22 creed

[75vmax]

.250

 

[SBS]

.250

If your chamber has a .250 neck and your loaded rounds have a .250 neck..... no room to expand causes high pressure and the reason why your bullets won't drop in a fired case neck. Try .001" clearance on a side, meaning a .248 loaded neck diameter.

 

[AlNyhus]

.250

If your chamber neck diameter is .250 and a loaded round measures .250....you're going to have pressure issues. -Al