What Crosman/Benjamin bolts are these?

[mackeral5]

Alright, I just measured from the muzzle end of the probe to the center of the cocking lug is 1.375". If I recall they did have an older design that was shorter, there were some posts about subpar muzzle energy because pellets were blocking the barrel port.

Both of these measure 1.375 from tip of probe to center of cocking lug. 

I too recall the posts of BNM breech velocity issues related to probe/seating depth.

[Rick67]

It seems the mystery has been solved 

Mr. Dmeguy might purchase that from you then