BCA 6.5 GRENDEL AT RANGE

[okieshooter777]

So took out the 16" grendel i got from bear creek. Got a truglo nexus 4-12 x 44 and was shooting wolf 100 grain FMJ.

So budget all the way around! Man this thing shoots great!

after a few turns of the dial i was dead on at 50 yards, holding <1" groups. Go out to 100 yards, and seem to be a few inches high consistently. Go out to the 200 yard target and im back to holding around 1-2" groups pretty consistent. Then decided to shoot using the mil dot and using the 8 moa mil dot line, i was hitting the gong every shot, of course the gong is about a 16" x 16" plate, but was still impressed.

Im not very sharp on ballistics, and charting moa.. how high if i am 0 at 50 yards would i be at 100 yards and does this sound right? Seems i was perfect at 50 but higher at 100 by a few inches.

BTW i used "high" scope rings, and when measured it looks to be 2-1/2" from center of barrel to center of scope.

 

[okieshooter777]

pic

 

[swampratt]

You just have to shoot it and see where you will be at.
I thought being on zero at 100 yards would have me lower at 200 and when I shot at 200 I was way high at 200. I then dropped to 3/4" low at 100 and that put me on at 200.. the math made no sense.
My scope was also setting high.

 

[kirk1978]

Interesting....I have no answers.

I also put together a budget Grendel with a Bear Creek barrel and have yet to take it out, hopefully mine shoots as well as yours.

.

 

[swampratt]

barrel whip could be the issue.
Watch this video and watch the harmonics at the end of the barrel. Brutal!

 

[MacFromOK]

Line of sight versus bore sight. It makes the trajectory seem like an arc.

A higher scope mount aims lower than a low mount (it has to point down more), so if you zero it close to the weapon, the bullet is still traveling upward in that perceived arc at a farther distance.

Lol, probably clear as mud...

 

[NikatKimber]

You just have to shoot it and see where you will be at.
I thought being on zero at 100 yards would have me lower at 200 and when I shot at 200 I was way high at 200. I then dropped to 3/4" low at 100 and that put me on at 200.. the math made no sense.
My scope was also setting high.

That's because it was still rising at 100 yards.

 

[swampratt]

I had a pellet rifle that hit on the money at 25 paces was 3" high at 40 and add another 3" high at 50 and a total of 9" at 75.

It was a winchester break barrel .177 cal I hated that thing.
Finally decided the barrel was bent in the upward direction so I bent it down
Finally had a flat shooting pellet rifle. Only pellet rifle I had that would send a pellet through a pine 2x4

 

[k4ylr]

Something worth noting. That scope is listed as having a BDC reticle, not a MIL or MOA reticle so you will have to figure out what each hold over mark corresponds to with whatever load your shooting since they aren't evenly spaced.

I ran a ballpark calc and if you zero'd at 50 yards, assuming 0.4BC and ~2600fps you would still need to come down ~1 MOA to be POA/POI at 100 yards. After that you'd go back to having to hold over about 3 MOA per 100 yards out.

 

[dlbleak]

I have yet to get my BCA barreled gun to the range. Is there a local source for the wolf ammo?