Velocity out of the box with .177 Marauder

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L

Lightload

Member
Jul 4, 2019
37
2
PA, United States
Anyone have an idea what the typical velocity is from the factory for a .177 Marauder rifle?

With the 8gr Polymags @2850 psi my Chrony is showing 1045fps. With 10.3's @2500psi it's showing 950fps. My chronograph is a bit suspect. It's working perfectly as it has for the last 22 years but recently I've seen signs that it may be indicating speeds that are higher than they actually are.

Are the velocities I'm getting in the ball park for a new rifle?
 
If you don't have a buddy with a different crony that you could barrow to double check your numbers you could use an app like Strelok Pro, sighting in at one distance and measuring the drop to a farther distance and see what it says. 

Good luck John C 

1587914775_1080814745ea5a817c995e2.53033426.png

 
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If you don't have a buddy with a different crony that you could barrow to double check your numbers you could use an app like Strelok Pro, sighting in at one distance and measuring the drop to a farther distance and see what it says. 

Good luck John C 

1587914775_1080814745ea5a817c995e2.53033426.png
Click to expand...

That's how I became suspicious of my chrony to start with. I do a lot of shooting out to 1,000yds and the trajectories I was getting on paper didn't match up with what I should have been getting with my chrony readings. It seemed like it was reading about 10% higher than it should of.

I've got buddies with chronograph so I'll double check with theirs.

Thanks a lot for the input guys! Much appreciated!
 
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