Hello, Dugongberbulu:
I too like driven hunts of boars, in Spain and East Europe. I have a nice Belgian 450 BPE loaded with 350 grains Hornadys and Woodleighs and at 2100 fps I can assure it is more than enough for the task. At the present time I am experimenting with Cast Performance 405 grains very flat point lead bullets. At 2000 fps, the rifle regulates fairly well, and I am sure it will be a nice thumper on boars. Recoil is easily manageable, even in my ultralight 6,5 pounds double.
I think the .450 is a fantastic caliber, and usually it will take good and inexpensive .458 bullets.

Good luck

Antonio, Spain.