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Rifles, Reloading, Optics, Equipment
Reloading
RL-33 6mm-284
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<blockquote data-quote="AZShooter" data-source="post: 1221289" data-attributes="member: 5219"><p>I posted this once before. </p><p></p><p>I had a 28" barrel Bartlein 5R chambered for 6mm-284. I made the mistake of trying all sorts of bullets and powders. It didn't take long to severely scorch the insides of the barrel. By the time I got to trying the new RL-33 the barrel's throat and rifling were altered BUT it still shot. </p><p></p><p>Some background:</p><p></p><p> Seating depth is set so loaded ammo would fit and feed from a Wyatt's mag box in a SA Remington. Jump to lands .065".</p><p></p><p>Previous accuracy load was 58 gr of Retumbo with velocity of 3307 fps </p><p>At this point I had 890 rounds through the barrel!</p><p>-------------------------------------------------------------------------------</p><p></p><p></p><p>RL-33 shows on the scene:</p><p></p><p>Using same seating depth and other components I worked up some loads. </p><p></p><p>62.5 gr 3376</p><p>63 gr 3414</p><p>63.5 gr 3453</p><p>64 gr 3484 most accurate load requires a drop tube to get the powder to fit</p><p>64.5 gr some pressure signs</p><p></p><p>I used the 64 gr load with RL-33 to shoot a coues wt at 525 yds four years ago using the 105 berger. That buck wasn't huge and the bullet killed just fine.</p><p></p><p>WARNING. Another guy on LRH tried to work up to 64 and got pressure far earlier than my rifle. By now the rifling is severely worn with 928 rounds through it, which reduces pressure plus I was jumping the bullet. </p><p></p><p>I continued with the 64 gr load to round count 1040. At this point the barrel would shoot fine for perhaps 8 rounds then the group size would open up. Bore scope view showed a horror show of cracks/crazing plus long fissure like cracks running longitudinally with bore. It was not fun to clean either. I retired the barrel and made a 6 BR with the same platform. It also shoots the 105s but at 2850 fps. </p><p></p><p>Lesson learned? Find a load and stick with it!</p></blockquote><p></p>
[QUOTE="AZShooter, post: 1221289, member: 5219"] I posted this once before. I had a 28" barrel Bartlein 5R chambered for 6mm-284. I made the mistake of trying all sorts of bullets and powders. It didn't take long to severely scorch the insides of the barrel. By the time I got to trying the new RL-33 the barrel's throat and rifling were altered BUT it still shot. Some background: Seating depth is set so loaded ammo would fit and feed from a Wyatt's mag box in a SA Remington. Jump to lands .065". Previous accuracy load was 58 gr of Retumbo with velocity of 3307 fps At this point I had 890 rounds through the barrel! ------------------------------------------------------------------------------- RL-33 shows on the scene: Using same seating depth and other components I worked up some loads. 62.5 gr 3376 63 gr 3414 63.5 gr 3453 64 gr 3484 most accurate load requires a drop tube to get the powder to fit 64.5 gr some pressure signs I used the 64 gr load with RL-33 to shoot a coues wt at 525 yds four years ago using the 105 berger. That buck wasn't huge and the bullet killed just fine. WARNING. Another guy on LRH tried to work up to 64 and got pressure far earlier than my rifle. By now the rifling is severely worn with 928 rounds through it, which reduces pressure plus I was jumping the bullet. I continued with the 64 gr load to round count 1040. At this point the barrel would shoot fine for perhaps 8 rounds then the group size would open up. Bore scope view showed a horror show of cracks/crazing plus long fissure like cracks running longitudinally with bore. It was not fun to clean either. I retired the barrel and made a 6 BR with the same platform. It also shoots the 105s but at 2850 fps. Lesson learned? Find a load and stick with it! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
RL-33 6mm-284
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