257 Weatherby 92 Hammer Hunter Factory load pulled?

6.5x300 WBY said:

When you pull it i am going to bet it's a duplex load. Now what powders? But duplex of some sort

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DLJ6 said:

Has anyone pulled one of these yet to check the charge?
I am very impressed, the first three rounds out of my 307 did:
3702.2, 3704.8 and 3704.2fps according to my Garmin at 500ft.
Sub MOA. I will pull one and report back if anyone hasn't yet. I am concerned they may've used RL-26.

By comparison, my hand loads of 77.0grns of Ramshot Magnum under a Barnes 80grn TTSX lit by a Fed215 only averaged 3611.0fps at 1525ft elevation but was also sub MOA.

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MagnumManiac said:

Why do you say that?
Intriguing minds…

Cheers.

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MagnumManiac said:

Doubt Weatherby ammo of any kind has US branded powder.
Norma makes all of Weatherby's ammo under license, have heard they outsource some of it, but they refuse to agree or deny such info.
Most of what of I've seen is in fact Norma powder, either ball or short cut extruded. It is not canister powder either, loads do not match loading manual weights or velocities.

Cheers.

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VinceMule said:

I had a 10T with Pac Nor super match, three groove barrel with zero freebore in 257 Weatherby where I shot the 85-87's at ~4130 fps with R#19 and Fed 215's. Sub 38" accuracy that turned coyotes inside out.

The same barrel shot in the high 2's with 72-73g of R#22 with 215's and 100g of various types at 3850. Even the 100g Partitions shot 1/2" out of this barrel. I have had a number of 257's, every one of them loved R#22 with 215s with 100s.

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