View Single Post
Unread 09-21-2017, 09:42 AM   #2
G.T.
Lifer
Lifetime Forum
Patron
 
Join Date: Jun 2002
Location: Chandler Arizona
Posts: 3,483
Thanks: 1,282
Thanked 3,579 Times in 988 Posts
Default barrel angle

Hi Kiwi Mark! The feed ramp angle, for some reason, doesn't seem to be a finite measurement.. It just kind of appears if you follow the prints measurements on all other cuts? But, I can tell you this, as to what we have discovered at G.T. Specialties.. If you install in the barrel bore, back extending thru the chamber, a 8.8 MM drill blank / rod, or one that even more closely fits your bore, a new heavy duty Stanly Razor Knife blade will make an "EXACT" gauge for the angle present from the factory? We then measured the blade angle and it was exactly 50 degrees from the bore center line, to the ramp angle inclusive. I think most of the machinist guys here have found 46 degrees to be close to what the print says?... We cut all of ours 50 degrees and then by hand, polish to a quite full / throated finished shape. Very important you don't go to deep, as the case mouth will stop right at the ramps end in the chamber... Very tight vertical Jam will result! .......... How's that? Will that help! Best to you, til...lat'r.....GT
G.T. is offline   Reply With Quote
The following member says Thank You to G.T. for your post: