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Author Topic: 7mm Weatherby ammo ?  (Read 1275 times)

Offline Badhabit

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7mm Weatherby ammo ?
« on: March 28, 2018, 05:55:02 PM »
My 7mm Weatherby has a 1:10 barrel twist as compared to the 7mm Rem Mag that has a 1:9.25 barrel twist. My question is what's the heaviest grain bullet I can shoot accurately with the 1:10 twist. My research is showing me that a 160 grn bullet is more stable than than the 175 grn. Apparently something happens do to the twist to destablize the bullet beyond 168 grns. My reloads for my 7mm Weatherby before it was stolen was  175 grn nosler partion with 80 grns of H870. Now that I've replaced the stolen 7mm I have to start all over as H870 is no longer manufactured. I'm thinking of having Nosler reload a box or two of their 160 grn  accubonds. While they are on sale at $73.00 a box. My goal is to have one hunting load to do everything. Stay with the 175's? The ballistic coefficients for the .284 bullets are really pretty good. I think the 160 grn are better thann the 175.

Offline jasnt

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Re: 7mm Weatherby ammo ?
« Reply #1 on: March 28, 2018, 08:50:27 PM »
With prices like that I'd start reloading
https://www.howlforwildlife.org/take_action  It takes 10 seconds and it’s free. To easy to make an excuse not to make your voice heard!!!!!!

The commission shall attempt to maximize the public recreational game fishing and hunting opportunities of all citizens, including juvenile, disabled, and senior citizens.
https://apps.leg.wa.gov/RCW/default.aspx?cite=77.04.012

Offline Oh Mah

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Re: 7mm Weatherby ammo ?
« Reply #2 on: March 28, 2018, 08:56:43 PM »
JBM CALCULATIONS-STABILITY. This is a on line calculator i use to figure the weight to twist often.   :tup:
"Boss of the woods"
(this is in reference to the biggie not me).

Offline Badhabit

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Re: 7mm Weatherby ammo ?
« Reply #3 on: March 29, 2018, 08:45:45 AM »
Oh Mah, thank you for the site. I'll have to take a day or two or three to figure out how to input good information to get good information. Lots of terms I've never heard of before.

Offline Oh Mah

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Re: 7mm Weatherby ammo ?
« Reply #4 on: March 29, 2018, 12:35:30 PM »
 :tup:
"Boss of the woods"
(this is in reference to the biggie not me).

Offline Badhabit

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Re: 7mm Weatherby ammo ?
« Reply #5 on: March 29, 2018, 01:44:50 PM »
Oh MaH, your inbox is full.

When I get a stability factor for a bullet is 1.259 vs 1.188 is the higher the number the more stabile?

Offline jasnt

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Re: 7mm Weatherby ammo ?
« Reply #6 on: March 29, 2018, 01:54:37 PM »
Yes. Anything over 1.2 is go to go
https://www.howlforwildlife.org/take_action  It takes 10 seconds and it’s free. To easy to make an excuse not to make your voice heard!!!!!!

The commission shall attempt to maximize the public recreational game fishing and hunting opportunities of all citizens, including juvenile, disabled, and senior citizens.
https://apps.leg.wa.gov/RCW/default.aspx?cite=77.04.012

Offline Oh Mah

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Re: 7mm Weatherby ammo ?
« Reply #7 on: March 29, 2018, 02:09:52 PM »
yes if you dig through that site you will see a go no go chart.but yes like jasnt said.  :tup:
"Boss of the woods"
(this is in reference to the biggie not me).

 


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