I did the Berger VLD seating depth test and found a .090 jump was best in my rifle. I have a short freebore, so a .090 jump puts CBTO at 2.0425 (~2.800 COAL). I did my charge weight testing today and while I had some amazingly consistent and very accuraye loads, they were SLOOOWWW. About 75-100 fps slower than comparable loads from others shooting the same cartridge/barrel mfg/ bullet/powder/primer
So my question is, would a stuffed bullet (it is very much in the powder column) reduce velocity even though the charge is the same as others that dramatically?
If no, either my scale or Chrono is lying to me, or I just have a slow barrel.
Details:
7mm Sherman short
Adg brass
180gr Berger VLD hunting
62.4 h1000 = 2835 fps ( es 8, SD 4.6)
Compressed load, loaded with drop tube
Note: I do plan to rework this load (or go with a 175gr Berger), but this load is going be the load for a mulie hunt next week, so I'm not looking for an overnight solution , just some thoughts from those more experienced than me.
Thanks for any insight
So my question is, would a stuffed bullet (it is very much in the powder column) reduce velocity even though the charge is the same as others that dramatically?
If no, either my scale or Chrono is lying to me, or I just have a slow barrel.
Details:
7mm Sherman short
Adg brass
180gr Berger VLD hunting
62.4 h1000 = 2835 fps ( es 8, SD 4.6)
Compressed load, loaded with drop tube
Note: I do plan to rework this load (or go with a 175gr Berger), but this load is going be the load for a mulie hunt next week, so I'm not looking for an overnight solution , just some thoughts from those more experienced than me.
Thanks for any insight