Depends on the Ogive of the projectile if the bullet is seated in the case so it is just the start of the ogive that contacts the muzzle then it may not give a true indication of ME it really is a bush hack, if your really keen on the rifle ask them if they could get it to a gunsmith with a TE/ME gauges or post a pic here and see what the forum says over all pictures and close ups of the action receiver muzzle etc always helps with a fair estimation.
But as always the experts here without handling the rifle can only go on what they see in the pictures.
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