I have been shooting a new bonded tipped bullet in my 15.75" center-grip 308 Winchester, XP-100 for a upcoming antelope hunt.
Speer of all things...172 grain Impact bullet.
With a chosen load and seated deep I still shot around half MOA off of a Harris bipod and small field bag, and it shot...
Have the throats been uniformed?
Grouping at 25 yards?
Try several groups with all 3-shots or all 6-shots from the same cylinder-Mark it with a sharpie to make sure you are using the same one.
Curious as to what that brings you in terms of accuracy.
The way we did load development when I was doing my 500 yard 357 magnum steel goal, was chronoing our loads changing the crimp tension until we got into single digits. Thinking we might have used the lee crimp die...That has been a minute since we did that.
How are your groups on paper at 100...
The only 338 that I have used, was a 338 AX (338 Lapua Improved-Raised the shoulder and shortened the neck). Center-Grip XP-100
I ran 300 grain SMK’s just under 2700 FPS.
It had an 18 inch barrel. It was too heavy to practically take hunting, and it was too light to do sustained shooting for...
I can handle recoil, but I would prefer to not have to deal with it.
Especially when you shoot from weird field positions, a lighter kicking rig lets you get by with stuff, you can't do safely with a heavy kicker.
Even though they are loud, I wear really good hearing protection and I use some of...
You guys are welcome to go to archery and flintlocks 😇 ...I do hunt with a bow every once in awhile, but I am going to hunting with center-fire weapons, primarily various handguns.