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Cal Zant is the shooter/author behind PrecisionRifleBlog.com. Cal is a life-long learner, and loves to help others get into this sport he's so passionate about. His engineering background, unique data-driven approach, and ability to present technical and complex information in a unbiased and straight-forward fashion has quickly caught the attention of the industry. For more info on Cal, check out PrecisionRifleBlog.com/About.

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Bullet Jump Load Development

Bullet Jump: Is Less Always Better?

This landmark article shares new, primary research that Mark Gordon from Short Action Customs has compiled over the past 2 years. He tested a wide range of bullet jumps in several rifle/load configurations, and this post shares the analysis of that data. Mark used a similar approach to the Audette Ladder Test and OCW method, but the goal was to not find the most forgiving powder charge weight, but the most forgiving bullet jump. He wasn’t looking for the specific bullet jump that grouped the best, but the largest window of bullet jumps that provided a similar point of impact. That means the rifle would be more consistent from the start of the match to the end of it or could shoot a particular kind of match-grade factory ammo really well for a longer period of time. Mark’s findings may seem counter to conventional wisdom when it comes to bullet jump, but a few national-level precision rifle competitors also support the idea, which I highlight in this post as well.


  1. I have a Kimber LPT 84M 308 and I am thinking of a muzzle brake for the rifle do you think it is a good idea and what kind

    • Yeah, I think it’s a good idea for just about any rifle. It helps reduce recoil and muzzle rise, which keeps you on target and helps you spot shots. The only downside is increased noise (and muzzle blast on poor designs), so where hearing protection. Pretty simple (and we should probably be doing that without a muzzle brake). And you’ve found the one I’d buy. There are a ton of designs out there, but I haven’t found one better than this JEC.

  2. I am looking for the correct muzzle brake for my .300 win mag – A Bolt III

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