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AR-10A4 Rifle Range report
12 years 10 months ago - 12 years 10 months ago #15884
by jtallen83
AR-10A4 Rifle Range report was created by jtallen83
The sun was shining and the wind was light so I thought I'd check the zero on my AR-10A4 basic flat top rifle. As always she made me smile! 
I meant to make this a 5 shot group but either lost count or got two in the same hole. either way I'll take it.
This is 20 rounds in well under 4 minutes. You can see I rushed a few but the rifle did its job for sure!
Both are at 100 yards with a Bushnell 4200 2.5x10 and FN NATO stamped 150 grain ammo, none of that special match stuff. Shot from a bipod off a picnic table.
I have somewhere around 500 rounds through the rifle with not one malfunction. The scope and mount seem to keep a decent zero. You can see from the 20 round group that it is off to the left a bit but the next time I mount the scope it might be on the money so I stopped chasing it and chalked it up to the variable of remounting the scope, close enough for the ranges I shoot at and besides, most of my friends and family can't make targets like this with their bolt guns but they can with my ArmaLite!
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I meant to make this a 5 shot group but either lost count or got two in the same hole. either way I'll take it.
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This is 20 rounds in well under 4 minutes. You can see I rushed a few but the rifle did its job for sure!
Both are at 100 yards with a Bushnell 4200 2.5x10 and FN NATO stamped 150 grain ammo, none of that special match stuff. Shot from a bipod off a picnic table.
I have somewhere around 500 rounds through the rifle with not one malfunction. The scope and mount seem to keep a decent zero. You can see from the 20 round group that it is off to the left a bit but the next time I mount the scope it might be on the money so I stopped chasing it and chalked it up to the variable of remounting the scope, close enough for the ranges I shoot at and besides, most of my friends and family can't make targets like this with their bolt guns but they can with my ArmaLite!
Last edit: 12 years 10 months ago by jtallen83.
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12 years 10 months ago #15900
by jtallen83
I don't remember if it was Radway or FN ammo I used to zero it but I haven't seen much change as long as it has that NATO cross stamp. I expected a little more spread on the 20 shot group as it heated. I realize at a thouand yards it would be considerable but for the mostly under 300 yards I shoot it isn't an issue to me, the coyote is goin down!
So far all the 175 match ammo I've tried opens up the groups. Someday I'll work on handloading the larger bullets to see if there is a sweet spot for them. It's hard to get fired up about the loading when it shoots the cheap stuff like this though!
Replied by jtallen83 on topic AR-10A4 Rifle Range report
I've found the left-right shift happens when I re-set the scope. It seems to stay under an inch at 100 yards, if I adjust it to center then the next time I mount it is off that much the other way.LebbenB wrote:
Not really. 20 rounds in less than 4 minutes with a standard A4 flattop off a bipod. That looks pretty typical. Vertical stringing is due to the barrel heating up and (probably) loading the bipod.Nice group, there is vertical spread there. Something is going on.
As for the POI change, part of it is probably from dismounting and remounting the scope. Most of it is from using a different type/weight of ammo than what you zeroed it with, I'd guess.
Great looking group, brother!
I don't remember if it was Radway or FN ammo I used to zero it but I haven't seen much change as long as it has that NATO cross stamp. I expected a little more spread on the 20 shot group as it heated. I realize at a thouand yards it would be considerable but for the mostly under 300 yards I shoot it isn't an issue to me, the coyote is goin down!
So far all the 175 match ammo I've tried opens up the groups. Someday I'll work on handloading the larger bullets to see if there is a sweet spot for them. It's hard to get fired up about the loading when it shoots the cheap stuff like this though!
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