I have a 'claw extractor' type of casing ejector and this is a very accurate rifle (in 308) even out to 1,000 yards. I also have a Sig Sauer Tactical 2 Blaser in 338 Lapua. Now this rifle has a spring loaded 'button' on the bolt face that puts pressure on the cartridge (even when it's chambered) and I'm sure that causes the casing to shift slightly from off center. Has anyone ever removed the spring behind that 'button' or just removed the button completely from the bolt face? Would doing so cause any problemswith firing? Any guidance would be appreciated. Thank you so much.