close
Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Gunsmithing

Reply

What does my Cooper need?

LinkBack Thread Tools Display Modes
  #1  
Unread 06-16-2011, 09:02 PM
Bronze Member
 
Join Date: Jun 2011
Posts: 84
What does my Cooper need?

Cooper Pic Link
Cooper Load Data Link



It came stock "bedded and floated", I've adjusted the trigger and it's nice and crisp now. The weird thing is the barrel isn't crowned, would crowning the barrel give me any better accuracy than shown in my .PDF of load data? How about blueprinting? I'm really not sure what is all done at the Cooper factory, so if anyone knows that would be great aswell.

I came here instead of bothering Dan (Cooper) in his "new" life, He's a damn good guy though, I feel horrible about what happened. (He is doing very well now, about all I can say....)

Thanks!

Last edited by B-RAD; 06-18-2011 at 03:36 PM.
Reply With Quote
  •   #2  
    Unread 06-16-2011, 09:29 PM
    Platinum Member
     
    Join Date: Nov 2005
    Location: Riggins Idaho
    Posts: 1,195
    Re: What does my Cooper need?

    What do you mean by when you say its not crowned? If they didn't crown it id be for getting on the phone. Id shoot it first and see how she does. If it shoots good don't touch it till it needs a new barrel
    __________________
    I dont know who ever came up with the imaganary word of "Over Gunned"
    Reply With Quote

      #3  
    Unread 06-17-2011, 05:10 PM
    Bronze Member
     
    Join Date: Jun 2011
    Posts: 84
    Re: What does my Cooper need?

    Quote:
    Originally Posted by screech View Post
    What do you mean by when you say its not crowned? If they didn't crown it id be for getting on the phone. Id shoot it first and see how she does. If it shoots good don't touch it till it needs a new barrel
    Unless there is a microscopic crown on the muzzle.... there isn't one. As for how it shoots... did you look at the pdf?
    Reply With Quote
      #4  
    Unread 06-17-2011, 05:46 PM
    Platinum Member
     
    Join Date: Apr 2010
    Location: Allen, TX
    Posts: 2,608
    Re: What does my Cooper need?

    It comes blueprinted and crowned from the factory. It likely has what's called a recessed target crown which is anywhere from 0 degrees (flat) to 11 degrees but countersunk about .040-.080" in contrast to traditional 45-60 degree hunting rifles.

    If you're consistently and repeatedly shooting 3 shot groups less than .25" center to center at 100 yds with multiple bullets and loads as implied by your pdf, then you're all set.

    If you're getting .105" center to center consistently, then you're ready to go compete.

    -- richard
    Reply With Quote
      #5  
    Unread 06-17-2011, 06:54 PM
    Platinum Member
     
    Join Date: Jul 2004
    Location: Texas
    Posts: 6,927
    Re: What does my Cooper need?

    Quote:
    Originally Posted by B-RAD View Post
    http://img87.imageshack.us/img87/4582/p9250119.jpg
    http://www.myitcrew.net/Cooper.pdf

    Here is my basically stock Cooper .223.

    It came stock "bedded and floated", I've adjusted the trigger and it's nice and crisp now. The weird thing is the barrel isn't crowned, would crowning the barrel give me any better accuracy than shown in my .PDF of load data? How about blueprinting? I'm really not sure what is all done at the Cooper factory, so if anyone knows that would be great aswell.

    Thanks!
    Its hard to second guess anyone but if you can't see any crown it might be a clean 90o cut without
    any recess. This is the same thing as a crown it's just not recessed for protection of the crown.

    I have seen this a few times but consider it not a good idea because any kind of contact with
    the "Crown" can damage it and cause accuracy problems.

    Post a picture of it and let us look at the muzzle.

    Without disassembling the action there is no way to be sure if it was Blue printed or not.

    The 1 in 14 twist seems a little slow for a 223 but if it shoots, great.

    Is your load data yours or theirs, and have you grouped it?

