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 Replacing my Barrel

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rowdyjoe

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Number of posts : 127
Age : 72
Location : Arlington, TX
Registration date : 2017-05-27

PostSubject: Re: Replacing my Barrel   September 6th 2017, 6:42 pm

It's getting better.  I made another trip to the range this afternoon and I believe the accuracy is in there.  I just need to work harder to find it.  Here's the latest target from today.  The top 3 holes were my last 3 shots AFTER I found the rear sight was a bit loose.  (grrrrrr ....knew I should have put thread lock on that danged thing)
All hits are on my point of aim.  I was holding 6 o'clock for the first 7 and a center hold on the last 3.  When I sighted it in on Friday, I was using a much smaller bullseye and holding 6 o'clock. 
I used Hornady .495 RB and .011" (compressed) ticking for this target and it appears to produce consistent hits.  Once I get the rear sight nailed down, the groups should get tighter.  Notice there's a windage spread probably caused by the sight moving slightly side to side. 
The target was posted at 50 yds.


Oh, by the way ....no more blown patches.  Smile


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FrontierGander
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Location : Boncarbo,Colorado
Registration date : 2008-05-19

PostSubject: Re: Replacing my Barrel   September 6th 2017, 8:30 pm

That will certainly do the job!
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rowdyjoe

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Number of posts : 127
Age : 72
Location : Arlington, TX
Registration date : 2017-05-27

PostSubject: Re: Replacing my Barrel   September 20th 2017, 10:48 pm

Yep, that target made me smile knowing that I was making progress. 

I had to shim the rear sight to hold it in place as the screw was as tight as it would go.  A piece of .007" feeler gauge cut to fit under the retainer did the trick and I also added a bit of blue thread lock to the screw for security.  I didn't notice the sight being loose until after I had fired a few rounds and when I noticed the east-west spread I checked the sights and found the problem.  It wasn't moving much but, it was enough to cause trouble. 
I haven't been to range again to see how much the rear sight is off but, hope to be able to go before the week is out.
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rowdyjoe

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Number of posts : 127
Age : 72
Location : Arlington, TX
Registration date : 2017-05-27

PostSubject: Re: Replacing my Barrel   September 24th 2017, 11:39 pm

Went to the range Friday (9/22) to check the rear sight work and to re-zero.  Well, the later was not needed.  I got lucky in re-installing the rear sight and got it very, very close.  Smile  I used the same load and lube as the last time and the target below shows the results haven't changed ...except point of impact.  I used a smaller target this time, hung it at 50yds, and held at 6 o'clock. 
Now that the rear sight is fixed in place, I have a good place to start for tightening up the groups. 

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rowdyjoe

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Number of posts : 127
Age : 72
Location : Arlington, TX
Registration date : 2017-05-27

PostSubject: Re: Replacing my Barrel   October 7th 2017, 9:14 am

I finally got around to casting some RB with my new Lee 10 lb pot and .495 two cavity mold.  I cast about 140 balls and remelted about 20.  I then weighted each ball and divided them into two groups.  One group of 73 balls weighs between 182 & 183 grains.  The other group weighs between 181 & 181.8 grains. 
I went to the range yesterday (Friday) to test my newly cast RB and they performed very well using the same .011" pillow ticking and lube combo I used with the Hornady swaged balls.  All shots were fired using the heavier lot of balls. 
You can see by the target that I'm having a bit of trouble keeping the front sight in vertical alignment constantly.  I really need to work on that.
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