Hello and good morning to all forum members,my name is adi. I have been using the BS 4 since November 2022 on the following sporting weapons:1. Unique Alpine TPG-1 / 300 Win Mag. In the absence of a picatinny rail, the BS 4 was mounted on a small tripod.2. Unique Alpine UPG-1 / .308 Win with BS 4 on Picatinny at the forend at 6 o'clock3. SIG SAPR 751 / .308 with BS 4 on Picatinny at the forend at 3 o'clock4. AS. H Walküre / .308 Win on Picatinny at the foreend at 6 o'clock5. Pistol HK Mark 23 to Picatinny adapter at 6 o'clockThere were no notable problems with any sporting weapons. Finally, I have an ecellent tool to control uniformity of the reloading workflow.