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Velocity out of a 7WSM using 176 Cauterucio?

 
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  #1  
Old 03-14-2004, 03:10 PM
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Velocity out of a 7WSM using 176 Cauterucio?

What kind of velocity could I get out of a 7WSM 24" barrel loading in a 176gr Cauterucio? And how much velocity could I gain going to a 28" or 30" barrel?
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Old 03-14-2004, 07:00 PM
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Re: Velocity out of a 7WSM using 176 Cauterucio?

I had two 7 wsm that I recently shot out. You should be able to get around 3000FPS with 70.0 grains of Retumbo with the 176. That is a max load so start lower and work up. Your 24 inch barrel is all you need on the wsm. You wont gain any more speed with a longer barrel on that cartidge. My 28.5 inch barrels wouldn't gain any more speed than my brothers gun with a 24 inch tube. I think anything longer than a 26 inch tube on a wsm just gets bullet drag. Thanks Reed
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Old 03-14-2004, 07:37 PM
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Re: Velocity out of a 7WSM using 176 Cauterucio?

Hmmmmm, this is sounding sweeter all the time. Just maybe this will be what I chamber my ultralight mountain rifle in. [img]images/icons/smile.gif[/img]
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Brent Moffitt
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Old 03-14-2004, 08:04 PM
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Re: Velocity out of a 7WSM using 176 Cauterucio?

Reed,

Hey what kind of setup did you have (action barrel stock etc) ...you say you
shot them out? How many rounds did you get out of them before you started
losing accuracy?
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Old 03-15-2004, 11:02 PM
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Re: Velocity out of a 7WSM using 176 Cauterucio?

I had two of them in blue printed savage actions with kevin rayhills 3 inch wide longe range hunting stock with bision barrels and sharp shooter triggers, vias style muzzle breaks. Both guns shot extremely well until I ruined them. last summer I got both of them at around the same time and started shooting IMR 5010 through them because i could not get ahold of retumbo yet. But what I didn't know is that the 5010 was not being burnt completely in my barrel and was acting like molten hot sand blasting. The throats in both my guns look fine, but the rifeing lost is sharpness and smoothness. Throats look good but bores are rough as cobs. It makes me sick I ruined $800 worth barrels last summer. The really bad part is that both would shoot under a quater inch no problem. Live and learn, but that a expensive mistake. I hold nothing against the barrels or cartidge my own stupidy ruined the barrels. You should of seen the muzzle crowns on those guns after running 4 pounds of 5010 through them, it looked something was chewing on them. [img]images/icons/rolleyes.gif[/img]
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Old 03-17-2004, 02:21 PM
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Re: Velocity out of a 7WSM using 176 Cauterucio?

Reed, retumbo is slower than the powders that I have seen on here and other sites that have been recommended for the wsm calibers. My own 300 wsm likes IMR 7828 better than H4350 for accuracy while H4350 is probably the powder that I have seen reccommended the most for my caliber. Have you tried retumbo yet and if so what kind of results have you soon ? Since my gun likes Imr 7828 I have been thinking about trying H1000 because it might be less temperature sensitive while being fairly close to the burn rate of IMR 7828. I welcome any comments concerning this.
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Old 03-17-2004, 02:25 PM
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Re: Velocity out of a 7WSM using 176 Cauterucio?

Sorry Trader, after reading my post I guess it doesn't stay with your original question ? I should have posted a new question ?
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