Panthera FX Bull barrel for Panthera

[Auto1191]

Well, I’d buy a .22 Panthera or Dynamic, but I spent the money on a super duper 3d printer.

I am sure with your Knoledge yon wii be 3 d printing just about anything you can think of. I another Hobby for yourself. good luck

 

[Powermonger1]

Yes you are 100% correct on this finding and the math absolutely supports it.

If you look up how to calculate the max Fpe of an Airgun (theoretically) the actual volume of the barrel absolute matters. For example the .30 cal 700mm has 31(ish)cc of volume and upgrading to the 800mm takes it up to 36(ish)cc or so.

For example I have an 80cc plenum in the works for my DRS. A straight swap will only yield about a 4% increase in power over the 63cc plenum so only about 4-7fpe more at the same settings.

Likewise dropping a 800mm barrel without increasing the plenum only yields like 5% more power due to the volume of the plenum not being big enough to prevent too much pressure drop.

The math says that by swapping both at the same time I should yield 149-150fpe with the same settings. That’s an 18% gain.

I love when the real world and the theoretical world match up as cleanly as this because my experience with my other gun projects tells me these numbers are pretty spot on. If anything, they might be slightly conservative since my karma barrel swap slightly over performed the math.

Did you get your power up with the photos I sent you and the specs I used to get the 250 ft lbs out of my Panthera and Dynamic?

 

[Auto1191]

Did you get your power up with the photos I sent you and the specs I used to get the 250 ft lbs out of my Panthera and Dynamic?

I am still waiting for my Panthera MK 2 .22 700 with Bull barrel from Dealer,. It's a long story. Now I am waiting for the Fox over the Barrel mod. A little over 6 months. Bull Barrel was A major se back. The .22 was a super long wait.

 

[Powermonger1]

I am still waiting for my Panthera MK 2 .22 700 with Bull barrel from Dealer,. It's a long story. Now I am waiting for the Fox over the Barrel mod. A little over 6 months. Bull Barrel was A major se back. The .22 was a super long wait.

Thought you were going to use it on your DRS? Was interested in your out come. Now that I found that I purchased 2 more of the hop up hammer springs, I was going to get to work on mine to get the 42 grainers at 900 fps + in .25

 

[Auto1191]

Thought you were going to use it on your DRS? Was interested in your out come. Now that I found that I purchased 2 more of the hop up hammer springs, I was going to get to work on mine to get the 42 grainers at 900 fps + in .25

I have a Drs as well .22 700, It to is @ Dealer, I am takiing it out of the Woodstock, putting ithe action in a CHASIS, either a ST chasis, or Deltaforce both on backorder. I am waiting for a .20 500 FX Barrel to stuff it into the Woodstock, that is to die for . It's that nice!

 

[Powermonger1]

I have a Drs as well .22 700, It to is @ Dealer, I am takiing it out of the Woodstock, putting ithe action in a CHASIS, either a ST chasis, or Deltaforce both on backorder. I am waiting for a .20 500 FX Barrel to stuff it into the Woodstock, that is to die for . It's that nice!

Most awesome stock I hope to see

 

[Auto1191]

Most awesome stock I hope to see

It seems like ,all that I do is weight