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Author Topic: T7 Range Time  (Read 1395 times)
MarkB
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« Reply #20 on: October 03, 2019, 11:26:12 AM »

Primary Arms received my returned scope on Tuesday.  PA determined that the scope was unrepairable.  The scope was out of warranty by about 6 weeks.  My model of the scope is a discontinued version.  PA said they will replace it with a new scope.  The new scope will ship today or early tomorrow.  This will give me a new, upgraded scope with a lifetime warranty.  Primary Arms is a quality company.

Edit: USPS says Saturday for delivery.
« Last Edit: October 03, 2019, 10:59:39 PM by MarkB » Logged
thehun
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« Reply #21 on: October 04, 2019, 02:06:15 PM »

PA is awesome!
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MarkB
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« Reply #22 on: October 05, 2019, 03:46:46 PM »

I received the replacement scope today.  PA sent me the same model scope as I returned.  It is a 1-6X with the ACSS reticle.  This is a good scope and it has a true 1X so I can use both eyes at 1X magnification.  I'll mount the scope on the T7 and try to get to the range soon.  It'll be good to have a working scope for the T7.  I sent the scope on a Thursday and PA received it last Tuesday, determined that the scope couldn't be repaired and shipped the replacement scope out on Wednesday and I received the scope today.
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MarkB
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« Reply #23 on: October 07, 2019, 10:49:20 PM »

Did some calculating (well, the ShootersCalculator.com did).  The replacement Primary Arms 1-6X ACSS scope I received says to sight in the M80 NATO round to hit 1" high at 100 yards for the ACSS sight scale to be accurate.  Using the ShootersCalculator, a G7 BC of 0.200, 2.700 fps muzzle velocity  and the height above bore of 3.75" for my setup, a POI of +1" at 100 yards corresponds to a 200 yard zero, -7.73" at 300 yards and -87.32" at 600 yards.  A 1.75" group at 100 yards equals 5.25" at 300 yards and 10.5" at 600 yards with perfect trajectory and no wind (good luck with that).

That means that a +1" POI at 100yards is a pretty good battle zero to 275 yards (-5.09" POI).

Numbers can be fun.
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