Clearly, the answer is "whenever I want to". But the question is more like "How fast will it continue to loose accuracy?" When new, the Walther barrel shot like .25 inches; and now its up to like .8 inches.
.8 inches is good for now, but when it gets up to 1.25 inches @100 yards I will want a new barrel. Is there a formula that will tell me when that will be?
.8 inches is good for now, but when it gets up to 1.25 inches @100 yards I will want a new barrel. Is there a formula that will tell me when that will be?
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