Thank you! But what to do instead, if I'm unable to get regular .22lr barrels? Polishing could work of course, but if it has the incorrect size, it's still likely to blow all the time.
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Help & Support @forum.guncadindex.com .22 burst cases
Hi everybody, I've made multiple very nice 3D2A builds so far, but only with .22's I get an issue I can't solve on my own.
After nearly every shot, the case ruptures and gets stuck in the chamber, I have to pull it out with tweezers. I've got this issue on multiple completely different .22 builds, all using a 8mm OD x 6mm ID liner. So far on the NULL-22 and on both of my HD22c.
Ju5t3nc4s3 wrote on the sea, that the chamber needs to be tampered and polished. But what is he meaning? Can someone explain further? How to tamper a 6mm ID tube? If I would try to polish it, I would get 6.1...6.2mm in the end. I'm confused.
Thank you, I understood. According to SAAMI chamber specs, the chamber needs to be widened to around 5.86mm.
Of course, I could buy a reamer from aliexpress. And/or sand the shit out of it. But if I use a reamer, or sand it, I will just increase the size of my 6mm tube, and increasing the bursts. So I need a 5,5mm tube to start with, if I'm right?