First time shooting prone

Round2it

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Aug 20, 2012
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I loaded up 41.2 gr of H4350 and did some bullet depth seating tests with my LRP 6.5 Creedmoor.
This time I abandoned the 100 yard target and opted to shoot at a somewhat longer distance, which turned out to be 453 yards. I also tried shooting prone for the first time. I opted to do this with a bipod and rear bag.
Daylight was burning so I loaded new brass without fl sizing first. I've never done that before & don't think I'll do it again. I noticed that bullet seating was harder on some thane others so I didn't expect much precision from these rounds. I used 140 gr Amax bullets, win lr primers, H4350 and new Hornady cases.
Wind was vicious at 15 to 25 from my 4 - 5 o'clock and I was shooting 20 degrees south of dead east with -4 degree look angle. It was 59F though. What a treat for the first of February!
Before shooting this test the gun had 76 rounds down the tube.
These were only 3 shot groups, as my time was very limited, and bullets were seated .030" off, .020" off and right at kissing the lands. The only poi differenceI saw was the ones kissing the lands were about 1 1/4" higher.
I am using a metal door we took off the basement walkout as my target.
This was the first time shooting this rifle past the 100 yard sight in. I think I'll keep it.
The tape measure was used to show vertical spread. The pics loaded sideways...
 

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I loaded up 41.2 gr of H4350 and did some bullet depth seating tests with my LRP 6.5 Creedmoor.
This time I abandoned the 100 yard target and opted to shoot at a somewhat longer distance, which turned out to be 453 yards. I also tried shooting prone for the first time. I opted to do this with a bipod and rear bag.
Daylight was burning so I loaded new brass without fl sizing first. I've never done that before & don't think I'll do it again. I noticed that bullet seating was harder on some thane others so I didn't expect much precision from these rounds. I used 140 gr Amax bullets, win lr primers, H4350 and new Hornady cases.
Wind was vicious at 15 to 25 from my 4 - 5 o'clock and I was shooting 20 degrees south of dead east with -4 degree look angle. It was 59F though. What a treat for the first of February!
Before shooting this test the gun had 76 rounds down the tube.
These were only 3 shot groups, as my time was very limited, and bullets were seated .030" off, .020" off and right at kissing the lands. The only poi differenceI saw was the ones kissing the lands were about 1 1/4" higher.
I am using a metal door we took off the basement walkout as my target.
This was the first time shooting this rifle past the 100 yard sight in. I think I'll keep it.
The tape measure was used to show vertical spread. The pics loaded sideways...
You're shooting less than 1/2MOA so if I were you I wouldn't change a thing.
 
One comment:

Your wind influence appears to have been approx. 1/2 value or less.
Your vertical may well be attributable to wind and/or rear bag management. The wind influence I see as a possibility is the elevation just in front of the target area. Wind from your 4 - 5 o'clock would tend to rise sharply in that region. Even so, I'd lay odds it's simply rear bag.
For first time prone shooting you did very very well. Congrats .....
 
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