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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
.250" Groups - Is it possible?
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<blockquote data-quote="Greyfox" data-source="post: 526744" data-attributes="member: 10291"><p>I have shot several 5 shot quarter inch groups at 100 yards with two of my uppers. Every time ,no, but pretty consistent over the long haul. I use these for 200 and 300 yard egg shoots. They compete well with the bolt rifles.</p><p></p><p>I use the same lower for both of these uppers. Colt with a Rock River Match Trigger with a JP spring kit set at 3.5#. Everything else is stock except for lead weighted A2 stock. Have to make sure there is NO play between upper and lower. I like to use a modified red plastic wedge that's available from Brownels. I drill a 1/8 hole through the base and cut a S&W rebound coil spring 5 coils and stick it in the center. The plain plastic fatigues over time. The spring keeps it tight.</p><p></p><p>Upper one: DPMS 24" heavy stainless 223, 1:9 twist. Lapua brass, CCI BR primer, 25gr Varget, 69gr. Sierra BT Match bullet. FL RCBS X Dye. Nightforce NXS 8x22</p><p></p><p>Upper two: Whitely 6mmAR. 24" heavy Hart Barrel, DPMS heavy walled receiver. 1:8 twist. Lapua 6.5 Grendel necked necked down to 6mm, CCIBR primer, 28.2gr R-15. Sierra 107gr Match bullet. Custom Redding FL Dye and seated. 8x32 Nightforce Benchrest.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 526744, member: 10291"] I have shot several 5 shot quarter inch groups at 100 yards with two of my uppers. Every time ,no, but pretty consistent over the long haul. I use these for 200 and 300 yard egg shoots. They compete well with the bolt rifles. I use the same lower for both of these uppers. Colt with a Rock River Match Trigger with a JP spring kit set at 3.5#. Everything else is stock except for lead weighted A2 stock. Have to make sure there is NO play between upper and lower. I like to use a modified red plastic wedge that's available from Brownels. I drill a 1/8 hole through the base and cut a S&W rebound coil spring 5 coils and stick it in the center. The plain plastic fatigues over time. The spring keeps it tight. Upper one: DPMS 24" heavy stainless 223, 1:9 twist. Lapua brass, CCI BR primer, 25gr Varget, 69gr. Sierra BT Match bullet. FL RCBS X Dye. Nightforce NXS 8x22 Upper two: Whitely 6mmAR. 24" heavy Hart Barrel, DPMS heavy walled receiver. 1:8 twist. Lapua 6.5 Grendel necked necked down to 6mm, CCIBR primer, 28.2gr R-15. Sierra 107gr Match bullet. Custom Redding FL Dye and seated. 8x32 Nightforce Benchrest. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
.250" Groups - Is it possible?
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