[NorthOfTheCity]

If I had a perfectly zeroed Trijicon on a 5.56 XCR and swapped in a 7.62x39 kit, the BDC would be inaccurate but how far off zero might it be? Would I have to re-zero? LaRue mount.

 

[magikbullet]

until the x39 kits are out there, your guess is as good as ours

the guys with the 6.8 kits might be able to give you an idea though.

 

[ny32182]

You'll have to rezero, and I doubt the BDC is going to be even quasi-accurate. Big velocity difference between 5.56 and 7.62x39. 6.8 or 6.5 would probably be a little closer.

 

[gunner69]

I would go directly to Trijicon to ask that question. If different, they may already have a fix. :2cents: