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Hunting
The Basics, Starting Out
Seating and Depth and IMR 4350 really that sensative?
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<blockquote data-quote="ronedog" data-source="post: 996872" data-attributes="member: 21087"><p>I need some help analyzing my shot groups and helping me understand what happened.</p><p></p><p>3 days ago I finished my ladder test and settled in at 57.5g IMR 4350 Here's a pic of my group. Shots #16,#17, #18 with their respective FPS. It was 70degrees outside and this was shot at 57.5g of IMR 4350</p><p><img src="http://www.redsandstech.com/Group3.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>So I thought I'd settle in at 57.5g of powder and then play with seating depth. This morning I went and shot those groups and it was all over the place. The temperature had dropped 11 degrees from the other morning. Here's a pic of the same 57.5g and 2.920 OAL (the first pick was also at 2.920 OAL.</p><p></p><p><img src="http://www.redsandstech.com/Group2.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>What really has me confused is the velocities and how far apart this group was, considering 2 days ago I thought it was right on...either I loaded more powder than the scale said (but I'm very particular about this....using a lee powder scale...maybe this scale is not a good one to use?...it's not broken), or the temperature had a larger affect. Primers, brass, everything was all the same as it was 2 days ago.</p><p></p><p>I shot 6 different 3 shot groups at different OAL to figure out seating depth, and all of them were 4-6 inches at 100YDS...except this one:</p><p></p><p><img src="http://www.redsandstech.com/Group1.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>This is the only group that that was decent, although not as good as 2 days ago. This was shot at 2.943 OAL, which is almost touching the lands. 2.944 is where it touches the lands.</p><p></p><p>I used to load with H4350, but I can't buy it locally anymore, so I went to IMR4350 and have been working my load up with that. I've never shot with IMR, and I'm still quite a newbie at this, is IMR4350 really this temperature sensative, or do I have some other problem? All my shots I felt good at where my aim point was and they were good shots, just all over the place with impact. I'm heading out hunting in 3 weeks and the temperatures in the morning will probably be around 45degrees, then in afternoon climb to 60 degrees...can IMR 4350 handle these temperature swings, or do I need to find some other powder?</p><p></p><p>I'm just not confident that if I load up some bullets at 57.5g and 2.943 OAL, or 2.920 OAL that it will be consistent.</p><p></p><p>I'm shooting a 300WSM Model 70, everything is stock, trigger pull is at 2.5lbs, Vortex Viper 6.5x20x55mm Scope...20MOA picitanny base with custom turret from CustomTurrettSystems.com ... its a hunting rifle, and my primary goal is to use it for hunting and I want to be in the boiler plate up to 800 yds...if my loads can get dialed in for that.</p><p></p><p>I'll take any input from you guys! Thanks.</p></blockquote><p></p>
[QUOTE="ronedog, post: 996872, member: 21087"] I need some help analyzing my shot groups and helping me understand what happened. 3 days ago I finished my ladder test and settled in at 57.5g IMR 4350 Here's a pic of my group. Shots #16,#17, #18 with their respective FPS. It was 70degrees outside and this was shot at 57.5g of IMR 4350 [IMG]http://www.redsandstech.com/Group3.JPG[/IMG] So I thought I'd settle in at 57.5g of powder and then play with seating depth. This morning I went and shot those groups and it was all over the place. The temperature had dropped 11 degrees from the other morning. Here's a pic of the same 57.5g and 2.920 OAL (the first pick was also at 2.920 OAL. [IMG]http://www.redsandstech.com/Group2.JPG[/IMG] What really has me confused is the velocities and how far apart this group was, considering 2 days ago I thought it was right on...either I loaded more powder than the scale said (but I'm very particular about this....using a lee powder scale...maybe this scale is not a good one to use?...it's not broken), or the temperature had a larger affect. Primers, brass, everything was all the same as it was 2 days ago. I shot 6 different 3 shot groups at different OAL to figure out seating depth, and all of them were 4-6 inches at 100YDS...except this one: [IMG]http://www.redsandstech.com/Group1.JPG[/IMG] This is the only group that that was decent, although not as good as 2 days ago. This was shot at 2.943 OAL, which is almost touching the lands. 2.944 is where it touches the lands. I used to load with H4350, but I can't buy it locally anymore, so I went to IMR4350 and have been working my load up with that. I've never shot with IMR, and I'm still quite a newbie at this, is IMR4350 really this temperature sensative, or do I have some other problem? All my shots I felt good at where my aim point was and they were good shots, just all over the place with impact. I'm heading out hunting in 3 weeks and the temperatures in the morning will probably be around 45degrees, then in afternoon climb to 60 degrees...can IMR 4350 handle these temperature swings, or do I need to find some other powder? I'm just not confident that if I load up some bullets at 57.5g and 2.943 OAL, or 2.920 OAL that it will be consistent. I'm shooting a 300WSM Model 70, everything is stock, trigger pull is at 2.5lbs, Vortex Viper 6.5x20x55mm Scope...20MOA picitanny base with custom turret from CustomTurrettSystems.com ... its a hunting rifle, and my primary goal is to use it for hunting and I want to be in the boiler plate up to 800 yds...if my loads can get dialed in for that. I'll take any input from you guys! Thanks. [/QUOTE]
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Seating and Depth and IMR 4350 really that sensative?
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