Ive asked a couple dealers about ordering a LH T3X Stainless Synthetic in 6.5x55. And Al's is right. The have all quoted 6-12 months for delivery.
Your best bet is to scour the EE? This is what I did to get a LH t3 in .338 Fed
Or buy a tikka for the action and then buy a stainless barrel in a caliber you want.