite!

Stolen from an erudite CF member.
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IMR 4831


A Doe walks out of the woods today and says, that is the last time I'm going to do that for Two Bucks.
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H4350


“There are some who can live without wild things and some who cannot.”
ALDO LEOPOLD
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IMR4064 will normally give some good loads but I like H4350.

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Anyone tried RL15 ?

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I had great luck with RL15 and the 75 grainers, I think it is too fast burning for the 100s.


Anybody who seriously concerns themselves with the adequacy of a Big 7mm for anything we hunt here short of brown bear, is a dufus. They are mostly making shidt up. Crunch! Nite-nite!

Stolen from an erudite CF member.
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My Dad is using RL15 in his SA Model 70 with a Douglas barrel. Shoots great with 100 gr. boolits, right at 3000 with a 22"....

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+2 for H4350.

The JB load is 46.0 with 100 grain bullets.

Easy to load, easy to shoot.

Steve

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IMR4350 has been the powder in my rifle. With 100 gr bullets or up to 117 gr bullets.


PASS IT ON!
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Originally Posted by Karnis
My Dad is using RL15 in his SA Model 70 with a Douglas barrel. Shoots great with 100 gr. boolits, right at 3000 with a 22"....


His load is 42.0 grains, approach with caution..........

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efw Offline
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My AI loves RLs -15 & -17, but the standby is IMR-4350.

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[Linked Image]

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Originally Posted by deg967
Anyone tried RL15 ?


Yep, used Nosler #6 book max load with 85 NBT. Think it was 43.5 grains. Shot well in my Montucky Bob...


“There are some who can live without wild things and some who cannot.”
ALDO LEOPOLD

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