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Tikka T3 - Excessive Copper Fouling / Accuracy Issues?

 
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  #1  
Old 10-20-2013, 02:51 PM
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Join Date: Feb 2011
Location: Huntsville, AL
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Tikka T3 - Excessive Copper Fouling / Accuracy Issues?

Wondering if anyone could help me in getting my Tikka T3 Lite chambered in 270 WSM to shoot 1 MOA or better. When shooting factory ammo - Winchester Ballistic Silvertip 130gr and the reloads I have worked up (data listed below) the gun shoots consistently around 1 Ύ - 2” MOA.

One thing I noticed is that you have to clean this rifle after every range session at around 25-30 rounds as you will see a lot of excessive copper fouling in the bore and the groups will really start to open up. Maybe this is conducive of 270 WSM’s in general I don’t know. My buddy has a Winchester Model 70 Super Shadow and with his gun shooting the same reloads it will shoot Ύ” MOA at 100yards all day long and does not produce the fouling I see in mine. Different guns I know. One of the issues I have had with this gun is that it seems to have an excessively long throat, i.e. I can seat the bullet well past the allowable magazine length in order to get 0.010 off the lands.

Maybe I am asking for too much but I would think at 100yrds this gun should be able to shoot under 1” MOA?

Another thread here on the fourm similar issues but no real resolution- Tikka T3 problems

Here is what I am running right now:
Approximate round count 200-250 down the pipe. Rifle was bought new in 2008 shot occasionally here and there with 3-4 years with zero rounds down range due to deployments.

Rifle – Tikka T3 Lite
Caliber – 270 WSM
Barrel Length – 24.37”
Barrel Twist Rate – 1:10"

Scope – Leupold VX-2 6-18x40mm Adj Obj Riflescope, CDS, Fine Duplex Reticle (It’s a scope I had lying around so I decided to throw it on to trying and alleviate a lot of me in the accuracy testing process; way to much magnification for a hunting rig)

Mount – DNZ Game Reaper One Piece Medium Mount

Rifle stock screws (Front/Rear) troq'ed to 35-40 in lbs as per manufacture recomendations. Scope rings properly torq'ed as well.

** Reloading data is from the Hornady 6th edition book **

(Min Charge – 52.8 2800 fps – Max Charge –60.0 gr 3100 fps; I don’t own a chronograph so I don’t know exactly what the true velocity is)

Current Reload Data:
Bullet – Hornady 130 gr SST
Powder – IMR 4350 57 gr
Primer – WIN WLRM
COL: 2.824”

Any assistance would be appreciated,
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  #2  
Old 10-20-2013, 03:13 PM
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Join Date: Apr 2010
Posts: 751
Re: Tikka T3 - Excessive Copper Fouling / Accuracy Issues?

I had the same issues and eventually switched to H4831sc and 130 gr Barnes TTSX. I tried many different powders and bullet combos.
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  #3  
Old 10-20-2013, 10:26 PM
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Join Date: Feb 2011
Location: Huntsville, AL
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Re: Tikka T3 - Excessive Copper Fouling / Accuracy Issues?

Currently I have zero pressure signs other than the copper fowling. My next step is to start from the bottom say 53 grains and work up in 5 grain increments shooting 3 round groups at 100yards and see what happens on paper. I may very well have to swap powder / bullet combos but would like to see if I can get my current reloading supplies to work out.
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  #4  
Old 10-20-2013, 10:56 PM
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Location: GSP, SC, USA
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Re: Tikka T3 - Excessive Copper Fouling / Accuracy Issues?

If Fouling is the only problem, try the 130 GMX. Never tried the SSTs but I got some just in case. It fouls less than the Barnes in my Tikka T3 in 338WM. May even more accurate also! Nellie loves 185 GMXs.
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  #5  
Old 10-20-2013, 11:04 PM
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Join Date: Feb 2011
Location: Huntsville, AL
Posts: 55
Re: Tikka T3 - Excessive Copper Fouling / Accuracy Issues?

I'll be honest I really could care less about the fowling just looking to get the rifle to shoot 1 MOA if possible. If I need to clean more frequently so be it.
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  #6  
Old 10-21-2013, 12:01 AM
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Join Date: Mar 2012
Location: Bozeangeles
Posts: 158
Re: Tikka T3 - Excessive Copper Fouling / Accuracy Issues?

I can't address the fouling, but I can add something about that particular scope. Send it in- they're prone to recoil induced stickiness. Mine went from great to horrible on my 7wsm, then miraculously returned to great after I sent it in. It's happier on a tamer gun now.
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  #7  
Old 10-21-2013, 08:01 AM
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Join Date: Dec 2008
Posts: 55
Re: Tikka T3 - Excessive Copper Fouling / Accuracy Issues?

I recommend scrubbing with JB Bore paste and a tight fitting patch for a few hours, then shoot 5 or 6 shots, scrub clean again for an hour, shoot 10 over the course of an hour and come back then next day and see how it groups.
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