First time out to 200 yards with Panthera and Altaros

[CanMike]

Finally took her out long range. Unfortunately it was pretty windy but I am super happy with results.

920 FPS Altaros ATP King 40 grain in my panthera 22 700mm

130 on Reg

Mike

 

[Ranchibi]

That is very accurate at that distance especially in windy conditions in .22! Awesome groups!

 

[JackHughs]

Finally took her out long range. Unfortunately it was pretty windy but I am super happy with results.

920 FPS Altaros ATP King 40 grain in my panthera 22 700mm

130 on Reg

Mike

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I have a .22 700 Panthera so your post is of particular interest. I've been running the reg on my rifle at 145 Bar. When I shoot the 40 grain Altaros slugs at 930 fps, I get very good but inconsistent results at 100 yards. I think that the hammer strike needed to achieve 930 fps at 145 Bar is causing inconsistent dwell and I've been wondering whether it would be best to increase or decrease reg pressure to fix that issue.

Based on your success, I'm going to de-gas and start again at 130 Bar.

JackHughs

 

[CanMike]

You don’t need to de gas. Are you running over chrono. I suspect your hammer is too light. Causing speed fluctuations. Same happened to me when I was at 150 bar and tried dropping speed. My ES went up to like 20-25 FPS versus the 5-7 FPS it is now.

I find you need to well into the plateau to minimize speed variations from minor differences in hammer strike. Like 97-98% of max velocity at that ref pressure.

Mike

 

[JackHughs]

You don’t need to de gas. Are you running over chrono. I suspect your hammer is too light. Causing speed fluctuations. Same happened to me when I was at 150 bar and tried dropping speed. My ES went up to like 20-25 FPS versus the 5-7 FPS it is now.

I find you need to well into the plateau to minimize speed variations from minor differences in hammer strike. Like 97-98% of max velocity at that ref pressure.

Mike

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The issues you describe at 150 Bar are the same issues I'm having at 145 Bar. I will lower the reg pressure to 130 bar but this gun has a Huma reg. I do need to de-gas first - not a problem.

You're also spot-on regarding running on the plateau. For my rifle, I have to run close to the plateau to achieve very low ES and SD. Chrono is a Garmin.

Thanks for your help.

JackHughs

 

[Centercut]

I have a .22 700 Panthera so your post is of particular interest. I've been running the reg on my rifle at 145 Bar. When I shoot the 40 grain Altaros slugs at 930 fps, I get very good but inconsistent results at 100 yards. I think that the hammer strike needed to achieve 930 fps at 145 Bar is causing inconsistent dwell and I've been wondering whether it would be best to increase or decrease reg pressure to fix that issue.

Based on your success, I'm going to de-gas and start again at 130 Bar.

JackHughs

If you want accuracy and precision with the .22 Altaros King 40 grain, try 900-910 fps. You can thank me later….

 

[Crackez]

If you want accuracy and precision with the .22 Altaros King 40 grain, try 900-910 fps. You can thank me later….

How much reg for this velocity?
Asking; Did you check 938 fps, is good for me aswell with 147bar.
Any advice big sir?

 

[Ackley786]

The combination is considered a fantastic combination and is highly effective, incredible accuracy at these longer ranges.