Bore scope or bore light, after the weapon is unloaded an bolt remove/locked open.
this answer is correct but there is an easier way, take the bolt out and look at the end, make sure there is no burnt, gouged or blistered metal on the end of the bolt (the end where the firing pin is ) if there is , this indicates an over pressure of the barrel, do not buy it! also look at the muzzle to make sure the hole is round with no chips or flat spots, (if present this can be fixed), look down the barrel , if the rifling is barley visible they are worn , and the easiest way to check the rifling is to take a bullet of the same caliber as the gun put the bullet into the end of the muzzle if the whole bullet lead slips into the muzzle end the rifling's are worn out, if the bullet does not go all the way in they are good, baring none of the other things listed are present. i would buy the weapon
depending on condition and bore, Mint means like out of the box new condition with no dings and mint bore. I would think $ 300 to $550. depending on the market. Check some of the web sites for list prices. The 257 Roberts is a wanted rifle for collectors.
the bore looks similar in quality to "mirror" in respect to condition except that it is not shiny. Has a dull appearance to it. This is invariably due to lack of timely cleaning after the rifle has been fired with corrosive primed ammunition. Bore has kind of a sand blasted appearance.
It all depends on the condition of the rifle ie. blueing, stock, bore. Any where from $250 to $400.
Not without a DETAILED description of ALL markings, condition, etc..
have a gunsmith do this, push a slug of close dia through the rifle, and micrometer the bullet. this will give the true bore size.
Between 300-900 dollars,depending on the original condition remaining on your rifle,and the condition of its bore.
I think you mean Australian, not Austrian. Anywhere from $100-$250, depending on condition, orginality, and condition of the bore.
bore
The value is between 250-450 dollars,depending on overall condition of your rifle and a good bore.
From 200-350 dollars,depending on overall condition of the rifle and a good bore.
Between 350-550 dollars,depending on overall condition and a good bore.
50-95 dollars depending on condition and a good bore.