> Here's some useful information on minimum & maximum pellet weights that can be used in Spring Piston Air Rifles...
MIN & MAX PELLET WEIGHTS SUITABLE FOR AIR RIFLES
If you look closely, many of the advertised velocities claim “Up to 1000 fps” or whatever. It is important to understand that when they do their promotional advertising and testing, they use very light pellets usually weighing 6gr or less, sometimes as little as 5 gr. Using pellets that light will usually provide the advertised/claimed velocities. However, when using a “standard” weight pellet of 7.9gr to 8.3gr or maybe even heavier, the velocity drops dramatically. That is to be expected.
INFO REGARDING THE DIFFERENT PELLETS AND THEIR USE:
I suggest that you do not use light pellets in your gun. Shooting light pellets can be very hard on you gun internally, hard on the spring and seal and usually cause the gun to shoot very harshly. It can be almost like dry firing your spring piston AR when really light pellets like PBA’s are used.
By the same token, do not use heavy pellets in your gun, they can and will sometimes cause severe damage to the main spring in Springer Guns. They can cause damage and detonation. This can and will cause spring fatigue and spring destruction beginning with just a few shots and when disassembled, the damage caused by heavy pellets and detonation is easily detected and identifiable. The spring failure is not the fault of the spring but spring abuse. Use heavy pellets at your own risk and expense.
FOR THE LONGEVITY OF YOUR SPRING GUN:
My suggestions are for .177 caliber gun that the minimum pellet weight should be 6.9 grains and the maximum pellet weight should be 9 grains.
For .22 caliber gun that the minimum pellet weight should be about 13.5 grains and the maximum pellet weight should be about 15 grains.
Bob Werner aka: CharlieDaTuna
(He is a well known & respected AR tuner in USA)
Happy Shooting!
Briha
