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The Range
Ammo & Reloading
Neck sizing and shooting
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<blockquote data-quote="swampratt" data-source="post: 3600734" data-attributes="member: 15054"><p>Something I noticed a couple weeks ago when I was shooting was chamber temp.</p><p>I placed a round in my chamber and lined up on target and was about to let it fly and my target fell over.</p><p></p><p>I cycled the bolt and removed the round so i could go down range and stand my target back up.</p><p>I was shooting by myself on private land with NO one around and do not know why I removed the round.</p><p></p><p>The round was pretty warm in my hand.</p><p></p><p>The barrel was not that hot but I guess the chamber was.</p><p></p><p>This got me to thinking.</p><p>This round was in the chamber long enough to get on target and almost let it fly and then removed.</p><p></p><p>Case fill on my Varget loads with the 168A max is not very full and well below the bottom of the neck.</p><p>Case fill on my 155 load with 4064 powder is almost right at the base of the neck.</p><p></p><p>Could it be the heating of the case in the chamber makes my last 2 shots with the Varget go to fliers.</p><p>Every time I go out shooting that 42.6 gr load or less I can stick 3 touching or really close to each other and then the last 2</p><p>always blow the group.</p><p></p><p>Yes I could allow 10 minutes cool down between shots.</p><p></p><p>I will continue this test but I will up the Varget charge a bit and see what happens.</p><p></p><p>Loads discussed here are safe in my rifle consult a loading manual for loads for your rifle.</p><p></p><p>Last Note: Case length is now 2.023" another .005" of growth.</p><p></p><p>17 times fired so far.</p></blockquote><p></p>
[QUOTE="swampratt, post: 3600734, member: 15054"] Something I noticed a couple weeks ago when I was shooting was chamber temp. I placed a round in my chamber and lined up on target and was about to let it fly and my target fell over. I cycled the bolt and removed the round so i could go down range and stand my target back up. I was shooting by myself on private land with NO one around and do not know why I removed the round. The round was pretty warm in my hand. The barrel was not that hot but I guess the chamber was. This got me to thinking. This round was in the chamber long enough to get on target and almost let it fly and then removed. Case fill on my Varget loads with the 168A max is not very full and well below the bottom of the neck. Case fill on my 155 load with 4064 powder is almost right at the base of the neck. Could it be the heating of the case in the chamber makes my last 2 shots with the Varget go to fliers. Every time I go out shooting that 42.6 gr load or less I can stick 3 touching or really close to each other and then the last 2 always blow the group. Yes I could allow 10 minutes cool down between shots. I will continue this test but I will up the Varget charge a bit and see what happens. Loads discussed here are safe in my rifle consult a loading manual for loads for your rifle. Last Note: Case length is now 2.023" another .005" of growth. 17 times fired so far. [/QUOTE]
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