Max load, new barrel break-in

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by .284me, Aug 7, 2012.

  1. .284me

    .284me Active Member

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    Nov 11, 2010
    Hello,

    I'm looking for some experience and or opinions on tuning a load for a new barrel. My first custom rifle will be done here shortly and i want to break it in properly, if there is really such a thing. It is chambered in 6.5-284, Lilja Tactical contour, 1-8" twist, built on a 1965 Winchester push feed action. I will be shooting the Berger 140 VLD hunting bullet. I plan on using Eric Steckers method to tune these bullets with varying seating depth but that requires a known maximum safe working pressure/powder charge. My question for you guys is it ok to look for that max load during break in? Cleaning between shots like you would normally break in a barrel. Or should I designate the first 20 rounds to low charge, break in only rounds? Thoughts, opinions, procedures? Thanks!
     
  2. MT4XFore

    MT4XFore Well-Known Member

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    Oct 20, 2005
    Personally I would designate my first 20 rounds to break-in, but not at unusually slow speeds. Just load up a normal load and shoot them. Shoot at a target and watch your group form, you will probably notice that as the cleaning process becomes easier, your group will start getting smaller. After that, tinker all you want. Just my opinion.
     

  3. BlackKnight755

    BlackKnight755 Well-Known Member

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    Jun 30, 2010
    I like to use the break in rounds to obtain all the usable data that I can. When I start with a fresh barrel, I already know that there are only going to be so many rounds that I can shoot through that barrel before I have to rebarrel or rechamber (set it back) that particular barrel so I try to utilize every round that goes down the tube. Especially on my 6.5-284's, they are bad throat eroders, usually no more than 1100 to 1200 rounds before they have to be rechambered. By the end of the break in period, I have my max pressure for the particular projectile that I plan to shoot and I have already started to collect and document data that I can use for fine tuning the load... just my opinion though, BK.
     
  4. .284me

    .284me Active Member

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    Nov 11, 2010
    Thanks guys! I am planning on shooting through the chrony, sighting in, and checking for level crosshairs while breaking it in. I will try to collect as much data as i can during this process. The barrel is finished at 27" so I'm thinking I will try to shoot for the 2,950-3,000 fps area rather than trying to look for max pressure signs, and then adjust seating depth for accuracy. What do you guys think? What kind of velocity are you getting with similar components?
     
  5. Time Killer

    Time Killer Well-Known Member

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    Jan 26, 2011
    What all data do you collect for each shot?