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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
6.5 Grendel AR-15 vs 7.62 NATO AR-10/SR25/GII/...
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<blockquote data-quote="bruce_ventura" data-source="post: 1083364" data-attributes="member: 34084"><p>This question goes out to folks who have owned and shot both types of rifles. </p><p></p><p>I have a project coming up where I need a semi-auto rifle with low dispersion (<.75 MOA for a 5-shot group at 100 yds). I need the ballistics of the 7.62 NATO M118-LR cartridge, and a max range of at least 1,000 yds at sea level. I have multiple AR-15 rifles, but no AR-10/SR25/GII/... rifles. </p><p></p><p>I started to look at rifle prices and asked myself if I could get the same drop and wind drift in an AR-15 platform. I was a bit surprised to see that the 6.5 Grendel with a 123 gr Scenar has nearly the same ballistics (not including bullet energy) as the 7.62 NATO 175 gr M118-LR round. It's really wind drift that I'm trying to match, not bullet drop. I could save more than a few bucks by buying or building a 6.5 Grendel upper for this project instead of buying a new 7.62 NATO rifle. </p><p></p><p>My question is, am I missing something here? Is there a good reason, either for ballistics or rifle function, reliability, accuracy, etc., to use an AR-10/SR25/GII/... rifle instead of a. 6.5 Grendel? Again bullet energy is not an issue - I am essentially punching paper in this project.</p></blockquote><p></p>
[QUOTE="bruce_ventura, post: 1083364, member: 34084"] This question goes out to folks who have owned and shot both types of rifles. I have a project coming up where I need a semi-auto rifle with low dispersion (<.75 MOA for a 5-shot group at 100 yds). I need the ballistics of the 7.62 NATO M118-LR cartridge, and a max range of at least 1,000 yds at sea level. I have multiple AR-15 rifles, but no AR-10/SR25/GII/... rifles. I started to look at rifle prices and asked myself if I could get the same drop and wind drift in an AR-15 platform. I was a bit surprised to see that the 6.5 Grendel with a 123 gr Scenar has nearly the same ballistics (not including bullet energy) as the 7.62 NATO 175 gr M118-LR round. It's really wind drift that I'm trying to match, not bullet drop. I could save more than a few bucks by buying or building a 6.5 Grendel upper for this project instead of buying a new 7.62 NATO rifle. My question is, am I missing something here? Is there a good reason, either for ballistics or rifle function, reliability, accuracy, etc., to use an AR-10/SR25/GII/... rifle instead of a. 6.5 Grendel? Again bullet energy is not an issue - I am essentially punching paper in this project. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
6.5 Grendel AR-15 vs 7.62 NATO AR-10/SR25/GII/...
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