Bore rider, stepped, plus p throatings

[Alex Wheeler]

Whatever you want to call it, has anyone done a before and after test? I am going to chamber a 338 rum and do a before and after test. I am going to go in with a 334 throater and do some pressure testing. Was just looking for some other data to compare.

 

[SHootSTraight22]

Whatever you want to call it, has anyone done a before and after test? I am going to chamber a 338 rum and do a before and after test. I am going to go in with a 334 throater and do some pressure testing. Was just looking for some other data to compare.

I don't know much about medal working so I ask, what exactly are you talking about here?? Are you saying your thinking about throating the 338 chamber/throat .001 wider in hopes of getting lower initial pressure curve resulting in you being able to load hotter loads?? You say "plus p??" Just trying to learn...

 

[Alex Wheeler]

As far as I know the first reamers were made by JGS for 50 BMGs. You basically go in with a throater that cuts away half of the lands then tapers in. So you have 2 throats in a way. It reduces the initial pressure. Lou Murdica has been using one in a ppc and doing well. Alot of the long range hunters are using it as well. I have a 338 Rum reamer throated to fit a 250 hrbrid in a wyatts box, and want to test different legths of the bore rider throat.

 

[wboggs]

What is your throat on the 250 Hybrid reamer and what OAL are you loading them?

 

[rickiesrevenge]

I'm curious to see what you find. Been thinking about a 330 dakota with a throat like that.

Aaron