Right ive just brought a air gun pistol it's says the power of it is 3 joule I have 4.5mm STEEL bbs for it to. Is this powerful for a bb gun?
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http://www.beemans.net/airgun%20ballisti…
A 4.5 mm steel bb has a mass of about 0.32 grams. At 3 joules, we're talking about a muzzle velocity of about 140 m/s, which translates to about 460 fps. As I understand it, that's about mid-range for airgun muzzle velocities. Of course, there's a lot more to it than that. Have a look at the article if you're interested.
A 4.5 mm steel bb has a mass of about 0.32 grams. At 3 joules, we're talking about a muzzle velocity of about 140 m/s, which translates to about 460 fps. As I understand it, that's about mid-range for airgun muzzle velocities. Of course, there's a lot more to it than that. Have a look at the article if you're interested.