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Rifles, Reloading, Optics, Equipment
Reloading
Fired Brass Can't be Re-Sized
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<blockquote data-quote="woolecox" data-source="post: 1948234" data-attributes="member: 18551"><p>I just got a factory new AR10 chambered in 7.62 NATO (308Win). My first 7.62 auto loader. I am a reloader. I have been doing it for 30 years now. I have been an active Bench Rest, PRS, and IDPA competitor and, reload for all those disciplines. I also reload all my hunting ammo. So, I am pretty sure I know what I am doing and am confident my equipment is up to and exceeds par.</p><p></p><p>Using a box of new Lapua 308 Win brass I had on hand, I loaded up several "ladders" that consisted of 168SMK, 175SMK, 175VLD-H, and 178ELD-X. All respectable bullets. All were loaded using various weights of Varget power, and GM210M primers. All top shelf components. None of the loads were anywhere near max. In most, at least two full grains short. No over pressure signs.</p><p></p><p>I also shot a couple of factory loads, Hornady Black 168AMAX, and Federal Gold Medal Match. All reloads and factory ammo functioned flawlessly except the factory Fed GMM. It was not powerful enough to strip the next round from the magazine and closed on an empty chamber. "CLICK". The GMM did function flawlessly with the gun suppressed but the groups were terrible. All other groups were near or under 1 MOA for 5 shots. The best was the 178ELD-X that grouped .62" and clocked 2500 fps. It's a 20" barrel.</p><p></p><p><u>To the point</u>: All cases except for the Hornady case will not go through my resizing dies. Even with the Hornady I really had to stand on the lever to get them sized. When I measured the fired cases, all dimensions were around a full .01" larger than factory new. A full hundredth. No way they are going through a die. Yes, I used multiple dies; Redding FL, Redding Type S, Redding Shoulder Bump, Forster FL, and Forster Bushing Bump. Not happening.</p><p></p><p><u><strong>So the question: Can this be anything other than an extremely loose chamber?</strong></u></p><p></p><p>I am going to contact the factory as soon as possible but, that may be impossible with most companies being flat on their butt "due to COVID".</p><p></p><p>Here is one of the better groups. The factory Hornady AMAX did just as well.</p><p>[ATTACH=full]205436[/ATTACH]</p></blockquote><p></p>
[QUOTE="woolecox, post: 1948234, member: 18551"] I just got a factory new AR10 chambered in 7.62 NATO (308Win). My first 7.62 auto loader. I am a reloader. I have been doing it for 30 years now. I have been an active Bench Rest, PRS, and IDPA competitor and, reload for all those disciplines. I also reload all my hunting ammo. So, I am pretty sure I know what I am doing and am confident my equipment is up to and exceeds par. Using a box of new Lapua 308 Win brass I had on hand, I loaded up several "ladders" that consisted of 168SMK, 175SMK, 175VLD-H, and 178ELD-X. All respectable bullets. All were loaded using various weights of Varget power, and GM210M primers. All top shelf components. None of the loads were anywhere near max. In most, at least two full grains short. No over pressure signs. I also shot a couple of factory loads, Hornady Black 168AMAX, and Federal Gold Medal Match. All reloads and factory ammo functioned flawlessly except the factory Fed GMM. It was not powerful enough to strip the next round from the magazine and closed on an empty chamber. "CLICK". The GMM did function flawlessly with the gun suppressed but the groups were terrible. All other groups were near or under 1 MOA for 5 shots. The best was the 178ELD-X that grouped .62" and clocked 2500 fps. It's a 20" barrel. [U]To the point[/U]: All cases except for the Hornady case will not go through my resizing dies. Even with the Hornady I really had to stand on the lever to get them sized. When I measured the fired cases, all dimensions were around a full .01" larger than factory new. A full hundredth. No way they are going through a die. Yes, I used multiple dies; Redding FL, Redding Type S, Redding Shoulder Bump, Forster FL, and Forster Bushing Bump. Not happening. [U][B]So the question: Can this be anything other than an extremely loose chamber?[/B][/U] I am going to contact the factory as soon as possible but, that may be impossible with most companies being flat on their butt "due to COVID". Here is one of the better groups. The factory Hornady AMAX did just as well. [ATTACH type="full" alt="23432858-D01E-499B-870D-527D4EAA7951.png"]205436[/ATTACH] [/QUOTE]
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Fired Brass Can't be Re-Sized
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