A Little question

My calipers died.

If you want it more precise then divide circumference by this!

1594670043_1356183905f0cbbdbb90e46.65721703.png



 
A factory CF FX 480cc? 
Let me know because the 500cc Luxfer 3600 bottle I have is a smidge to fat for my 0.753" barrel to lay flat. It's a 29" SS heavy barrel so the slight incline I get adds distance and support for the Elite block. I mean it holds it with a FX extra long skinny tube but now that I tried a CF bottle ( seen on Royal .22 400) It's a catch 22. There's pluses to both. 

I believe they're 2.401575" or 6.1cm

I have seen tanks that are 5.5cm on Fleabay

1594684017_9894062045f0cf2717c15d1.56256808.jpeg

1594683407_20038233005f0cf00f3aae31.56682697.jpeg
1594683408_19801397925f0cf010dcb877.59023196.jpeg