Home Forums Hunting & Shooting Hunting Optics Does the nitrogen really leak out of scopes in about a year?

I asked Barsness about that and that's not what he recommends now or in the Optics book he wrote. I don't see why you would do that unless you hunt in temp's of 140 degrees. John told me he dunks scopes in warm water (comfortable to the touch) for 30 seconds or so.