You are Unregistered, please register to use all of the features of!    

Firearm & Gun Forum - > Long Guns > General Rifle Discussion >


LinkBack Thread Tools Display Modes
Old 10-03-2007, 03:13 AM   #1
Feedback Score: 0 reviews
Join Date: Oct 2007
Posts: 1
Default question??

I have a barrell conversion for my 30m1 Carbine. The papers say it is chambered for 5.7mm Johnson. Does anyone have any idea what that is and where can I get ammo or brass for reloading the darn thing?? Send answers to: as well as here. Thank you, FalconK

FalconK is offline  
Reply With Quote

Join Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join Today! - Click Here

Old 10-03-2007, 01:26 PM   #2
Feedback Score: 0 reviews
Join Date: Sep 2007
Location: Sidney,Oh.
Posts: 495
Liked 12 Times on 11 Posts


The 5.7mm Johnson is the .30 Carbine case necked down to .22 cal. From the data I have you should get around 2,850 with a 40 gn. bullet and 2,700 fps with a 50 gn. bullet. You would have to make your own brass. This is done by necking down .30 carbine brass. To do this you would need a set of form dies and have to annel the cases. If your not into wildcatting this would not be a real good choice to start with, but it`s not impossible eather.
Catfish is offline  
Reply With Quote

Thread Tools
Display Modes

Newest Threads