Preferred pellet weight and velocity chart

While the topic interests me as well, a generic chart would have very little benefit to most. The reason being that there are too many variables that will affect velocity such as barrel length, hammer spring strength, size of valve/transfer port, altitude, humidity/temperature, accuracy of the chronograph, number of shots fired, etc.

What would be more beneficial would be to establish a testing standard if possible, that manufactures would use when advertising their product. Again, problems arise as you can do a standard pellet weight/make for each caliber (.177 is lead 7.9 grain diabolo, .22 is lead 14.3 diabolo, etc.) but that is about it as each manufacture will have differences with port diameters, how the valve works, barrel length, and more. Unlike other testing such as IBO standards for bows that is able to set a specific draw length, arrow weight, and bow draw weight, air guns just don't have enough fixed variables that will allow for consistent results over a wide spectrum.

Hi Cayin, have you had a look at ChairGun Pro software from Hawke. Using empirical data from shooting your rifle it can provide very good ballistic data.

Protegimus