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Model 700 Mountain Rifle problem

 
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  #15  
Old 03-19-2013, 11:41 AM
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Join Date: Nov 2012
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Re: Model 700 Mountain Rifle problem

Quote:
Originally Posted by BrentM View Post
IMR 4350 at 54.5 and 56.5 grains with 180 accubonds works in my 3006. I zeroed at 300 and it shoots 1.25 to 1.75 groups with 54.5/56.5. At 100 it shoots .35 and .65 54.5/56.5 respectively. I just shot for accuracy and didn't worry to much about velocity at the time. I actually prefered the 165's for recoil but the high BC of the 180 seemed better so I loaded it up. I never planned to shoot beyond 300 - 400 so I don't know if the BC is that important now. I think 165's were 450ish and the 180's are 507.
Brent....is your 30-06 a Model 700 Mtn rifle? if so, very impressive!
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  #16  
Old 03-19-2013, 02:37 PM
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Location: Meridian, Idaho
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Re: Model 700 Mountain Rifle problem

Well, I guess it is not designated that. It is a 700 bdl with the same basic design except it is not pillar and bedded factory stock. It is a wood standard stock. Light, accurate, and left handed.....or I mean correct handed. LOL
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  #17  
Old 03-20-2013, 07:59 AM
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Join Date: Feb 2012
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Re: Model 700 Mountain Rifle problem

im a bit confused. Did you try 6 differnt loads with the same 180 grain bullet or one load with 6 differnt bullets. Either way youve only just begun a search for an accurate load. thing is i doubt anyone on here can give you the exact load thats going to work for you. Every gun is a differnt animal, especially thin barreled guns like the mountain rifles. You may get lucky early in load developement but it usually requires a good ammount of bench time to find a load for a gun like that that shoots moa.
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  #18  
Old 03-20-2013, 09:38 AM
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Re: Model 700 Mountain Rifle problem

Thanks for the reply. The loads were of different shapes, powders and manufactures. I was primarily trying to find out if anyone's 700 Mtn rifle would group 180 grain. Mine loves 150's. I was afraid that with the wimpy light barrel that 180's would be out of the question.
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  #19  
Old 03-20-2013, 10:08 AM
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Location: Meridian, Idaho
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Re: Model 700 Mountain Rifle problem

Correct me if I am wrong, but barrel whip is a function of harmonics timing at the time the bullet exits the muzzle. If I am correct, the harmonic wave needs to be more toward the action when the bullet leaves the muzzle which means the muzzle at that specific time is the most stable.

My 3006 has a light contour barrel for sure and it had two accuracy nodes at the time I worked up some loads. You might, if you feel like, take the powder you prefer and ladder test it, then seat the bullets to a good depth the rifle likes, then work up a load in increments of .5 grains to see if you find a node.

My 06 is at .015 off the lands I believe.
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  #20  
Old 03-21-2013, 03:50 PM
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Re: Model 700 Mountain Rifle problem

I used the barrel bedding technique I found in, "Sporting Rifles, A designer's Notebook,' to cure my lightweight 30-06 of this same problem. This technique allows varying the barrel dampening pressure at will until the "sweet spot" is located.
RF
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  #21  
Old 03-21-2013, 06:43 PM
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Join Date: Nov 2012
Posts: 13
Re: Model 700 Mountain Rifle problem

We spent a lot of time on the range today. With the 180gr bullets (three handloads and one factory) the best we could get was about a 3 inch group at 100yrds. We varied the torque on the action screws a few inch lbs both up and down without any luck. Switched back to 150grs and shot two 1/2 MOA groups. We also tried 165 and 168gr loads. The 165's didn't perform but the 168's shot two groups of 1 MOA...not bad. I guess my 700 Mtn rifle just hates 180's.

Question: Should I stick with the 168's for elk or would I be OK with the 150's? I was sure hoping to get the 180's to group.
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