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Rifles, Reloading, Optics, Equipment
Reloading
RAMSHOT LRT POWDER
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<blockquote data-quote="Veteran" data-source="post: 2268134" data-attributes="member: 118038"><p> <table style='width: 100%'><tr><td>RL 33</td><td><div style="text-align: right">0.267</div> </td></tr><tr><td>US869</td><td><div style="text-align: right">0.2735</div> </td></tr><tr><td>N570</td><td><div style="text-align: right">0.277</div> </td></tr><tr><td>RSLRT</td><td><div style="text-align: right">0.285</div> </td></tr><tr><td>IMR 8133</td><td><div style="text-align: right">0.3</div> </td></tr><tr><td>N565</td><td><div style="text-align: right">0.319</div> </td></tr><tr><td>ACC MagPro</td><td><div style="text-align: right">0.3342</div> </td></tr><tr><td>RETUMBO</td><td><div style="text-align: right">0.337</div> </td></tr><tr><td>RL26</td><td><div style="text-align: right">0.3397</div> </td></tr><tr><td>RSMag</td><td><div style="text-align: right">0.345</div> </td></tr><tr><td>H1000</td><td><div style="text-align: right">0.366</div> </td></tr></table><p></p><p></p><p>Above I have posted what Ramshot LRT looks like relative to other popular slow burning powders on a numbers basis</p><p>H1000 being the Fastest and RL 33 being the Slowest. In this thread several pages above, Steve from Hammer bullets says in their experience that he would say LRT is somewhere between US869 and RL-33. Its supposed to be a little faster by the numbers, but</p><p>batch to batch it could be as Steve said. </p><p></p><p>I have 3 rules I hate to break.....1) If it aint Broke Don't Fix IT 2) Whatever works works. 3) Stay Safe</p><p></p><p>I have to ask at 90.5 grains LRT are you shooting a compressed load already in your cases? It has to be pretty close. And you are already at 3,255 fps velocity. Your top 5-6 velocity powders for this bullet in this caliber by modeling are in order </p><p></p><p>N570</p><p>RE 33</p><p>Retumbo</p><p>RS LRT</p><p>N568 </p><p>IMR 8133</p><p></p><p></p><p>They all have a little NEAR MAX warning on them.</p><p></p><p>Even with a 26 inch barrel its only giving about 3116 velocity prediction using the 168 Gr. LRX. </p><p></p><p>The most shown in my models for a 26 inch barrel is about 3244 for 150 gr. Scenars. using N570.</p><p></p><p>So you may be already close to 60,000-65000 psi. ?</p><p></p><p>I was a little fuzzy on whether you said you were shooting the 150 gr, or the 168 gr bullets with LRT getting 3255. It sounded like </p><p>in the end you ended up using the 168s again and they were being shot at 3255?</p><p></p><p>If so, I would be very very cautious about increasing that load any. Ideally I would be personally more comfortable shooting the 150 gr. bullet with 90.5 gr LRT or else maybe dropping velocity to 3100's with the 168 gr. bullet and a lower charge.</p><p></p><p>Whatever you decide to do on your loads with bullets and charge weights, I'd just find what works best with a zero setting on your barrel tuner with your new muzzle brake on the rifle, ie, the whole new setup, and then at the end use the tuner to tighten up the groups from there.</p><p></p><p>Also, if you ever changed LOTS of LRT, ie next jug, and got a hotter one---they can vary by 10% on burn rate--- and if you are already on the ragged edge of MAX LOAD, and its compressed, etc. you could then easily exceed MAX PRESS and hurt yourself. Stay Safe.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2268134, member: 118038"] [TABLE] [TR] [TD]RL 33[/TD] [TD][RIGHT]0.267[/RIGHT][/TD] [/TR] [TR] [TD]US869[/TD] [TD][RIGHT]0.2735[/RIGHT][/TD] [/TR] [TR] [TD]N570[/TD] [TD][RIGHT]0.277[/RIGHT][/TD] [/TR] [TR] [TD]RSLRT[/TD] [TD][RIGHT]0.285[/RIGHT][/TD] [/TR] [TR] [TD]IMR 8133[/TD] [TD][RIGHT]0.3[/RIGHT][/TD] [/TR] [TR] [TD]N565[/TD] [TD][RIGHT]0.319[/RIGHT][/TD] [/TR] [TR] [TD]ACC MagPro[/TD] [TD][RIGHT]0.3342[/RIGHT][/TD] [/TR] [TR] [TD]RETUMBO[/TD] [TD][RIGHT]0.337[/RIGHT][/TD] [/TR] [TR] [TD]RL26[/TD] [TD][RIGHT]0.3397[/RIGHT][/TD] [/TR] [TR] [TD]RSMag[/TD] [TD][RIGHT]0.345[/RIGHT][/TD] [/TR] [TR] [TD]H1000[/TD] [TD][RIGHT]0.366[/RIGHT][/TD] [/TR] [/TABLE] Above I have posted what Ramshot LRT looks like relative to other popular slow burning powders on a numbers basis H1000 being the Fastest and RL 33 being the Slowest. In this thread several pages above, Steve from Hammer bullets says in their experience that he would say LRT is somewhere between US869 and RL-33. Its supposed to be a little faster by the numbers, but batch to batch it could be as Steve said. I have 3 rules I hate to break.....1) If it aint Broke Don't Fix IT 2) Whatever works works. 3) Stay Safe I have to ask at 90.5 grains LRT are you shooting a compressed load already in your cases? It has to be pretty close. And you are already at 3,255 fps velocity. Your top 5-6 velocity powders for this bullet in this caliber by modeling are in order N570 RE 33 Retumbo RS LRT N568 IMR 8133 They all have a little NEAR MAX warning on them. Even with a 26 inch barrel its only giving about 3116 velocity prediction using the 168 Gr. LRX. The most shown in my models for a 26 inch barrel is about 3244 for 150 gr. Scenars. using N570. So you may be already close to 60,000-65000 psi. ? I was a little fuzzy on whether you said you were shooting the 150 gr, or the 168 gr bullets with LRT getting 3255. It sounded like in the end you ended up using the 168s again and they were being shot at 3255? If so, I would be very very cautious about increasing that load any. Ideally I would be personally more comfortable shooting the 150 gr. bullet with 90.5 gr LRT or else maybe dropping velocity to 3100's with the 168 gr. bullet and a lower charge. Whatever you decide to do on your loads with bullets and charge weights, I'd just find what works best with a zero setting on your barrel tuner with your new muzzle brake on the rifle, ie, the whole new setup, and then at the end use the tuner to tighten up the groups from there. Also, if you ever changed LOTS of LRT, ie next jug, and got a hotter one---they can vary by 10% on burn rate--- and if you are already on the ragged edge of MAX LOAD, and its compressed, etc. you could then easily exceed MAX PRESS and hurt yourself. Stay Safe. [/QUOTE]
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