I have a T8 threaded 9/16" by 24 UNEF. Same as the Browning BOSS system so probably suit Browning A-bolts etc....
Looking to swap it for one threaded 1/2" UNF.
Calibre is .25 but I will be happy with any calibre even down to .223
Prefer not to add any cash but it will cost me £35 to get the rifle threaded so don't mind jacking in that ammount for a swap.