As others have said and I agree. Find a local smith give him your ideas and goals then see what he says. He may not want to thread a 30cal down to 1/2x28 and he may propose a cut-off idea like
@Bang4theBuck to get more meat to thread onto. Thinking ahead for suppressors is also a great idea because you will own one eventually if you're already looking at brakes and their benefits (especially terminators).
Those terminators brakes are awesome on recoil. Rough on the concussion and ears, you have to wear double ear protection and shooting without ear-protection while hunting is really bad-saying from experience.
Shooting and learning a lightweight 30wm is gonna be like taming the Sandlot hound for awhile. If you have the funds for another rifle, I'd suggest one of the same model but in a short action cartridge and maybe even a 223rem. Good practice rifle on the range, great for predators/small game and you can go through the motions with a rifle that is overall "less" of a
Welcome to LRH, and enjoy! Yes, it can be threaded for a muzzle brake. Do you have a gunsmith near you, or will you ship it? One of my .300 WM (not a Tikka) has a thin barrel, .625" at the muzzle, with a 1/2-28" thread for a muzzle brake. Depending on the reputable gunsmith, he can build an adapter/shoulder and thread it for 5/8-24" like in the video.
Some thin barrels threaded in 1/2-28" ...
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.300 WM with QD muzzle brake by Holland (my first MB was done in 2003).
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.30 Gibbs with Ross Schuler brake.
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7MM SAUM with muzzle bake and more 4-port little beast brake.
how is hunting with the muzzle? Can I ask the hearing protection you use, I want to be able to take my gun pit but I've heard so many stories about people ruining their hearing because they couldn't get their protection on before the shot.