Help needed with load.

[Mtstalker]

I might look into that. It could be a simple solution.

 

[Mtstalker]

That extra 2 grains of case capacity put your pressures a little over max at 62.7K which is very doable. The OBT is a little off but from what you are saying I would do seating depth testing at this charge and see if you can't tighten up the groups a little more.

2 less grains of capacity than normal? Or it holds 2 more than normal? And what is OBT?

 

[DHuffman]

Your primers look very good I would shoot it and work on seating depth.

 

[Mtstalker]

Your primers look very good I would shoot it and work on seating depth.

I cant go any deeper due to falling out of the accuracy range. Any longer they dont fit in the mag. Also its already compressed so i dont want to go deeper and raise anymore pressure. I am plum happy with the groups as most shots are 300yds and under for its use. I just wanted to get a idea of what u guys though. And i much appreciate it. Now as far as the 62.7k psi that quickload has as over pressure shouldnt it be over pressure if above 64k psi? Im sorry if it sounds stupid but i have yet to use it and understand it in depth.

 

[mike a]

I agree that your groups are good enough now. If you had to drop the charge weight a bit, they are way off. I was just asking if a tuner might be a good solution for this rifle? I've never had experience with one. I was hoping a forum member that uses them might weigh in. Harrell's sells tuner brakes quite reasonable. Might be an option?

I put a Harrell's tuner brake on my lightweight 308 deer rifle. Tuner and brake both did there job BUT, noise is extreme! I needed foamy plugs under muffs. Even my neighbor at the next bench was giving me the stink eye. Not for hunting. Mike A

 

[timeout]

I put a Harrell's tuner brake on my lightweight 308 deer rifle. Tuner and brake both did there job BUT, noise is extreme! I needed foamy plugs under muffs. Even my neighbor at the next bench was giving me the stink eye. Not for hunting. Mike A

I have brakes on all my hunting rifles. Electronic muffs good enough for me on occasional shot. Wrecked my ears shooting a short barrel 243 without brake from my walk out garage door. Of course no ear protection on. My ears have ringing ever since! Oh well, at my age it's not the end of the world. Have my own shooting range so I can double up on ear protection and no one there to complain. Any guests there are free of charge, so I'm not anticipating complaints.

 

[DHuffman]

I cant go any deeper due to falling out of the accuracy range. Any longer they dont fit in the mag. Also its already compressed so i dont want to go deeper and raise anymore pressure. I am plum happy with the groups as most shots are 300yds and under for its use. I just wanted to get a idea of what u guys though. And i much appreciate it. Now as far as the 62.7k psi that quickload has as over pressure shouldnt it be over pressure if above 64k psi? Im sorry if it sounds stupid but i have yet to use it and understand it in depth.

From the looks of the primers I wouldn't be afraid to seat deeper .003 at a time anther .012-.015

Have you done any seating depth testing or did you just go with mag length?

 

[Mtstalker]

i have run it down .030" shorter in increments of .005" and pressure went up flat primers and accuracy fell off about .010" shorter. 3 shots measure .250" center to center. pretty good for a factory gun.

 

[Zero333]

If this is a hunting rifle and will not likely be shot much in very hot weather, I would not worry about it.

 

[DHuffman]

i have run it down .030" shorter in increments of .005" and pressure went up flat primers and accuracy fell off about .010" shorter. 3 shots measure .250" center to center. pretty good for a factory gun.

Sounds like you're there then. I'd shoot it.

 

[rifleman700]

I cant go any deeper due to falling out of the accuracy range. Any longer they dont fit in the mag. Also its already compressed so i dont want to go deeper and raise anymore pressure. I am plum happy with the groups as most shots are 300yds and under for its use. I just wanted to get a idea of what u guys though. And i much appreciate it. Now as far as the 62.7k psi that quickload has as over pressure shouldnt it be over pressure if above 64k psi? Im sorry if it sounds stupid but i have yet to use it and understand it in depth.

PMAX for the 338 WM is 62,366 psi.

 

[rifleman700]

2 less grains of capacity than normal? Or it holds 2 more than normal? And what is OBT?

Your case capacity holds two more grains than the QL default. OBT is Optimum Barrel Timing and it is based on your barrel length and the powder burn rate and bullet combo.