Well broderick...U can get copper BB's for da e-lectric neat gun but they could more than hurt a little varmint:)
I gots a 243 cal.
Bout da 22-250................
The two most popular calibers for varmint rifles are the 223 Remington and the 22-250.
The 223 pushes a 50 grain bullet about 3200 fps while the 22-250 pushes the same 50 grain bullet up to about 3750 fps.
There have always been folks who prefer light-weight varmint rifles, sometimes refered to as "walking around" rifles. These are usually standard weight rifles in varmint calibers. All of the manufactuers now produce medium and light-weight rifles in varmint calibers, but the choices are somewhat limited. I looked for a standard weiht stainless/synthetic model and could not find one in 223 or 22-250. A great dual purpose caliber like the .243 Winchester, 6mm Remington, or 240 Weatherby may be just what the doctor ordered for most of us between deer seasons varmint hunters.