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Max Online: 16728 @ 03/25/12 08:51 AM
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#6024295 - 11/11/15 07:16 PM Range trip diagnosis
Brother in-law Online   content
THF Celebrity

Registered: 07/08/07
Posts: 24456
I'm just going to list the facts

- normal is dime size groups for the rifle to big bug hole
- overall round count is probably around 250 or less , never cleaned
- using a CDS dial, I'm now shooting 1/4" high (not a big deal to me)
- I shot at an indoor range
- I would have one perfect bull then two mostly high left, then I would go back to bull
- all said and done I'm probably 3/4" groups at 100. ( fine to kill a deer, but not tight as normal)
- I took a decent amount of time between shot so barrel didn't heat up

Is it me? Barrel needs to be clean? Need to tweak loads?

Will it rise 1/4 when the barrel gets seasoned and faster?

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#6024350 - 11/11/15 07:45 PM Re: Range trip diagnosis [Re: Brother in-law]
300_WizzM Offline
Woodsman

Registered: 03/15/14
Posts: 243
Loc: Grand Saline, TX
Could be a couple of the things you listed.
1. Mine needs to be cleaned about every 200 rounds.
2. Yes the barrel will sometimes speed up when broken in. Mine sped up about 20fps.

What I would do is clean and shoot again. If it tightens up that was it. If not keep eliminating variables one at a time till I figure it out.

Also check stock bolts and scope screws just to make sure all are properly torqued.

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#6024380 - 11/11/15 07:56 PM Re: Range trip diagnosis [Re: Brother in-law]
scalebuster Online   content
Pro Tracker

Registered: 11/25/10
Posts: 1875
Clean it

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#6024389 - 11/11/15 07:59 PM Re: Range trip diagnosis [Re: Brother in-law]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
6mm or 6.5mm ? Either can speed up around that round count.

Clean it and reshoot. I bet it tightens up after it has been refouled. And I bet you will need a new zero.
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#6024396 - 11/11/15 08:01 PM Re: Range trip diagnosis [Re: Brother in-law]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
End the cleaning with dry parches until no discoloration is on the patch.
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#6024403 - 11/11/15 08:02 PM Re: Range trip diagnosis [Re: Brother in-law]
GLC Offline


Registered: 02/25/09
Posts: 4109
Loc: Burleson Texas
Here is my story, for the last Hunting Challenge I had my 7mm08 shooting great .25 moa so I was going to do fantastic. Weekend before I went out I changed from a two piece scope base to a one piece. I thought it really messed up the harmonics with my barrel because I was experiencing what you list above. Come to find out my barrel finally got to the point that it needed a cleaning, about 300 rounds. I cleaned the barrel and within 10 shots it was back to normal with groups of .25 to .375 moa consistently. Of course I did not figure it out until after the competition. LOL
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#6024419 - 11/11/15 08:08 PM Re: Range trip diagnosis [Re: Brother in-law]
cmorsch Offline
Pro Tracker

Registered: 08/16/11
Posts: 1484
Loc: Midlothian, TX
Im betting that you need to deep clean the barrel as you have gotten past the sweet spot in copper fouling.

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#6024469 - 11/11/15 08:30 PM Re: Range trip diagnosis [Re: FiremanJG]
Brother in-law Online   content
THF Celebrity

Registered: 07/08/07
Posts: 24456
Originally Posted By: FiremanJG
6mm or 6.5mm ? Either can speed up around that round count.

Clean it and reshoot. I bet it tightens up after it has been refouled. And I bet you will need a new zero.


6.5 , I still haven't got the 6mm back

Everything is pretty tight but of course I'll check. I don't have time to clean and get to a range again before next week.

I was guessing a cleaning is due but I didn't know if the items I listed suggested something else. The groups don't suck enough I can't hunt it

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#6024483 - 11/11/15 08:35 PM Re: Range trip diagnosis [Re: Brother in-law]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Leve it alone to hunt. Once you clean it, it will need to be re-fouled, and zero checked.

Hunt with it until you have time to go through the process. When are you going hunting? I could shoot it in the next few days?
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#6024493 - 11/11/15 08:39 PM Re: Range trip diagnosis [Re: FiremanJG]
Brother in-law Online   content
THF Celebrity

Registered: 07/08/07
Posts: 24456
Next Friday. I could probably get it to you if you want to Richard with it. What's your schedule

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#6024989 - 11/12/15 07:59 AM Re: Range trip diagnosis [Re: Brother in-law]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
On duty Friday. Have off all week from this coming Saturday on. I roll right through McKinney on the way home from the station.
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#6025107 - 11/12/15 08:48 AM Re: Range trip diagnosis [Re: Brother in-law]
ChadTRG42 Offline
THF Trophy Hunter

Registered: 09/16/09
Posts: 9393
Loc: Lewisville, TX
I've always said, clean it when accuracy falls off. You may have found that point. My previous 260 would go about 150 rounds before I noticed accuracy fall off.
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#6025414 - 11/12/15 10:34 AM Re: Range trip diagnosis [Re: ChadTRG42]
Buzzsaw Offline
THF Trophy Hunter

Registered: 06/29/11
Posts: 5023
Loc: Frisco, Texas
Originally Posted By: ChadTRG42
I've always said, clean it when accuracy falls off. You may have found that point. My previous 260 would go about 150 rounds before I noticed accuracy fall off.


this
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