I wish I had chronograph, but I don't think they were over pressure. what would cause the bolt to be hard to open?
WSM, Winchester Short Magnum, a short/fat little case. The powder column is shorter than etc. The powder column is larger in diameter than etc., and for those two reasons I can only guess rleoaders believe the two difference have no effect on pressure.
From the beginning reloaders have struggles with everything like heavy bolt lift to the inability to size the case back top minimum length/full length sized,
And now I can not find the part where you were neck sizing. Neck sizing is a time factor thing. I reduce pressure by full length sizing, I also reduce pressure by refusing to seat the bullet into, near or off a few thousandths from the lands, because I am the fan of the running start, I want my bullets to have the 'jump start', do not get me wrong, I believe a lot of methods and techniques are cute, it just seems a case that causes the bolt difficulty in opening is trying to tell me something.
Tell me something? That is the reason I measure new cases before and again after firing, then again after sizing. Neck sizing, I was informed I was dealing in some risky stuff, rather than disagree I contacted Hodgdon, I explained what I had built, the cases, case forming process, powder and bullet and all the rational that went with my plan.
Hodgdon said ( I had already formed 40 cases) not a problem for all the reasons given but do not use the data for a starting load, the data could be beyond the maximum safe load after the case has been formed.
F. Guffey
The bolt lift is still a little stiff, but the case slides right out
Your case has jump back, snap back, memory or spring back, if the bolt is heavy to ligt the case filled the chamber, locked the bolt and did not remember what is was before you pulled the trigger.
All of my bolts have a cam back meaning when I lift the bolt the bolt moves back by design, when the bolt moves back it pulls the case back with it 'unless' the case has been hammered, the expanded case locks the bolt. After the bolt handle has been raised the case is no longer locked in the chamber, but if it is there is a chance the extractor can jump the case rim and or tare off a chunk, then it is possible the bolt will open with the case still locked in the chamber.
Correction" WSSM, not WSM. That makes it shorter and fatter.