SmallCaliberCentral

On occasion when seating the bullet on my 204 the shoulder gives way causing the case to bulge. I had 3 rounds do that so far. One was Hornady brass two were on Winchester Brass.
OAL with 39gr Sierra BlitzKings is 2.258 to 2.261.

Any help would be appreciated.

JDB

Most likely your using a standard seating die with a roll crimp feature built in.
Back your seater out of the press another half a turn and try again.

Thanks Jo

Using the Lee Dies, I will give this a shot.

Also on seating depth, When I test loaded a bullet to check the rifling marks. Odd thing is seating depth done in this matter is exactly 2.260. Does my Rifle just happen to match the Max OAL. Or did I do the measurments wrong?


Thanks.

Disregard the OAL question. I mulled it over in my head about 30 times wondering what I was doing wrong and it hit me. I will do the measurment again. Most Likely with Much different results.