07-08-2013, 09:30 PM
Pretty clear your bullets are jamming into the throat/lands and something is out of spec.
Slit 2 sides of a new/sized piece of brass with a dremel,stick a bullet in and push the round in with a dowel until it stops.
Then with a coated rod from the muzzle..lightly tap the case/bullet out and measure you OAL.
This will determine your bullet to lands distance.
There is a thread here on how to make a case for this..works slick.
Typically you want .015-.020 jump,anything less and trouble can happen when the throat gets dirty,especially with an auto loader.Also the Grendel's double throat loves to grab and hang on to bullets too.
If the OAL isway long then you can prove to mcgowen that the chamber is out.
Slit 2 sides of a new/sized piece of brass with a dremel,stick a bullet in and push the round in with a dowel until it stops.
Then with a coated rod from the muzzle..lightly tap the case/bullet out and measure you OAL.
This will determine your bullet to lands distance.
There is a thread here on how to make a case for this..works slick.
Typically you want .015-.020 jump,anything less and trouble can happen when the throat gets dirty,especially with an auto loader.Also the Grendel's double throat loves to grab and hang on to bullets too.
If the OAL isway long then you can prove to mcgowen that the chamber is out.