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Thompson center icon issues

 
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  #1  
Old 09-20-2009, 12:30 AM
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Location: North Idaho
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Thompson center icon issues

I bought a brand new icon the other day in .308 for about $500.00. Loaded some rounds: Lapua brass, berger 155 vlds and match 210 primers over 46.5 grains of varget. My first 5 round group was around 1/2 an inch. After that stuff started going haywire. I've been shooting and loading for a long time but wanted to get some input from someone on here. I was getting fliers all over the place. Sometimes 3 inches high and to the right and then it would shoot a cloverleaf and the same thing would happen again later. I should have stopped and saved my ammo but I was super frusturated. I have a vx3 on it and I'm wondering of the scope is the issue. Never had a prob. with a leupold but there is a first for everything right? I was wondering if any of you have had this bad of fliers with a copper fouled barrel? Personally I haven't and have never had a scope issuer either so this is kind of new to me. Everything is nice and tight so I will probably swap the scope out tomorrow and try her again. Any ideas would be appreciated. Thanks.
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  #2  
Old 09-20-2009, 12:47 AM
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Re: Thompson center icon issues

Did you break in you barrel or clean it while you were shooting? I bought TC ICON PH in .308 few weeks back, I was at the range today it shot 0.3” groups, but last week I had 0.15” average, did you check you seating depth on your handloads? Do you know your MAX OAL? If you still have issues I can give you an e-mail address of TC customer service rep I worked previously, since they have very tight specs on their riffles I thought I might have head space issue so the customer service rep overnight my rifle back to the factory they checked everything came out fine they overnight it back to me next day, if you think something wrong with your riffle they will be gladly take a look at it. I even ask to retest accuracy on it since my certificate stated 0.8 and I was shooting 0.3” groups with 168 SMK. So they did and new certificated stated 0.54”
By the way did you get $150 rebate on yours?

About fliers, I did have some you described when I decide to test H4895 powder and I used RL 15 before, for some reasons it didn’t like H4895 I had flier in almost every group, say 300 yards 2 shots almost touching and a flier 2 - 3” high, when I switched back to RL 15, 0.9” groups. Try different powder different bullet, I found that my likes 168 – 155 grain SMK or 168 – 155 NCC and 42.6 grain of RL 15 and OAL for 155gr 2.785” and for 168gr 2.815” OAL

By the way with Varget on 155 grain bullets do not exceed 44.8 - 44.9 grains, I know Hodgon lists 47 grains max and 44 as starting, but in reality you can start with 41.5 grains and work your load up, the 44.8 grain load should propel 155 grain projectile with aprox 2800 fps, and accuracy load for 155 grain is 2700 fps
If you check Hodgons’s Match Loads they don’t include Varget as recommended powder.

Last edited by Jinx-); 09-20-2009 at 01:22 AM. Reason: Fliers, Varget Load
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  #3  
Old 09-20-2009, 08:48 AM
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Re: Thompson center icon issues

Read this article about copper fouling, try to clean it and break in you barrel

RSI - Copper Fouling
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  #4  
Old 09-21-2009, 10:43 PM
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Re: Thompson center icon issues

Some more input would be greatly appreciated.
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  #5  
Old 09-22-2009, 08:35 AM
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Join Date: May 2007
Location: Texas
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Re: Thompson center icon issues

Did you swap scopes and retry the groups?

Does the flier occur as the barrel heats or can it be on cold bore shots?

Is the stock bedded?

Are you sure you are rest in the bags the same each shot?

Do you have chrono data for your shooting?

Try a different bullet and see if you get the same problem. VLD's can be problematic!

Are you putting these in the rifle one at a time or feeding through magazine? If you are feeding through the magazine recoil could be changing OAL. VLD's don't like that.
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  #6  
Old 09-24-2009, 05:49 PM
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Re: Thompson center icon issues

Any new news on this ICON?
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  #7  
Old 09-24-2009, 06:21 PM
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Re: Thompson center icon issues

I guess he is busy getting that copper fouling outů I would recommend to use KG-12 but if its very bad JB can do miracles
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