Author Topic: Gas check dislodging?  (Read 241 times)

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Offline mag41vance

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Gas check dislodging?
« on: March 25, 2005, 01:26:08 AM »
Question about a concern. I have some .360 sized GC LBT bullets for shooting in my .357max.
I crimp these in a Lee crimp die. It is somewhat difficult to ram the cartridge into the die because of the .360 bullet diameter. I have to exert quite a bit of force in order to get the bullet into the die. My concern is; Is it possible that the gas check could be forced off of the bullet inside the case due to the excessive pressure required to penetrate the die?
I believe this die must have an ID of around .362” at the collar which is pinching the case in effect resizing the cartridge.

What are your thoughts on this theory / concern?
no x now!

Offline Chuck White

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Gas check dislodging?
« Reply #1 on: March 25, 2005, 03:52:04 AM »
I don't think so, because you have the bullet and gas check being forced up into the seater die by the mouth of the case!  It also makes a difference, depending on the type of gas check you are using!  Some gc's just sit on the base of the bullet, while others like Hornady are actually crimped into the base of the bullet!

When you reach your seating depth, just crimp the mouth of the case and you should be good to go!

Bottle necked rounds "could" be a different issue, where they are so much larger diameter once you get past the neck!
Chuck White
USAF Retired, Life Member, NRA & NAHC
Don't matter what gun you use,
just get good with it!