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7wsm load development and results

 
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  #8  
Old 09-08-2005, 12:34 AM
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Join Date: Mar 2004
Location: Spokane, WA
Posts: 521
Re: 7wsm load development and results

Ric, Nosler uses V560 for all accuracy testing. Most guys I talk to who shoot the 500 series powders in high power, get average barrel life. I've shot alot of V550 in a 7-08 and haven't had any problems with throat, etc. Of course, using as a hunting rifle will probably never see burn out like a target shooter. V500 series are VERY speedy compared to most powders. Hard to find a substitute if it shoots well. Also, not temperature sensitive, so makes a great hunting powder, maybe not target powder. [img]/ubbthreads/images/graemlins/confused.gif[/img]
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  #9  
Old 09-08-2005, 06:27 AM
 
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Re: 7wsm load development and results

wapiti,

Thank you for the heads up... I talked to Chris about the throat thing and seems that the BR guys were saying this alot but not alot of concrete proof. I will be shooting this rifle alot just cause it is so much fun to shoot....
My main concern is the temp. sensitive issue... out here in Wyo you can hunt the morning at 30* and then by 1 p.m. it could be 75* so the "swings" out here can be drastic especially in the high desert.
What impressed me was the fact I shot 4 different bullets with this powder. and they all printed near the same place... I have velocities of 2800 to 2990 fps... in a range of 150 gr bullets to 175 gr bullets.

The 560 wasn't real hard to clean either...

so far I just like the stuff.. and hell you gotta buy it 2lbs at a time so I need to use it.
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  #10  
Old 09-08-2005, 07:06 PM
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Join Date: Aug 2005
Posts: 558
Re: 7wsm load development and results

wapiti13 and Ric,
did not mean to offend but VV's 5 series powders are double based powders that do work well in certain applications, but they have a higher flame temp. than a single base powder. most shooters on this site have educated me that a single base ball powder has an even lower flame temp. than an extruded powder. just as a final note on the subject, me and goodgrouper used to have absolutely identical 22-250AI's same action ,barrel etc. the only difference was that his barrel loved VVN550 and mine liked IMR4831. I will not re-barrel for several years and goodgrouper has re-barreled some time ago.
not soap boxing but one more item to ponder.GOOD LUCK
UB
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  #11  
Old 09-08-2005, 09:01 PM
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Join Date: Aug 2005
Posts: 6
Re: 7wsm load development and results

I have a GAP 7mm wsm that Chris built and it shoots the 175 SMks great. My favorite load right now it 62 grains of RL22 with 175 SMKs. I tried Retumbo and it shot great also. George recommends 64 grains of H4831SC but it is finally getting cool enough in MS to try that load!
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  #12  
Old 09-09-2005, 05:43 AM
 
Posts: n/a
Re: 7wsm load development and results

uncle B ,

I intend to try a few more powders. Mostly because I do like the Hogdon Powders...

derek,
RL powders shoot wonderfully in alot of rifles but I have found they can't stand the "swings" here in the high desert... not without a bit of anxiety anyway... ;-)
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  #13  
Old 09-09-2005, 06:47 AM
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Join Date: May 2005
Posts: 14
Re: 7wsm load development and results

I've shot alot out of two diff. 7WSM. A Browning and an HS Precision. I've never had much luck w/ 4831, RL-19/22, Magpro or Magnum etc. I've had best accuracy w/ AA4350 and Varget. Mark
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  #14  
Old 09-09-2005, 06:52 AM
 
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Re: 7wsm load development and results

with bullets heavier than 150gr ?
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