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240smk's in 1:10 barrel

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Unread 12-24-2004, 05:55 PM
Platinum Member
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: 240smk\'s in 1:10 barrel

Not sure what I had entered but the BC or MV I entered must have been off, looks like 1500 yards would be fine looking at it again.
Brent Moffitt
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Unread 12-29-2004, 10:49 PM
Gold Member
Join Date: Nov 2004
Posts: 877
Re: 240smk\'s in 1:10 barrel

Howdy everybody.
Finially had a day here with winds below 35mph(steady at 7, gusting to 15), so early in the am I hurdled some 240's at my 400 yd target. Nothing fancy just load development. Taken on its own, this test was mildly successful. All the groups I shot went into less than .75 moa, but none under .5moa. Considering that this rifle will reguraly shoot between .75" and and inch with my 220 SMK load at this range, I wasn't too excited. Tomorrow morning im going to load some 220's to throw at my new portable target stand. I finished surveying over the weekend for points at 1000, 1200, and 1400. Provided the wind cooperates, in the next few days I should have my first holes in paper past 1000.
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Unread 01-29-2005, 06:09 PM
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Join Date: Nov 2004
Posts: 877
Re: 240smk\'s in 1:10 barrel...well kinda

Finially, got my computer fixed!!!
My portable target stand has been up "on the hill" for 3 weeks now. I haven't found a good load for the 240s yet, but I figured I might as well give it a try with the 220s. Driving out to shoot the first time at this range was a bit intimidating. ive been shooting various precision rifle sports for quite a while, but ill admit that for a minute there was a bit of aprehension as to whether or not this was even remotely possible. I know a lot of you guys have no problem shooting at this range, but with a good deal more equipment (read $) than I do.
Wind to my back at 10mph, and switching from 5 to 7 oclock I released my first shot. The first shot impacted low ( I shot with a 1200 yd correction... I need to recalibrate my mildots), but perfectly in line with the stand. 11.5 moa and 2 shots later I had a bullet hole within 1" of my poa.
I shot 2 3 shot groups with two loads:
220smk, 68.4gr of h4831sc 75fps of es
220smk, 73.0gr of h1000 15fps of es
the 4831 load is shorter and fits in the mag, the h1000 is a single shot load.
The 4831 load (and my first group) was 19.5", with a 21" following it.
The h1000 load was 15.5" and 31.5" The last shot in the last group was credited to the shifting winds at my back, but the first 2 landed just 6" apart!
There are several things that I could have done to shrink those groups, and ill try as soon as the snow melts.
Anybody else have any experence with groups at these ranges?
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