Originally Posted by yawn
I just see more questions
J E CUSTOM have you actually tried the two different ai Gage's in the one saami chamber to prove the difference? ie refute the argument put forward in the video and preceding description ?
Given PO ackleys intention was to use a head space .004 shorter than the parent case so wouldn't using standard 280 rem in a saami create an .018 crush? Iv found .018 over length is significant when trying to close the bolt? Also I believe the original design was using a head space datum on the neck shoulder junction?
while according to the saami drawing for the chamber its clearly back along the 40 deg shoulder a little.
In answer to your question , have I used both go gages NO.
I don't intend to because I chamber and head space the "OLD" way and have ZERO problems with head space, fire forming, case head separation and accuracy. so why would I change? all of the 280 AIs I
have built will shoot 1/2 MOA during fire forming with most factory ammo. and case life is excellent.
I have however had some of the owners of my 280 AI try the Nosler ammo with less than stellar results
and gone back to the Remington, Winchester, Federal, Hornady and any other brands with no problems
.018 crush ? Not if you chamber using the old 280 go gage I head space with little or no head space so fire forming is simple.
J E CUSTOM