A
Andre
Forum Guest
Register Today
Here is an ongoing thread showing my progress on a bolt action rifle build. This is more of a concept build to see if I can build it than to use, but I would like to see it fire when it's done.
It's chambered in a custom cartridge, a .22 hornet casing cut down before the neck, with a insert made for the case to shoot a .22 projectile, probably a .22 caliber airgun pellet. Will be fired with just the primer, or maybe a grain of powder. The action will be 100% custom made from mild steel for the exception of the firing pin that will be made from drill rod. The barrel is a .22 caliber airgun barrel, 7/16" OD. Some will say it's too thin for a firearm barrel, but this cartridge will be so low powered (lighter than a .22 short!) that I'm not worried about it.
The action is a thick walled tube, it's already threaded and has the ejection port cutout. The ID of the tube is .4" so it will be bored a little larger. The case rim diameter is not too much smaller than the ID of the tube so I need to open the action for the bolt's extractor to have room to fit between the case and action. It's a tight fit!
I can't seem to find the first pictures of threading the action and cutting the taper, I must've deleted the email I sent them in. I did post them in my blog, so if you want to see them they are there but it's just facing, tapping, and cutting a taper. Nothing real interesting.
Here are some later pictures though,
The action with election port cutout with a ball endmill and the cartridge casing sitting inside.
The 7/16" OD barrel threaded 7/16-20, with a tenon cut to fit inside the action to reach further past the tapered part. For strength, and the barrel is really too small for this job, that the distance between the bottom of the V thread and the chamber would be too thin for my liking, so I offset the two parts, and it seemed to help.
Chamber roughed in with a drill bit, these are fired casings I picked up at the range, and they are slightly tapered so I still have to clean up the chamber so they will fit.
And the action fits nice and tight on the barrel. It runs true, within a few thou sticking out about 12" from the collet. I'm happy.
Hopefully this build goes to plan, and safety Nazi's keep at bay.
It's chambered in a custom cartridge, a .22 hornet casing cut down before the neck, with a insert made for the case to shoot a .22 projectile, probably a .22 caliber airgun pellet. Will be fired with just the primer, or maybe a grain of powder. The action will be 100% custom made from mild steel for the exception of the firing pin that will be made from drill rod. The barrel is a .22 caliber airgun barrel, 7/16" OD. Some will say it's too thin for a firearm barrel, but this cartridge will be so low powered (lighter than a .22 short!) that I'm not worried about it.
The action is a thick walled tube, it's already threaded and has the ejection port cutout. The ID of the tube is .4" so it will be bored a little larger. The case rim diameter is not too much smaller than the ID of the tube so I need to open the action for the bolt's extractor to have room to fit between the case and action. It's a tight fit!
I can't seem to find the first pictures of threading the action and cutting the taper, I must've deleted the email I sent them in. I did post them in my blog, so if you want to see them they are there but it's just facing, tapping, and cutting a taper. Nothing real interesting.
Here are some later pictures though,
The action with election port cutout with a ball endmill and the cartridge casing sitting inside.
The 7/16" OD barrel threaded 7/16-20, with a tenon cut to fit inside the action to reach further past the tapered part. For strength, and the barrel is really too small for this job, that the distance between the bottom of the V thread and the chamber would be too thin for my liking, so I offset the two parts, and it seemed to help.
Chamber roughed in with a drill bit, these are fired casings I picked up at the range, and they are slightly tapered so I still have to clean up the chamber so they will fit.
And the action fits nice and tight on the barrel. It runs true, within a few thou sticking out about 12" from the collet. I'm happy.
Hopefully this build goes to plan, and safety Nazi's keep at bay.
