Savage 10FCP extended Magazine???

I have a 10FCP in 308 and it will shortly be a 260Rem. It has a DBM but it will only hold 4. This summer I am planning on shooting and local practical match where we will have 3 minutes to engage 6 targets from 175 to 700 yards. With ranging and calculations this doesn't leave me much time for reloading etc... Does Savage or an aftermarket company make an extended mag that will hold 6? I wouldn't think that it would stick out the bottom far enough to cause any problems.

I also am by myself in terms of carrying equipment so I would prefer not to have to carry two mags. As much as I can strip the better off I will be. Any ideas?

Sharpshootersupply.com has hi cap mags...they hold 9 rds. Got one for my 10FCP and it works great.

Not sure if the .308 mag will work. call them and ask. I believe it should as the .260 is based on the .308 rd.