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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
6.5 Grendel Reloaders????
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<blockquote data-quote="MudRunner2005" data-source="post: 1446193" data-attributes="member: 12995"><p>Last night I got bored and did some reading on my reloading labels of Grendel loads I had made back in 2015, but never tried... Something didn't seem quite right as far as my base-to-ogive measurements... So, needless to say, I broke out the calipers & comparator, and then remeasured both the 123 Custom Comps and 130 AR Hybrids in my Grendel (Grendel II chamber) to get definitive measurements for both leade distance (just barely touching the lands), and lands distance (pressed fully into the lands, zero forward movement). Seems with the Grendel II chamber, and the 123 CC's I have about 0.040" of distance available between the leade and the lands (limited by magazine length). And with the 130 AR Hybrids, I have about 0.073" of difference between the 2 numbers (once again, limited by magazine length). So, I just used my leade numbers and ended up jumping both the 123 CC's and 130 AR Hybrids at 0.005". The 123 CC's still have 0.045" before its pressed into the lands, and the 130 AR Hybrids have about .078" of jump before hitting the wall. I think that's more than enough jump even though they're only 0.005" off the leade, being that there's still that much room to play before being "pressed". And they still fit in the C-Products 6.5G magazine.</p><p></p><p>My previous numbers were slightly off...Glad I noticed that and got it rectified, and now written down and documented on a sticky note inside my reloading die's case for future reference. So, that being said, I had to pull and reseat a bunch of bullets last night. But, at least they're all correct now, and I feel alot better about pulling the trigger on them.</p><p></p><p>It appears that properly using the Hornady OAL tool with the modified case gauges in an AR's is a bit different than with a bolt-action...Plus, being that an AR is not as strong as a bolt-action (AL vs. steel), avoiding pressure spikes is much more important. So, with this new measuring method I figured out with the Hornady OAL gauge, I guess I need to go back and remeasure my .300 BLK's chamber as well, just to make sure everything is on the level before shooting my test-loads, as well.</p></blockquote><p></p>
[QUOTE="MudRunner2005, post: 1446193, member: 12995"] Last night I got bored and did some reading on my reloading labels of Grendel loads I had made back in 2015, but never tried... Something didn't seem quite right as far as my base-to-ogive measurements... So, needless to say, I broke out the calipers & comparator, and then remeasured both the 123 Custom Comps and 130 AR Hybrids in my Grendel (Grendel II chamber) to get definitive measurements for both leade distance (just barely touching the lands), and lands distance (pressed fully into the lands, zero forward movement). Seems with the Grendel II chamber, and the 123 CC's I have about 0.040" of distance available between the leade and the lands (limited by magazine length). And with the 130 AR Hybrids, I have about 0.073" of difference between the 2 numbers (once again, limited by magazine length). So, I just used my leade numbers and ended up jumping both the 123 CC's and 130 AR Hybrids at 0.005". The 123 CC's still have 0.045" before its pressed into the lands, and the 130 AR Hybrids have about .078" of jump before hitting the wall. I think that's more than enough jump even though they're only 0.005" off the leade, being that there's still that much room to play before being "pressed". And they still fit in the C-Products 6.5G magazine. My previous numbers were slightly off...Glad I noticed that and got it rectified, and now written down and documented on a sticky note inside my reloading die's case for future reference. So, that being said, I had to pull and reseat a bunch of bullets last night. But, at least they're all correct now, and I feel alot better about pulling the trigger on them. It appears that properly using the Hornady OAL tool with the modified case gauges in an AR's is a bit different than with a bolt-action...Plus, being that an AR is not as strong as a bolt-action (AL vs. steel), avoiding pressure spikes is much more important. So, with this new measuring method I figured out with the Hornady OAL gauge, I guess I need to go back and remeasure my .300 BLK's chamber as well, just to make sure everything is on the level before shooting my test-loads, as well. [/QUOTE]
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AR15/10 Rifles
6.5 Grendel Reloaders????
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