Thread: Indexing muzzle brake of of crown/muzzle

So I have a rifle with a 7mm bore and a .560 muzzle diameter threaded to 1/2x28. I picked up a muzzle brake to fit and I notice the threads are not quite as tight (while doing it up seems fine once against the shoulder) as my other rifles that where specifically threaded to fit a specific muzzle device.

I'm curious about muzzle brakes that can index off the muzzle instead of a shoulder and whether this is an issue for accuracy.

Here are my concerns

• Not much meat left with a 1/2x28 thread on a 7mm bore.
• With the brake not being a snug fit I fell there's a lesser ability to resist the muzzle opening up.
• I'm not really wanting to chop the barrel but could suck up losing 15mm if it meant I could thread the barrel 9/16x24 with no shoulder and index of the muzzle.

I will offcourse (once we are out of lockdown) shoot the setup but we are locked down so thought may as well have a backup plan.