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Lost accuracy in a 17HMR?

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Unread 12-05-2007, 11:34 PM
Silver Member
Join Date: Jul 2007
Location: Lansing, MI
Posts: 197
Lost accuracy in a 17HMR?

I was one of the lucky ones who got one of the first Marlin 17V's when they first came out. It's been a few years and a couple of thousands of rounds later, but the accuracy has really been dropping off lately. It started off being a .75 MOA gun at 100 yards, but now it's closer to 3-4 MOA. Now I'm trying to figure out what to do to get the groups back down. The muzzle looks decent, but I might have it re-crowned to see if it helps. If that doesn't help I'm out of ideas. Do I sell it and put the funds towards a newer 17? Should I try contacting Marlin to see if they would re-barrel it? What would you do with a gun that looses it's accuracy? TIA.
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Unread 12-06-2007, 11:10 AM
Platinum Member
Join Date: May 2001
Location: Windham, CT - in Moo-Cow country
Posts: 1,033
Have you throughly cleaned it... I mean REALLY cleaned it.

Many 17 HMR shooters treat them like 22 rimfires, and the cleaning is almost non-existant.

But these little puppies do copper foul, and it doesn't come out with a lick and a promise.

Use wet patches with copper solvent - don't use brushes.

Keep wet patching, with 30 minutes between them to soak, until the patches come out white.

I doubt that Marlin will re-barrel it, the cost would be as much as a new rifle.

Also... do the regular checks - make sure the scope is tight, stock screws are tight, etc...

Spring has sprung, da' creek has riz, I wonder where dem kitties is? Here, kitty kitty kitty.

LRH member #23

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Unread 12-08-2007, 04:59 PM
Silver Member
Join Date: Nov 2006
Posts: 257
+1 on Catshooter

Clean Clean and Clean again.
Vegetarian is an old Indian word for lousy hunter!
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Unread 12-09-2007, 01:53 PM
Bronze Member
Join Date: Sep 2005
Location: Oracle, Az
Posts: 73
My 17VSS needs a liberal dose of Sweets 7.62 every now and then to bring it back to snuff.
NRA Life
Arizona Desert Bighorn Sheep Society
Arizona Antelope Foundation
Arizona Wildlife Foundation
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Unread 12-29-2007, 05:10 PM
Platinum Member
Join Date: Jan 2005
Location: Pocahontas, AR
Posts: 1,072
I have discovered the same thing as Catshooter is saying.
You will not make peace with the Blue Coats, you are free to go.
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Unread 12-29-2007, 06:21 PM
Bronze Member
Join Date: Jan 2004
Location: Australia
Posts: 46
17HMR Cleaning

I hired a 17HMR in NZ for rabbit shooting earlier this year.
When we received it the barrel looked like a smooth bore.
It took several hours to remove the fouling and see rifleing again.
About every 100- 200 rounds it required thorough cleaning and accuracy returned. We poked 1100 rounds down at rabbits and were very surprised at the overall performance of this little round acuracywise and quite lethal.
happy trails and dry powder
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Unread 12-30-2008, 10:16 AM
Gold Member
Join Date: Sep 2008
Location: Republic of NJ
Posts: 978
Re: Lost accuracy in a 17HMR?

Gunslick foaming bore cleaner, the answer to all copper fouling and cleaning problems.
Red mist. It's an addiction!
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