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340 Wby, 250gr bullets, and N560?
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exabit
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Hi,

Has anyone loaded their 340 Wby with 250gr and heavier bullets using Vihtavuori N560 powder?

I have a lot of loads with Norma MRP, but I've acquired a can of N560 and I'd like to give it a try.


/ Rikard
 
Posts: 209 | Location: Sweden | Registered: 30 October 2003Reply With Quote
cal30 1906
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If I can bend your ear on this one I always use
RL-19 for this load.

250 at 2900-3000 fps but the recoil is nasty.

FWIW




If it cant be Grown it has to be Mined! Devoted member of Newmont mining company Underground Mine rescue team. Carlin East,Deep Star ,Leeville,Deep Post ,Chukar and now Exodus Where next? Pete Bajo to train newbies on long hole stoping and proper blasting techniques.
Back to Exodus mine again learning teaching and operating autonomous loaders in the underground. Bringing everyday life to most individuals 8' at a time!
 
Posts: 3082 | Location: Northern Nevada & Northern Idaho | Registered: 09 April 2005Reply With Quote
exabit
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Thanks.

A chap in Sweden gave me printouts from QuickLoad for my specific rifle and bullets, with N560.

Seems like it's almost impossible to exceed 2950 fps with a 250gr bullet no matter which powder you use.

Although it might be different from rifle to rifle of course.


/ Rikard
 
Posts: 209 | Location: Sweden | Registered: 30 October 2003Reply With Quote
cal30 1906
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quote:
Seems like it's almost impossible to exceed 2950 fps with a 250gr bullet no matter which powder you use.



I chronogrophed the factory Weatherby ammo that I bought at the time and it was right on the money for fps.

A guy with a 30" canyon busting barrel can hit almost 3175 fps.
recoil is fierce...
They load them Hot!




If it cant be Grown it has to be Mined! Devoted member of Newmont mining company Underground Mine rescue team. Carlin East,Deep Star ,Leeville,Deep Post ,Chukar and now Exodus Where next? Pete Bajo to train newbies on long hole stoping and proper blasting techniques.
Back to Exodus mine again learning teaching and operating autonomous loaders in the underground. Bringing everyday life to most individuals 8' at a time!
 
Posts: 3082 | Location: Northern Nevada & Northern Idaho | Registered: 09 April 2005Reply With Quote
exabit
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quote:
Originally posted by cal30 1906:
I chronogrophed the factory Weatherby ammo that I bought at the time and it was right on the money for fps.


Norma use a special powder for the Weatherby factory ammo which "isn't available to the consumer", as they say themselves.

Maybe this explains the added velocity.


/ Rikard
 
Posts: 209 | Location: Sweden | Registered: 30 October 2003Reply With Quote
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