Making a more thermally stable rifle

Discussion in 'Practical Long-Range Rifle Shooting' started by strow, Dec 30, 2011.

  1. strow New Member

    Zak, can you give more detail into how you go about getting your LR rifles to be more thermally stable?

    What else besides a quality bedding job and barrel goes into a rifle that shoots POA/POI thought a course of fire?

    Does cryo'ing the barrel help any?
    How much do the ‚Äútemperature insensitive‚ÄĚ powders help as the seasons change?
  2. Zak Smith Operations

    • Instructor
    Zak Smith
    Personally I buy complete AI rifles - problem solved.

    In a conventional rifle, a good non-wood stock and bedding job should do it. A custom or blueprinted action should help, and a barrel that was made right will help.

    I don't think cryoing the barrel is necessary. Only one of my rifles has had one (older JP CTR02), but the majority of my rifles just have top-shelf "cut" match barrels.

    I've seen as small as 10 fps change in temp stable powders. Anything less than a 40 fps spread is doing really good (freezing to 100).

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