On a pix… you can nat all inside addresses to a range of public IPs… and when that range runs out, it uses the last IP for pat. One line of config gives the range (two or more addresses) and a second line gives a single address… private addresses are translated 1:1 as they go out until all the addresses in the range are used - after that, all connections are translated with pat, using the last address.
I have a range of addresses to use for NAT/PAT - about 8 of them… and I have about 25 users with private IPs. Rather than use one address and PAT… I want to use 1:1 until the addresses run out. Will this happen automatically?
If I put my 8 ips in the translate to field with action=srcnat… will it work the way I think it will?
The documentation is not clear on this, so I thought I would post here. and yes, I do know that experimentation would show me… but this is production and I have a million other things to do. 
Peace!