Had a guy in my league tonight say he was gonna throw his 2"pin ball. What is the difference between it and a 4 to 5 inch pin on a ball. In terms of hook and reaction and where you would use one.
What is being presented to you is, there are different things that could be covered under the remark “two inch pinâ€, depending on the context.
On an undrilled ball, it is said to be a “two inch pin†if the locator pin is approximately 2 inches from the center of gravity mark.
On a drilled ball, it USUALLY means a ball drilled with the locator pin approximately 2 inches from the bowlers positive axis point. That depends on whether the person using the term actually understands it himself.
As notclay has pointed out, a ball drilled in that manner is considered a control type ball, and is often used when a bowler desires to get a smoother overall, more predictable reaction due to spotty or over/under conditions.
A 4-5 inch pin drilling ball would tend to get more length and more reaction later down the lane than a 2 inch pin drilling.
