After listening to a couple podcasts and hearing on the hide how the Harris bipod is the lowest common denominator, I decided to check out my two Harris bi pods one is the 6 x 9 the other is the 9 x 13 believe. The 6 x 9 is .300 +\- to the right and the 9 x 13 is .700+ or minus to the left of center line for the rifle. I was kind of shocked I was kind of shocked. But I now realize why my Rifle bounces to the right when fired. Interestingly not my Percision heavy rifles, but my light weight hunting rifles.