Nitrogen for FX Impact?

Hey guys. I had a good search but can't find any related chats on here. I have access to lower pressure scuba compressor here but have to pump the rest of the way up by hand. I'm a fair way from the coast here and high pressure nitrogen is more readily available than compressors. Can nitrogen be safely used in the Impacts? Will it affect settings/velocities etc. at all? I'm kind of filling in time until I get more mates involved in the sport so we can share a good quality 4500psi compressor. They'll come around. ?
 
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This is exactly what you need .