Just a suggestion, the Harris bipod is not your friend when it comes to shooting good groups. The Harris seems to add some degree of bounce that you do not experience with the Atlas bipod.

Myself and about six to eight others have been shooting long range 22LR matches throughout the spring/summer/fall for the past two years with targets out to 300-yards. Shooting prone off of a shooting mat with a rubberized front section, the Harris bipod can be "loaded" with shoulder pressure and the bounce factor seems to be minimized, the Atlas doesn't seem to need the preloading. However, when shooting off bare concrete the Harris rest slides and the bounce is there.

I also have a BR-50 Cooper benchrest rifle (no longer a competitive rifle in BR circles) and it is much easier to shoot off of a Bald Eagle front rest than any bipod.

Lots of good info in this thread...

Bill Calfee's book is still available on Amazon.

Last edited by CraigD; 10/09/19.