Hi,
The only model from our thread mounting suppressors that is officially magnum rated is the SL7i .300 / .338 model.
The older SL7 .30 calibre variant was magnum approved and so were also the pre-2013 jet-Z COMPACT models.
As we were in the product update process towards the i-models in in the S series during 2016, we tested the lightened SL7i .30 calibre model quite heavily with a shorter 20” barrel .300 Win Mag.
In longer firing strings, there was very minimal/neglible bending on the first baffles, which may not have been noticed by the customer necessarily.
However as we cannot always control how and on what weapon & barrel length the suppressors are used, we usually opt for the safe side.
So, that it why there is now a combined magnum model and the SL7i .30 is only for non-magnum calibres.
The material on the magnum model is also even stronger ( we shot a 50 round string of .338 Lapua through it with a short barrel )
S Series SL7i sound suppressor | Ase Utra
So it is not the lightest for magnum calibres but extremely robust with a fully welded stainless steel design and available with Cerakote finish also.
Also still a pretty compact suppressor.
Do note that there is a considerable difference between .308 / .30-06 and for example a .300 Win Mag in muzzle pressures
From a 500 mm barrel it is c. 500 bar for a .308 Win and c. 900 bar for .300 WM.
So when purchasing, I would advise to inquire from the manufacturer, on how their products have been tested on magnum calibres.
Best Regards!
Tuukka Jokinen
Ase Utra sound suppressors
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