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The Range
Ammo & Reloading
Magnum or standard
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<blockquote data-quote="diggler1833" data-source="post: 3686657" data-attributes="member: 48072"><p>I have a rather hot load for my .223 SPS Tactical that uses exactly what you have. It will crater primers pretty badly in temps above 80 degrees F:</p><p></p><p>LC '08 brass</p><p>69gr SMK</p><p>25.5gr (work up...may not be safe in your rifle)</p><p>CCI 400 (standard primer)</p><p>2.280 COL</p><p></p><p>This load is a laser in my rifle. For (5), five shot groups it averaged .502 MOA, and that is with one of the groups opening up to 3/4".</p><p></p><p>At no point will you need a magnum primer to efficiently burn ball powder in a .223/5.56. You can save those for slightly larger cartridges (6.5 Grendel, 6.8 SPC etc...). </p><p></p><p>* However, for an AR you may want a primer with a slightly harder cup to potentially reduce the chance of an accidental discharge...Ive not personally seen it happen, but I've heard the internet rumors. But the firing pin will bump the primer as the round is chambered. That small dent is enough to have me save my Federal primers for bolt gun loads.</p><p></p><p>I use a standard CCI 200 with Ramshot TAC and H4895 with lighter bullets in my .308. Never had an issue, and I hunt hogs in sub freezing temps (limited to about 25 degrees F though...nothing too extreme).</p><p></p><p>You can also use a #41 primer in place of a magnum SRP if you have those on hand as they are just about perfectly interchangeable. I'd drop the charge weight though and work back up if you are flirting with max weights.</p><p></p><p>I load for two .223 bolt guns, and over a half dozen 5.56 ARs.</p><p></p><p>Best of luck to you.</p></blockquote><p></p>
[QUOTE="diggler1833, post: 3686657, member: 48072"] I have a rather hot load for my .223 SPS Tactical that uses exactly what you have. It will crater primers pretty badly in temps above 80 degrees F: LC '08 brass 69gr SMK 25.5gr (work up...may not be safe in your rifle) CCI 400 (standard primer) 2.280 COL This load is a laser in my rifle. For (5), five shot groups it averaged .502 MOA, and that is with one of the groups opening up to 3/4". At no point will you need a magnum primer to efficiently burn ball powder in a .223/5.56. You can save those for slightly larger cartridges (6.5 Grendel, 6.8 SPC etc...). * However, for an AR you may want a primer with a slightly harder cup to potentially reduce the chance of an accidental discharge...Ive not personally seen it happen, but I've heard the internet rumors. But the firing pin will bump the primer as the round is chambered. That small dent is enough to have me save my Federal primers for bolt gun loads. I use a standard CCI 200 with Ramshot TAC and H4895 with lighter bullets in my .308. Never had an issue, and I hunt hogs in sub freezing temps (limited to about 25 degrees F though...nothing too extreme). You can also use a #41 primer in place of a magnum SRP if you have those on hand as they are just about perfectly interchangeable. I'd drop the charge weight though and work back up if you are flirting with max weights. I load for two .223 bolt guns, and over a half dozen 5.56 ARs. Best of luck to you. [/QUOTE]
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