Hooda Thunkit
Member
After loaning out one of my Sako Finns, I need to re-zero this particular one at 300 yds with my handloads.
This rifle -
I'm tellin' ya boys, 300 yards is a long way, what with iron battle sights and my 7th-decade eyes.
My handloads (which qualifies this post to be in the "handloading and reloading" section) -
An Accurate 31-185L Sized to .312, which is Tom's version of a 311041, which is sort of a C313-185-FP, but throws at 193gr checked and lubed with CWW and a touch of Sn.
Got all that?
Copper check, plain old NRA 50/50 lube, only the bottom groove lubed.
18.8gr 2400 powder, in a neck-turned (to .010"), primer pocket standardized, flash-hole de-goobered Lapua case.
About 1675 fps.
At 300 yds, my rear sight is set a notch below the 800 yd mark. I knew the 800 yard mark was too high, so I set it down one notch, then put a .003" feeler gauge under it.
Aiming point is the top of the front sight post at the base of the black circle, which, BTW, is smaller than the width of the front sight at 300 yds.
And, I'm using a re-used, patched target - because I grew up that way.
That gave me shot #1
Shot #2 I replaced the .003" gauge with a .002" feeler gauge under the sight.
I don't have a .001 gauge.
#3 was a hair sliver of white under the black circle.
#4 was a red hair sliver of white under the black circle.
Small changes get big at 300 yards.
Then I decided I was shooting to the right, so I moved the front sight a bit.
Shots #5 (which I yanked, and called low prior to looking) and #6 showed I moved it too far..
Still, my last 4 consecutive shots were in 6", at 300 yards, with a battle rifle.
I'm calling it good.
This rifle -
I'm tellin' ya boys, 300 yards is a long way, what with iron battle sights and my 7th-decade eyes.
My handloads (which qualifies this post to be in the "handloading and reloading" section) -
An Accurate 31-185L Sized to .312, which is Tom's version of a 311041, which is sort of a C313-185-FP, but throws at 193gr checked and lubed with CWW and a touch of Sn.
Got all that?
Copper check, plain old NRA 50/50 lube, only the bottom groove lubed.
18.8gr 2400 powder, in a neck-turned (to .010"), primer pocket standardized, flash-hole de-goobered Lapua case.
About 1675 fps.
At 300 yds, my rear sight is set a notch below the 800 yd mark. I knew the 800 yard mark was too high, so I set it down one notch, then put a .003" feeler gauge under it.
Aiming point is the top of the front sight post at the base of the black circle, which, BTW, is smaller than the width of the front sight at 300 yds.
And, I'm using a re-used, patched target - because I grew up that way.
That gave me shot #1
Shot #2 I replaced the .003" gauge with a .002" feeler gauge under the sight.
I don't have a .001 gauge.
#3 was a hair sliver of white under the black circle.
#4 was a red hair sliver of white under the black circle.
Small changes get big at 300 yards.
Then I decided I was shooting to the right, so I moved the front sight a bit.
Shots #5 (which I yanked, and called low prior to looking) and #6 showed I moved it too far..
Still, my last 4 consecutive shots were in 6", at 300 yards, with a battle rifle.
I'm calling it good.
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