    J E CUSTOM
    __________________
    "PRESS ON"
    Reply With Quote
      #6  
    Unread 06-17-2011, 07:02 PM
    Platinum Member
     
    Join Date: Apr 2010
    Location: Allen, TX
    Posts: 2,608
    Re: What does my Cooper need?

    Quote:
    Originally Posted by J E Custom View Post
    Its hard to second guess anyone but if you can't see any crown it might be a clean 90o cut without
    any recess. This is the same thing as a crown it's just not recessed for protection of the crown.

    I have seen this a few times but consider it not a good idea because any kind of contact with
    the "Crown" can damage it and cause accuracy problems.

    Post a picture of it and let us look at the muzzle.

    Without disassembling the action there is no way to be sure if it was Blue printed or not.

    The 1 in 14 twist seems a little slow for a 223 but if it shoots, great.

    Is your load data yours or theirs, and have you grouped it?

    J E CUSTOM
    I don't care if they trued the action with a bastard file and a claw hammer.
    His PDF says he's shooting .105" groups. (@100yds?)
    That's "blueprinted" by my definition.
    Reply With Quote
      #7  
    Unread 06-17-2011, 07:13 PM
    Bronze Member
     
    Join Date: Jun 2011
    Posts: 84
    Re: What does my Cooper need?

    Quote:
    Originally Posted by rscott5028 View Post
    It comes blueprinted and crowned from the factory. It likely has what's called a recessed target crown which is anywhere from 0 degrees (flat) to 11 degrees but countersunk about .040-.080" in contrast to traditional 45-60 degree hunting rifles.

    If you're consistently and repeatedly shooting 3 shot groups less than .25" center to center at 100 yds with multiple bullets and loads as implied by your pdf, then you're all set.

    If you're getting .105" center to center consistently, then you're ready to go compete.

    -- richard
    under .250" groups are very easy, as for the .105, I'm not ready to compete just yet, I actually had 50 rnds of the exact ammo that made .105 ready to test on paper, but ended up shooting it last week at prairie dogs due to running out of ammo... so in the next few months I plan to do it, just to see if I can repeat that great load. As for the crown it does have what you called a recessed crown, but to me a crown is in the refiling and this surly isn't.



    Quote:
    Originally Posted by J E Custom View Post
    Its hard to second guess anyone but if you can't see any crown it might be a clean 90o cut without
    any recess. This is the same thing as a crown it's just not recessed for protection of the crown.

    I have seen this a few times but consider it not a good idea because any kind of contact with
    the "Crown" can damage it and cause accuracy problems.

    Post a picture of it and let us look at the muzzle.

    Without disassembling the action there is no way to be sure if it was Blue printed or not.

    The 1 in 14 twist seems a little slow for a 223 but if it shoots, great.

    Is your load data yours or theirs, and have you grouped it?

    J E CUSTOM
    The Load Data are my loads and groups over the last 2 years, I don't shoot that often as the range is far away, and I don't shoot competition only prairie dogs once a year

    Attached is an image from 2 years or so ago of the crown, I can get an updated closer and better picture this weekend if needed.
    Attached Thumbnails - Click to View Larger
    What does my Cooper need?-p9190106.jpg  
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes


    Similar Threads for: What does my Cooper need?
    Thread Thread Starter Forum Replies Last Post
    cooper 260 rem airstream Rifles, Bullets, Barrels & Ballistics 15 04-23-2013 02:46 PM
    Cooper ... What do you all think of Cooper Varmint Rifles?? superlite17 Rifles, Bullets, Barrels & Ballistics 11 06-24-2011 11:44 PM
    Wtb cooper 30-06 ajsaunders Guns For Sale 0 12-30-2010 10:14 AM
    6.5-284 Cooper Daniel Hall Long Range Hunting & Shooting 4 03-20-2010 01:57 PM
    FS: Cooper M22 22-250 (ND) nad1967 Guns For Sale 1 07-14-2009 05:32 PM


    All times are GMT -5. The time now is 08:56 AM.


    Powered by vBulletin ©2000 - 2016, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC