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Old April 16, 2011, 07:46 AM   #1
Bernie Lomax
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Zero/Patterning question

Hi all,

I have a Mossberg 590A1 with GRS that I'm thinking of getting a mag extension for. When I put the extension on, will my shotty have the same zero and patterns as it does with the stock magazine cap, or do I need to re-zero and re-pattern it?

TIA for any info anyone can give me.
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Old April 16, 2011, 09:46 AM   #2
hogdogs
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Yes it would be the same with the possible exception of harmonics affecting things a tiny bit... But we are talking about a phenomenon reserved for longer range rifle shooting so I doubt any normal fella could tell.

Brent
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Old April 17, 2011, 10:55 AM   #3
Bernie Lomax
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BTT
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Old April 19, 2011, 02:37 PM   #4
imp
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It shouldnt affect the point of impact enough to notice.
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