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Rifles, Reloading, Optics, Equipment
Reloading
Reloader 26 in 6.5 creedmoor
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<blockquote data-quote="codyadams" data-source="post: 1339804" data-attributes="member: 87243"><p>As far as temp stability, I'll quote my post from the "Reloder 26" thread as well. I have heard of people getting good results until temps get over 85ish, then the velocities tend to go up quicker than normal, however, I have not seen this in the two rifles I have loaded in, but I also haven't thoroughly tested at these higher temps. </p><p></p><p>So I did a temperature test, I'll go over how I conducted it. I put 5 rounds in a zip lock bag in my freezer overnight, then on my way to the range I put the rounds in a bucket filled with ice, and put my kestrel inside so I had a temperature I could monitor and record. The other rounds were kept at room temperature in my house, then on my dashboard in my truck on the way to the range. </p><p></p><p>When I got to the range and set up my chronograph, I got my bucket of ice and pulled my kestrel out and looked at the temp, it registered 17° f, but by the time I thought to get my phone out and take a picture, it had warmed up to the 30's, as the ambient temp outside was in the high 60's. After this I put my kestrel in my ammo box with my room temp rounds.</p><p></p><p>First I shot the chilled rounds, pulling them out of the ice one at a time, and I shot them within about 3 seconds of chambering them, and recording velocity. Then after that, I let my barrel cool to room temp, then looked at the temp in my ammo box, which was 67 ° f. Then I shot those 5 rounds, and recorded velocity.</p><p></p><p>This was my load for all rounds fired in my .260 AI:</p><p></p><p>49.1 grains RL-26</p><p>Lapua Brass</p><p>CCI BR-2 primer</p><p>140 Berger VLD Seated .005 off lands</p><p></p><p>And these were my velocity results:</p><p></p><p>17° f -</p><p>1. 3051</p><p>2. 3046</p><p>3. 3056</p><p>4. 3066</p><p>5. 3055 AVG. 3054, E.S. 20 FPS </p><p></p><p>67° f -</p><p>1. 3060</p><p>2. 3059</p><p>3. 3055</p><p>4. 3058</p><p>5. 3063 AVG. 3059, E.S. 8 FPS </p><p></p><p>My lower temp loads would have had a 10 fps e.s. If it wasn't for the one that went 3066, and also would have averaged 3052 instead of 3054. But even at that...The velocity spread for 50° f difference was only 7 fps...so all my worries about temp sensativity are now dismissed, at least for this rifle.</p></blockquote><p></p>
[QUOTE="codyadams, post: 1339804, member: 87243"] As far as temp stability, I'll quote my post from the "Reloder 26" thread as well. I have heard of people getting good results until temps get over 85ish, then the velocities tend to go up quicker than normal, however, I have not seen this in the two rifles I have loaded in, but I also haven't thoroughly tested at these higher temps. So I did a temperature test, I'll go over how I conducted it. I put 5 rounds in a zip lock bag in my freezer overnight, then on my way to the range I put the rounds in a bucket filled with ice, and put my kestrel inside so I had a temperature I could monitor and record. The other rounds were kept at room temperature in my house, then on my dashboard in my truck on the way to the range. When I got to the range and set up my chronograph, I got my bucket of ice and pulled my kestrel out and looked at the temp, it registered 17° f, but by the time I thought to get my phone out and take a picture, it had warmed up to the 30's, as the ambient temp outside was in the high 60's. After this I put my kestrel in my ammo box with my room temp rounds. First I shot the chilled rounds, pulling them out of the ice one at a time, and I shot them within about 3 seconds of chambering them, and recording velocity. Then after that, I let my barrel cool to room temp, then looked at the temp in my ammo box, which was 67 ° f. Then I shot those 5 rounds, and recorded velocity. This was my load for all rounds fired in my .260 AI: 49.1 grains RL-26 Lapua Brass CCI BR-2 primer 140 Berger VLD Seated .005 off lands And these were my velocity results: 17° f - 1. 3051 2. 3046 3. 3056 4. 3066 5. 3055 AVG. 3054, E.S. 20 FPS 67° f - 1. 3060 2. 3059 3. 3055 4. 3058 5. 3063 AVG. 3059, E.S. 8 FPS My lower temp loads would have had a 10 fps e.s. If it wasn't for the one that went 3066, and also would have averaged 3052 instead of 3054. But even at that...The velocity spread for 50° f difference was only 7 fps...so all my worries about temp sensativity are now dismissed, at least for this rifle. [/QUOTE]
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Reloader 26 in 6.5 creedmoor
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