The early rifles were not drilled and tapped and the dovetails are not tapered. The original mounts work well, but are heavy and too low for most 40mm objectives. I found early Warne QDs, and some redfield mounts that fit the untapped rifles. Also, some mounts are made in OZ. I have extra mags for all of my 55 and 65 model rifles and they don't come easy. Last .243 and .308 mags I saw went for north of $150, so don't lose one! I just picked up an extended magazine for a model 55 in .223 or .222 that hold 5-6 rounds. Now I have the mag, I need to find the rifle!
I have some on the way. If they don't fit I am tempted to just have four holes drilled and install some flat Warne bases like for a Marlin 336.
Yes, it is an old Tikka LSA and the dovetails are still 5/8" (16mm).
Very good rifle, and surprisingly accurate.
Added...it also means the Sako Tikka optiloks fit as well, they also fit BSA hunter and early Brno 22lr (1,2,3,4,5)
