the way Jay explained it the bolt had to be cut back to allow the probe to clear for the pellet dopping into the reciever area of the breech. When the pellet drops down it needs that extra room to work correctly. on my QB which the bolt hasn't been altered, it clears just fine, but if had the thin probe it might would just clip the end and not seat correctly, but than again it would depend on how long it was. I have seen some that were very long, leaving just enough room to place a pellet.
now as an extra benifit of the thin probe is better air flow, than that is a big plus.
cant wait to get it installed.
now all I need is a new trigger with mods from MikeT and better stock, hint, hint.
Buster
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one step closer to the ultimate goal
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