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Rifles, Reloading, Optics, Equipment
Reloading
Usually on the giving end of advice...need help
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<blockquote data-quote="AZShooter" data-source="post: 2645116" data-attributes="member: 5219"><p>I have had five 6mm-284s in various configurations.</p><p></p><p> Own a reamer that has a .277" chamber neck. I turn the necks for a .006" total neck release clearance. (.003" per side) The brass is 6.5-284 Lapua turned neck wall thickness is .014" Loaded brass neck OD is .271"</p><p></p><p>I use Fed 210 match primers with all of those 6mm-284s</p><p></p><p>As for powder with 105-107 gr bullets I had my best results with Retumbo and RL-33. </p><p></p><p>===========================</p><p></p><p>Randy Derks set a world record many years ago. (certain he has been beaten but at the time iw was remarkable) He was using RL-22!</p><p>54 grains of Reloader 22 - Federal 210m primer - Sierra 107 grain Match King bullet - 3425 fps</p><p></p><p>===================</p><p></p><p>I agree you turned your lapua neck wall thicknesses too thin. Large difference between chamber and loaded neck OD which would result in over working the brass, requiring frequent annealing or they would crack prematurely. Neck tension can't be increased much as thin brass doesn't have much tensile strength.</p><p></p><p>Did you also turn the Pederson brass? If so, to what dimension? Do you know size of the chamber neck? Trying to give you some things to consider. </p><p> </p><p></p><p>What velocity are you getting with your 26" barrel with each bullet? There isn't much load data out the maybe you are over the top?</p><p></p><p>Now you have more things to consider. </p><p></p><p>Maybe ignore the ES spread and shoot the rifle at 600 yards and see how it does.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 2645116, member: 5219"] I have had five 6mm-284s in various configurations. Own a reamer that has a .277" chamber neck. I turn the necks for a .006" total neck release clearance. (.003" per side) The brass is 6.5-284 Lapua turned neck wall thickness is .014" Loaded brass neck OD is .271" I use Fed 210 match primers with all of those 6mm-284s As for powder with 105-107 gr bullets I had my best results with Retumbo and RL-33. =========================== Randy Derks set a world record many years ago. (certain he has been beaten but at the time iw was remarkable) He was using RL-22! 54 grains of Reloader 22 - Federal 210m primer - Sierra 107 grain Match King bullet - 3425 fps =================== I agree you turned your lapua neck wall thicknesses too thin. Large difference between chamber and loaded neck OD which would result in over working the brass, requiring frequent annealing or they would crack prematurely. Neck tension can't be increased much as thin brass doesn't have much tensile strength. Did you also turn the Pederson brass? If so, to what dimension? Do you know size of the chamber neck? Trying to give you some things to consider. What velocity are you getting with your 26" barrel with each bullet? There isn't much load data out the maybe you are over the top? Now you have more things to consider. Maybe ignore the ES spread and shoot the rifle at 600 yards and see how it does. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Usually on the giving end of advice...need help
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