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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
.458 frustrations
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<blockquote data-quote="jfloyd" data-source="post: 1703123" data-attributes="member: 73643"><p>I've had the 458 for 6 plus years but never wanted subsonics for it. Who's parts are you using? Tromix is THE authority on the 458S. Unique is not the correct powder either. Do not modify anything until you use Reloader 7, or IMR 4198. I would not modify anything either then until you speak with the manufacturer of the upper/parts or Tony. A proper upper will function without any modifications to the gas port or springs with the appropriate powders. Again Unique is not appropriate to function as the round was designed. Way too fast so you port pressure will be too low to cycle the action. Same for TB. Use the 458 SOCOM forum search function. You will find most issues discussed there as well. </p><p></p><p>Good luck!</p></blockquote><p></p>
[QUOTE="jfloyd, post: 1703123, member: 73643"] I’ve had the 458 for 6 plus years but never wanted subsonics for it. Who’s parts are you using? Tromix is THE authority on the 458S. Unique is not the correct powder either. Do not modify anything until you use Reloader 7, or IMR 4198. I would not modify anything either then until you speak with the manufacturer of the upper/parts or Tony. A proper upper will function without any modifications to the gas port or springs with the appropriate powders. Again Unique is not appropriate to function as the round was designed. Way too fast so you port pressure will be too low to cycle the action. Same for TB. Use the 458 SOCOM forum search function. You will find most issues discussed there as well. Good luck! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
.458 frustrations
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