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<blockquote data-quote="dennishoddy" data-source="post: 3971963" data-attributes="member: 5412">Yes, I copied the design and did a little engineering on my part when building several of the .223 rounds since I have a lathe available. Made it pretty quick with the correct reamer, drill bit and countersink to make the primer pocket that would accept the 209-shotgun primer and allow it to be removed easily. Then took a small punch to dimple the case neck right at the base to hold the pellet in place. Some of the YouTube videos say to neck size the case so the pellet can be pressed in but they get a lot of failure&#039;s because it&#039;s too tight. I left it as fired and used the dimple to contain the pellet. Deforming the neck slightly with the punch held it just fine. I have buckets of .223 so burning a few cases isn&#039;t a problem. I&#039;d think using the 209 shotgun primer on the Hornet would be too big for the base. It would be interesting to use a large rifle magnum primer though.</blockquote>

[QUOTE="dennishoddy, post: 3971963, member: 5412"] Yes, I copied the design and did a little engineering on my part when building several of the .223 rounds since I have a lathe available. Made it pretty quick with the correct reamer, drill bit and countersink to make the primer pocket that would accept the 209-shotgun primer and allow it to be removed easily. Then took a small punch to dimple the case neck right at the base to hold the pellet in place. Some of the YouTube videos say to neck size the case so the pellet can be pressed in but they get a lot of failure's because it's too tight. I left it as fired and used the dimple to contain the pellet. Deforming the neck slightly with the punch held it just fine. I have buckets of .223 so burning a few cases isn't a problem. I'd think using the 209 shotgun primer on the Hornet would be too big for the base. It would be interesting to use a large rifle magnum primer though. [/QUOTE]

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