Short answer is yes, long answer is no. If you don't know the starting bore diameter, you can't get the constriction, which determines choke. However, Parker bore sizes are probably listed somewhere on this forum. Additionally, just because a gun has a certain restriction, doesn't mean it will shoot a certain pattern. The only way to truly know what the choke (% of pellets in a 30" circle at 40 yds) is to shoot the gun.
However if you are at a gun show and are considering buying a gun, a mike will go a long way in getting you where you want to be.
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David B.
"The one absolutely unselfish friend that man can have in this selfish world---the one that never deserts him, the one that never proves ungrateful or treacherous---is his dog."
Last edited by David Borrowman; 09-23-2010 at 05:37 PM..
Reason: missspelled word
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