caveman,
Several things.
I would shop around for the M41. As others have said, it is a great target shooter. I have the 7" barrel personally but the 5.5 ok. As others have also said, having the 7" cut to approx. 6" to use with a red dot sometime in the future is something you may want to consider. However, either way, you can buy replacement barels for this gun. One other kudo for the M41, I would never sell mine, it is the only gun that I own that I will not part with.
I have very limited bullseye experience. Having said that, I have never seen a sig, benelli or kimber used in this particular competition. But thats just my experience. You will see some Rugers, some Brownings, High Standards (used by some of the old timers), Walthers (and that Russian made gun simular to the Walthers) and Hammerlis. Basically I second what Master Blaster has said. As mentioned, the Rugers MK IIs have to be worked on to be compeditive and this costs money. You can go right into bullseye competition with an M41 right out of the box. Mine is a little fussy about ammo, it hates CCI. It loves Eley target pistol which is expensive but I get good results with Remington std velocity 22 target available at wally world. I would not use high velocity ammo in mine, there is some contraversy about this but there is nothing to gain in my opinion by using HV so I only use std. velocity.
I'm very confused on the sales tax issue. You will be paying for the gun, your FFL is only doing the transfer. Ask another FFL to complete the transfer.
Check out gunsamerica.com, there are many M41s for sale there.
Tom