My sniper FPS is 440 with .20g bb is this allowed

The field FPS limit for bolt action snipers is 450 with a .25 weight BB. If your sniper is 440 FPS with a .20, a .25 BB will drop your FPS by approx. 30 - 40 fps, making your gun chrono in at approx 400 - 410. FYI - you need to be using a heavier BB than .20. The FPS limit for a bolt action sniper is 450

It will be allowed however it will probably have a 100 foot med

440 is too high, limit is 400. If you adjust hop up for .25 bio bb it may bring it down to 400 and it should be safe to use.