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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Custom .22-250?
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<blockquote data-quote="quigley257" data-source="post: 3066919" data-attributes="member: 84442"><p>Just a couple more thoughts...</p><p>I will attest to regular 22-250 brass stretching and needing to be trimmed regularly. This may not be a concern for you if you have a bunch of brass and won't be using the rifle for Prairie Dog volume shooting. When I built my first 22 Creedmoor, there wasn't factory brass available so I was forming my own. I did it two different ways. First was necking down 6mm CM brass. The other was just loading up regular 22-250 cases with the bullet seated to jam depth. Both methods worked well and gave great accuracy. The 22-250 to 22CM was much quicker and easier and resulted in good cases. Lapua 22-250 brass formed like this is fantastic. Another thought on twist rate. I did my first build as a 1/7 twist as I was planning on shooting the then new 95gr SMK. It shot this bullet extremely well, but as the barrel wore in, I started have bullet failures with lighter 75 and even 88gr ELDMs. When we built a 22CM for my brother we used a 1/8 twist. His rifle shoots like a laser and will reliably stabilize 88gr ELDMs, although it shoots the Berger 80.5s the best. My opinion would be do a 1/8 twist 22-250 AI or a 22CM since you have brass that will work for both. Good luck!!</p></blockquote><p></p>
[QUOTE="quigley257, post: 3066919, member: 84442"] Just a couple more thoughts... I will attest to regular 22-250 brass stretching and needing to be trimmed regularly. This may not be a concern for you if you have a bunch of brass and won't be using the rifle for Prairie Dog volume shooting. When I built my first 22 Creedmoor, there wasn't factory brass available so I was forming my own. I did it two different ways. First was necking down 6mm CM brass. The other was just loading up regular 22-250 cases with the bullet seated to jam depth. Both methods worked well and gave great accuracy. The 22-250 to 22CM was much quicker and easier and resulted in good cases. Lapua 22-250 brass formed like this is fantastic. Another thought on twist rate. I did my first build as a 1/7 twist as I was planning on shooting the then new 95gr SMK. It shot this bullet extremely well, but as the barrel wore in, I started have bullet failures with lighter 75 and even 88gr ELDMs. When we built a 22CM for my brother we used a 1/8 twist. His rifle shoots like a laser and will reliably stabilize 88gr ELDMs, although it shoots the Berger 80.5s the best. My opinion would be do a 1/8 twist 22-250 AI or a 22CM since you have brass that will work for both. Good luck!! [/QUOTE]
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Custom .22-250?
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