Fluting blanks

Discussion in 'Main Message Board' started by 4xforfun, Mar 19, 2020.

  1. 4xforfun

    4xforfun Gold $$ Contributor

    Joined:
    Apr 25, 2010
    Messages:
    2,522
    Not finding what I want on the search engine. What is the "rule" for fluting tubes. I found a tube I want/need, but it needs to be fluted to make weight. Krieger 17# HV

    Thanks,
    Tod
     
  2. Willie

    Willie Gold $$ Contributor

    Joined:
    Feb 3, 2017
    Messages:
    673
    Because of variances in caliber and barrel contour, you would be safe by checking with your manufacturer, to not overly flute. Some show it on their site, some would answer a phone question.
     
    Stan Taylor and 338 dude like this.
  3. dogdude

    dogdude Egan O'Brien Gold $$ Contributor

    Joined:
    Feb 20, 2009
    Messages:
    919
    Tod, I had a 2'' blank fluted Deep, Really Deep.it saved 7 oz, you probably be better off taking an inch or so off..if you can.
     
  4. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

    Joined:
    May 8, 2014
    Messages:
    16,571
    Get it completely chambered and fit before you do anything. Tell the gunsmith how much it can weigh. You can take less off the big end compared to the front end. Then send it to boltfluter to get the right kind of fluting to take off the weight
     
    cjames, DaveTooley and Stan Taylor like this.
  5. C.E.Smith043

    C.E.Smith043 Gold $$ Contributor

    Joined:
    Jul 6, 2017
    Messages:
    354
    To my understanding it's best to flute before the final lapping is done. Is this correct? Seems like I read an article in PS years ago on this topic and supposedly fluting after final lapping would cause some irregularities in the bore deminisons, admittedly very minute.
     
  6. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

    Joined:
    May 8, 2014
    Messages:
    16,571
    Its all in how accurate you need it to be. Youll never know it was fluted on anything but a very good short range br rifle.
     
  7. Nightraider

    Nightraider Silver $$ Contributor

    Joined:
    Sep 19, 2018
    Messages:
    328
  8. Frank Blum

    Frank Blum Silver $$ Contributor

    Joined:
    Feb 25, 2010
    Messages:
    587
  9. XTR

    XTR Gold $$ Contributor

    Joined:
    May 15, 2011
    Messages:
    3,812
    Looks like a concrete bit
     
  10. Stan Taylor

    Stan Taylor Gold $$ Contributor

    Joined:
    Sep 2, 2017
    Messages:
    1,589
    20200320_071518-1.jpg I don't think you guys realize what a handful of chips weigh.LOL
    Here is one pass 26 inches on turning a gun barrel .150 thousands this is approximately how much the chips weighed approximately.
     
    Last edited: Mar 20, 2020
    varminthunter1, hpshooter and jepp2 like this.
  11. DaveTooley

    DaveTooley Silver $$ Contributor

    Joined:
    Sep 29, 2008
    Messages:
    984
    How much weight do you need to save?
    For every .250" on the breech end of a 1.250" barrel you save 1.33 ozs.
    I would start there.
     
    cjames, dogdude, Stan Taylor and 2 others like this.
  12. XTR

    XTR Gold $$ Contributor

    Joined:
    May 15, 2011
    Messages:
    3,812
    Can’t read the units on the scale. .4 oz?
     
    Stan Taylor likes this.
  13. Stan Taylor

    Stan Taylor Gold $$ Contributor

    Joined:
    Sep 2, 2017
    Messages:
    1,589
    That scale is 1.6 ounces per tenth the scale reads .40 so that would be 6.4 ounces.
     
  14. jdh47

    jdh47 Silver $$ Contributor

    Joined:
    Jan 23, 2010
    Messages:
    526
    Krieger does fluting, why not let them do it? You can call them and get a quote. It couldn't hurt.
     
    4xforfun likes this.
  15. dmoran

    dmoran Donovan Moran Silver $$ Contributor

    Joined:
    Nov 25, 2004
    Messages:
    3,278
    Tod
    Have only had one match barrel fluted, and did it for the weight savings exclusively.
    31" HV Bartlein 6mm/243 --- 6 flutes, 22" long each, reduced the weight 1-lb

    Note: personally would never flute a pulled "button rifled" barrel unless it was fluted before it is rifled, do to added stress. But the fluting to a single point "cut rifled" barrel is a form of stress relief, which can be done before or after rifling.
    Good Luck
     
  16. JimPag

    JimPag

    Joined:
    Dec 6, 2013
    Messages:
    1,282
    IMG_1414.JPG I just had this done about a month or so ago. They took off 21oz on a HV Krieger 17TW. It balances just exactly where I run all my rifles. IMG_1411.JPG IMG_1412 (1).JPG
     
    Last edited: Mar 20, 2020
    simo hayha, Adam in WI and remdriver like this.
  17. Ramblerman

    Ramblerman Gold $$ Contributor

    Joined:
    Mar 14, 2016
    Messages:
    238
    Stan Taylor likes this.
  18. Stan Taylor

    Stan Taylor Gold $$ Contributor

    Joined:
    Sep 2, 2017
    Messages:
    1,589
    20200320_115742-1.jpg 20200320_120410-1.jpg After reading someone's comment about not fluting button rifled barrels I thought I would do a little bit of measuring and here's what I come up with I air gauged it from one end to the other and needle didn't move on air gauge no fluctuation whatsoever so I tend to disagree on the fluting of a button rifle barrel.
     
    Last edited: Mar 20, 2020
  19. INTJ

    INTJ Gold $$ Contributor

    Joined:
    Feb 10, 2018
    Messages:
    786
    Several years ago I had a 300 WSM LR/BR Light Gun built. I told the gunsmith (a barrel maker) to make the barrel 1.45 for 5" with a straight taper to .95" at 30", then flute to make weight.

    He made the barrel then cut 10 flutes .25 x .25 x 24". That was way too much. The rifle could have weighed 17 lbs but came in at 15lbs 2oz WITH a NF BR scope mounted.

    That rifle shot very well. One year I shot five screamer groups with it and set two club agg records. However, the barrel acted more like a LV contour. While it was exceptional when shooting five shot groups, it was not competitive shooting 10-shot groups.

    I had my puller spot my bullets one day during a 10 shot group. The first five were awesome, but shots 6-10 progressively opened up in an arc. So I stopped shooting it in the HG class.

    On the plus side, with that many flutes that deep and wide, the barrel did cool a little more quickly.
     
  20. shoot4fun

    shoot4fun Gold $$ Contributor

    Joined:
    Feb 13, 2005
    Messages:
    1,743
    Check with Greg at Southern Precision Rifles. Website is bugholes.com
    He has a bunch of barrels in stock and can flute them as well.
     

Share This Page