Load development

Discussion in 'Reloading' started by mkk, Jun 13, 2015.

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  1. mkk

    mkk Member

    Apr 13, 2015
    I am quite sure this will create some debate because I know there are several different ways to accomplish a load for my rifle.

    I am limited to .030 off the lands because of a magazine

    1. Should I start with .030 OTL and play with powder in .5g increments? If so when I find that nice group then try to tweek the OTL

    2. Should I start with a set charge of powder and play with seating depth? When I find the sweet spot then start adding powder assuming I will start at a low charge initially
    Last edited: Jun 13, 2015
  2. Engineering101

    Engineering101 Well-Known Member

    Jan 29, 2013
    Either approach will work but there are quite a few bullets that like to jump 0.030" give or take with Berger VLDs being a possible exception so I'd load up a ladder with your chosen powder and see what it will do with the 0.030" jump.
  3. g0rd0

    g0rd0 Well-Known Member

    Mar 9, 2012
    what he said:)
  4. Mikecr

    Mikecr Well-Known Member

    Aug 10, 2003
    I say do a full blown seating test, if results are beyond the magazine go to another bullet or eliminate the magazine limit.
    Shoot a ladder, test a couple possibles from the ladder, and tweak seating to shape grouping.
  5. Mike 338

    Mike 338 Well-Known Member

    Feb 4, 2012
    I'd find a rough preferred seating depth, then work up a powder charge (Optimal Charge Weight) and then fine tune seating depth.
  6. Corey Schwanz

    Corey Schwanz Well-Known Member

    Nov 10, 2014
    I would start with a minimum charge and play with seating depth to see if the rifle will shoot well at .030" or if it'll handle something maybe even a bit shorter. Never know 'til you try! Once you figure out what depth your rifle has a tendency to shoot well, start playing with powder charges to find a velocity node that produces the accuracy you are looking for.
  7. Lefty7mmstw

    Lefty7mmstw Well-Known Member

    May 13, 2012
    all good advice on seating depth....
    I will say that the size of the case plays into how large of a jump I'll go between charge weights... a 223 or similar may well need a small charge increase like .5 gr... A bigger caliber like a 300rum may not really show changes until you jump a couple of grains at a time... You can always fine tune your charge...