Went back to the range this evening to run through the other 25 cases and did some seating & neck tension testing at 200yds, while forming the brass.
This is kinda reverse from how I usually test but just trying to rough in a load for the rifle for hunting this weekend.
My plan is to shoot it at distances, after season ends.
The barrel’s showing almost no copper fouling now but is still pretty solid on velocity numbers and hasn’t started jumping, like it’s wanting to speed up but only has 50 rounds through it so far (At 57.0 of H4350, it’s avg 2702fps).
Since this barrel is new, I decided to clean it after the first 11 rounds used for seating, and ran the last 14 for neck tension testing.
I wanted a little more magnification also so switched out the 22X NXS with a Golden Eagle and had to get back on target with the first shot.
I tested -18off the first go so decided to do -15, -21, & -24 off this time.
The rounds used for neck tension were loaded long so I could adjust, at the rang, to whatever looked best from the seating test. I went with -21 but probably should have went back to -18K since it had a better shape and was a little tighter.
I ran backwards from 5, 4, 3, & 2K tension. My groups last week & the seating test today were at 1K.
Looking at the targets, 1, 4, &5K looked good so I’ll start with -18 off at 4or5K tension, BR2’s.
I’ll run up to pressure with H4350, RL16 & maybe RL 15.5, and start shooting groups with the powder that looks good and gives the best numbers.
This is kinda reverse from how I usually test but just trying to rough in a load for the rifle for hunting this weekend.
My plan is to shoot it at distances, after season ends.
The barrel’s showing almost no copper fouling now but is still pretty solid on velocity numbers and hasn’t started jumping, like it’s wanting to speed up but only has 50 rounds through it so far (At 57.0 of H4350, it’s avg 2702fps).
Since this barrel is new, I decided to clean it after the first 11 rounds used for seating, and ran the last 14 for neck tension testing.
I wanted a little more magnification also so switched out the 22X NXS with a Golden Eagle and had to get back on target with the first shot.
I tested -18off the first go so decided to do -15, -21, & -24 off this time.
The rounds used for neck tension were loaded long so I could adjust, at the rang, to whatever looked best from the seating test. I went with -21 but probably should have went back to -18K since it had a better shape and was a little tighter.
I ran backwards from 5, 4, 3, & 2K tension. My groups last week & the seating test today were at 1K.
Looking at the targets, 1, 4, &5K looked good so I’ll start with -18 off at 4or5K tension, BR2’s.
I’ll run up to pressure with H4350, RL16 & maybe RL 15.5, and start shooting groups with the powder that looks good and gives the best numbers.
