Fired cartridges

You may have a problem!

A load I did for a friend, 57gr IMR4350. 165gr Accubond = 2856fps.
Maybe you got the pointy end of the bullet going the wrong way...it should point OUT!
 
blargon said:
I think low pressure is your culprit...

Try out the Varget and get back to us...:)

Min load is 53.5, max is 57.5, and running at 3400fps...

QUOTE]

Pressure is too low. What is happening is the strike of the firing pin pushes the loaded round into the chamber as far forward as it can go, then the expanding gases cause the body of the case to adhere to the chamber walls. Since the pressure is not high enough to force the head of the case back against the boltface, there is a small amount of clearance between the boltface and the back of the cartridge case. Pressure is sufficient to move the primer back a few thousandths to stop against the boltface. When you eject the fired case, the primer is sticking out of the case enough to see and feel. Proper chamber pressures eliminates this issue. Regards, Eagleye.
Click to expand...
 
57 grains of IMR4350 should be giving you more velocity than that. Check your powder thrower. Pull a few rounds and weigh the charges. I'd almost bet you don't have 57 grains in there.
My old Lyman book gives 55.0(2754fps) to 61.0c(3105fps) of IMR4350 for a 125 grain bullet.
You don't need magnum primers either.
 
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