A Data-Driven Approach To Precision Rifles, Optics & Gear

About Cal

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. Cal has an engineering background, unique data-driven approach, and the ability to present technical information in an unbiased and straight-forward fashion. For more info, 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 think that this is a bad design. I don’t understand the benefits of having a bolt on an AR frame. If you are going to have an AR have an AR. Stupid. I own a pile of long range rifles and this would never be in my safe!!!!!

    • Well, I guess that’s one opinion. Some of the most accurate rifles in the world are built off tube guns with receivers that are very similar to this, like the Eliseo chassis or the Remington MSR that I recently reviewed. It’s not a ludicrous idea. You definitely don’t have to buy it, and you’re entitled to your opinion … but it’s not a terrible idea.


  2. What a great design, Gun, Period.

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