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Lost zero after 90 shots--normal? |
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proimion
Optics GrassHopper Joined: June/21/2012 Location: CO Status: Offline Points: 9 |
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Posted: July/11/2012 at 00:16 |
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Just bought a SS 1-4x24. I like it but it has already lost zero on me after 90 rounds. Is this normal? Did I do something wrong? Here's the story:
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proimion
Optics GrassHopper Joined: June/21/2012 Location: CO Status: Offline Points: 9 |
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Sorry--forgot to add it is a new scope.
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supertool73
Optics God Superstool Joined: January/03/2008 Status: Offline Points: 11814 |
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How much torque did u put on the ring caps?
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Lifetime warranty and excellent customer service don't mean a thing when your gun fails during a zombie attack.
"A Liberal is a person who will give away everything they don't own." |
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jonoMT
Optics Master Extraordinaire Joined: November/13/2008 Location: Montana Status: Offline Points: 4853 |
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over-torqued rings? Too tight can also be bad...affecting scope internals.
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Reaction time is a factor...
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SVT_Tactical
MODERATOR Chief Sackscratch Joined: December/17/2009 Location: NorthCackalacky Status: Offline Points: 31233 |
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Sounds to me like a mount issue, what are you using to confirm proper torque on the rings?
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"Most folks are about as happy as they make their minds up to be" - Abraham Lincoln
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Marine24
Optics Journeyman Joined: June/07/2010 Location: Monument, CO Status: Offline Points: 687 |
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Had similar issue with a Viper PST 1-4x scope also in a PEPR mount. Use the poor man's torque method of tightening the screws with the supplied allen wrench. Groups were inconsistent despite using exactly the same ammo/lot.
Problem disappeared once I used a torque driver to get the proper specs on the rings (18 in/lbs) and base (65 in/lbs).
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Chris Farris II
TEAM SWFA - Admin MODERATOR Joined: August/13/2007 Location: United States Status: Offline Points: 3196 |
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Due to the internal mechanics of a scope it is very highly unlikely that the scope would cause you to miss left. It would be more erratic than just shooting left if the scope was damaged or broke. I would say go back and check the mount and set it to all of the proper torque settings and I would be willing to bet the issue will be solved.
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One day your life will flash before your eyes; Make sure it's worth watching.
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proimion
Optics GrassHopper Joined: June/21/2012 Location: CO Status: Offline Points: 9 |
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Like Marine24, I used the included allen wrench, so I can't say how much torque is on the rings. I'll get me a proper tool and report back on what happens.
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supertool73
Optics God Superstool Joined: January/03/2008 Status: Offline Points: 11814 |
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It should only be 15 in-lbs. That is very little torque. You can easily do that much with a screwdriver based tool and your thumb and index finger.
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Lifetime warranty and excellent customer service don't mean a thing when your gun fails during a zombie attack.
"A Liberal is a person who will give away everything they don't own." |
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RotoReuter_DM
Optics Apprentice Joined: December/09/2011 Location: WI Status: Offline Points: 296 |
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Did you use some loctite?
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Old Mil ftw
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Urimaginaryfrnd
MODERATOR Resident Redneck Joined: June/20/2005 Location: Iowa Status: Offline Points: 14964 |
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I think the mount is the most likely suspect. I prefer the La Rue mount but the BOBRO or Badger Ordnance and the Aadland are also a very strong mounts.
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"Always do the right thing, just because it is the right thing to do". Bobby Paul Doherty Texas Ranger |
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castlebravo
Optics Apprentice Joined: October/13/2010 Status: Offline Points: 54 |
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For the uninformed what constitutes a proper tool here? |
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Rancid Coolaid
MODERATOR Joined: January/19/2005 Location: United States Status: Offline Points: 9318 |
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The proper tool is a wrench that sets exact torque, there are many options. The "short arm vs long arm" method assums many things - and can result in significant deviation from spec torques.
I have the ame scope on an 11" upper, never a problem. I am a fan of AD and Aadmount mounts. Many assume that simialr design for less money is a win-win, but sometims more expensive mounts are more expensive for a reason. ** i am NOT recommending a new mount as a first step, many run that mount with success. Start with the cheapest, easiest fix, go from there. |
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Marine24
Optics Journeyman Joined: June/07/2010 Location: Monument, CO Status: Offline Points: 687 |
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Like Rancid said, a torque wrench that can set torque in inch/lbs is what you need for mounting scope bases, rings, tightening action screws and a number of other maintenance tasks. These are valuable tools even for routine maintenance on your weapon
This is different from the one I use on my 65 Impala with sets torque in foot/lbs. Lot of different options ranging from traditional long handle torque wrenches, preset torque drivers, torque screw drivers...etc. I have a Weaver gunsmithing torque wrench plus a conventional bar style torque wrench.
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castlebravo
Optics Apprentice Joined: October/13/2010 Status: Offline Points: 54 |
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Any specific tool recommendations? |
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Chris Farris II
TEAM SWFA - Admin MODERATOR Joined: August/13/2007 Location: United States Status: Offline Points: 3196 |
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One day your life will flash before your eyes; Make sure it's worth watching.
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Sparky
Optics Master Extraordinaire Joined: July/15/2007 Location: SD Status: Offline Points: 4569 |
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A good choice. |
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billyburl2
Optics Master Extraordinaire Joined: January/08/2009 Location: Cottonwood, AZ Status: Offline Points: 4015 |
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http://swfa.com/Borka-Tools-MG3-Multi-Torque-Driver-Kit-P51012.aspx
This is a much better tool than the wheeler.
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If it is tourist season, why can't we shoot them?
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Alan Robertson
Optics Master Joined: October/31/2009 Location: Oklahoma Status: Offline Points: 1763 |
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These work really well and accept any 1/4"bit. Usually inexpensive on auction sites.
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"Garg'n uair dhuisgear"
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proimion
Optics GrassHopper Joined: June/21/2012 Location: CO Status: Offline Points: 9 |
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Here's an update from the OP. I got a Wheeler FAT wrench and remounted the scope using 15 in/lb of torque on the rings. I hope to get a chance to get back out to the range soon and see what happens.
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