11 degree crown w/40 degree recess
- Thread starter 6mmdasher
- Start date
Butch Lambert
Active member
Do a search, as this has been hashed and rehashed many times. It don't matter as long as you have a clean sharp crown.
Butch
Butch
adamsgt
Jerry Adams
Search no help
I see the comment of "do a search" often and understand why. BUT, search is often not helpful. So, just for grins, I did a search on "40 degree recess" which is what 6mmdasher asked about. I got ten threads with the words recess and degree in them but nothing that addressed the question he is asking.
I try to search so as to avoid the "do a search dummy" retort when I ask a question but the search tool is just not that good.
I see the comment of "do a search" often and understand why. BUT, search is often not helpful. So, just for grins, I did a search on "40 degree recess" which is what 6mmdasher asked about. I got ten threads with the words recess and degree in them but nothing that addressed the question he is asking.
I try to search so as to avoid the "do a search dummy" retort when I ask a question but the search tool is just not that good.
jackie schmidt
New member
Recess
The only function that a recess has on the crown of a Benchrest Rifle is to perhaps protect it in the event you drop the Rifle and it lands muzzle first......jackie
The only function that a recess has on the crown of a Benchrest Rifle is to perhaps protect it in the event you drop the Rifle and it lands muzzle first......jackie
On BR Rifles I've used 90 degree straight crowns with no chamfer and on Hunting / Tactical / Field Style Rifles I've used 11 degree and a USMC style crowns with a 90 degree flat .090” deep with a 45 degree pull back and a 60 degree chamfer. These shot equally well.
With crowns, all that matters is that they are perpendicular to the bore and free of burrs. They all work. There are no special or magical crowns.
C
Cheechako
Guest
adamsgt
You're not using the search function correctly. I got 40 hits using "recessed + crown". Try coupling all of the words.
Ray
You're not using the search function correctly. I got 40 hits using "recessed + crown". Try coupling all of the words.
Ray
Bob Kingsbury
New member
Its not clear to me what 6mmdasher is asking. Saying that the 40
degree recess is into the lands, imply's a chamfer as on a 40X. The
40 degree recess doesn't normally meet the lands. Some people cut
the end of the barrel at 11 degrees and then add a chamfer where it
meets the lands. Thats not an 11 degree crown.
degree recess is into the lands, imply's a chamfer as on a 40X. The
40 degree recess doesn't normally meet the lands. Some people cut
the end of the barrel at 11 degrees and then add a chamfer where it
meets the lands. Thats not an 11 degree crown.
adamsgt
Jerry Adams
Ray, it may be that I'm ignorant on parameters to use for concatenating words or characters for a search. I went to the FAQ section on the search function and didn't find anything along those lines. Can you point me to a help topic that will show me how to compose a search string. You used a + (plus) sign in your example; where is that type of information available on the board? Also you may have gotten forty hits using recessed and crown but that's not the search string I used. I used "40 degree recess". So, should I have put a + between 40 and degree and another one between degree and recess and enclosed the whole thing in quotes? i.e. "40+degree+recess"