-
I realize this a late reply
MartinJ – Beretta (Tika) is not interested in dealing with handloads – in fact mentioning handloads may void your warranty if you send it in (tho im not sure).You have some options since all Tikkas are basically long action.
The .260 is a short action cartridge (like the .308 win), but the action can handle up to 300WM. Get a long action bolt stop ( or grind the short one you have see youtube) and use 30-06 mags for your .260 if you want to use longer OAL cartridges.
Not a perfect solution but this is one option that will fix your problem.
