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Long Range Hunting & Shooting
6.5 grendal
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<blockquote data-quote="CaptnC" data-source="post: 1599639" data-attributes="member: 101755"><p>IMO...you should start with your chronograph. I'm new to reloading for a gas gun. Been loading for bolt guns for a very long time.</p><p></p><p>Why start with the chronograph? The AR platform is very easy to go over pressure well before the brass shows signs of pressure.</p><p></p><p>So I try to get my velocities as close to book velocity, especially if the book list pressure of that load. </p><p></p><p>The 123 SST is apparently a tough one to get shoot good. I burned nearly one pound of 8208 before finding what I wanted for my 18" barrel. My 20" likes the bullets and shoots them well.</p><p></p><p>H335 was a piece of cake to get the SST to shoot good with low SD and ES without over pressuring the platform. So far the H335 has done very good with several bullets.</p><p></p><p>Just put together a 24" SS heavy barrel with a side charge upper. [ATTACH=full]127197[/ATTACH]</p><p>Still waiting on the gas block and tube. Need a brake too.</p><p></p><p>Oh...if you noticed something bridging the top of the HG and upper...I use something to hold the two rails together while I snug down the front Hand Guards, that way the two are perfectly aligned.</p></blockquote><p></p>
[QUOTE="CaptnC, post: 1599639, member: 101755"] IMO...you should start with your chronograph. I'm new to reloading for a gas gun. Been loading for bolt guns for a very long time. Why start with the chronograph? The AR platform is very easy to go over pressure well before the brass shows signs of pressure. So I try to get my velocities as close to book velocity, especially if the book list pressure of that load. The 123 SST is apparently a tough one to get shoot good. I burned nearly one pound of 8208 before finding what I wanted for my 18" barrel. My 20" likes the bullets and shoots them well. H335 was a piece of cake to get the SST to shoot good with low SD and ES without over pressuring the platform. So far the H335 has done very good with several bullets. Just put together a 24" SS heavy barrel with a side charge upper. [ATTACH=full]127197[/ATTACH] Still waiting on the gas block and tube. Need a brake too. Oh...if you noticed something bridging the top of the HG and upper...I use something to hold the two rails together while I snug down the front Hand Guards, that way the two are perfectly aligned. [/QUOTE]
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