BCM Mk12 Mod0 Upper Initial Accuracy Report

Over the past few weeks, I’ve been putting a fair amount of match ammunition through the BCM Mk12.

Most of that has been Prvi 75gr Match, but I’ve also shot Hornady 75gr, Black Hills Blue Box 68 and 75gr, and my own handloads.

Recently, a number of 10 shot groups were fired at 100 and 200 yards using two of the above: Prvi 75gr at 100 yards, and Black Hills 68gr at 200 yards. These groups were shot from the prone, using a Harris bipod for support, a Rock River two stage trigger, and a Bushnell Elite 3200 10x mil-dot scope in medium height rings. I’ll be able to post up more groups in the near future.

At 100 yards, the 3 10 shot groups were:




For a 30 shot average of 1.13″.

Here is the smallest (.99″) group:

The 200 yard groups were shot on a different day and with different ammunition, as noted above – Black Hills Blue Box 68gr Match.

This ammunition was very consistent, with the following 3 10 shot groups:




For a 30 shot average of 1.6″. That’s roughly .8 MOA at 200 yards.

Here is the 1.65″ group – a photo of the 1.45″ will have to wait for technical reasons:

The rifle, sans bipod and optic – other uppers were being tested as well.



Filed under Firearm Components

4 responses to “BCM Mk12 Mod0 Upper Initial Accuracy Report

  1. Scott

    Good stuff, I like real-world accuracy reports. Question though, if you’re testing accuracy why aren’t you shooting off sandbags? Bipod is good until your pulse starts throwing things off, sandbags take so many more variables off the table. My opinion anyway…

    • Andrew (Vuurwapen Admin)

      You’re right, it is a more stable platform. In this case, though, I handed the rifle off to a far more capable shooter, who was able to produce some very nice groups with the rifle and a bipod. I have a better benchrest setup on the way, but it might be a while before it gets here.

  2. How’s the blast shooting with the OPS muzzle brake compared to a regular flash hider? Any plans to pick up the matching 12th model can?

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