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test results help: UPDATE 300 yard test

 
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  #15  
Old 04-02-2013, 01:38 PM
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Join Date: Feb 2012
Location: Iron Range, Minnesota
Posts: 778
Re: test results help

just read that using a marker to blacken bullets helps with the contrast if getting errors....that was in the Shooting chrony manual...forgot about that....gonna blacken my bullets this afternoon in preparation for tomorrow
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  #16  
Old 04-02-2013, 05:25 PM
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Join Date: Jul 2009
Location: Northern MN
Posts: 205
Re: test results help

Darkening the bullet to make it less reflective sounds like a venture worth trying....I always thought that a less reflective moly bullet could help...

I do use marker on my cases to positively identify them before and after tests but it does tend to grime up my chamber after a while....I also use it on my bullets in my test cases for finding the lands...It does have thickness and there is a possibility that it might screw up the bullets fight or gum up the barrel slightly...I don't know but let me know...You be the guinea pig this time. (Kroil will clean it right off though)

If you can even lay up a big sheet of cardboard on the sun side of the chrony it may help a bunch....bigger the better as long as you can see and shoot by it...
Good luck,
randy
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  #17  
Old 04-02-2013, 07:17 PM
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Location: Iron Range, Minnesota
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Re: test results help

Did another test today, tested with seating depths .010, .050, .090, and .130 off the lands. I shot round robin, going back and forth between 2 targets at a time for the first grouping, then a 4 target round robin for the second group.

Originally the targets were set so .010 was above, and .130 was above .090...I put each target for seating depths together for presenting. the top target is the first string for each, and the bottom is the second.

I think i was getting tired from walking the 100 yards back and forth through the 8n inch snot, so there are called fliers on the second groups for .050 and .090, and a shot that I did not call as fliers on .010 and .130
Conditions:
Temp: 34
Wind 6mph from 70'clock
Pressure: 30.26
Humidity: 24%
Light: full sun down range, shadows where I was shooting

Here are the results:

.010 off the lands:


.050 off the lands: Note, the top target is a personal best for me at 100 yards


.090 off the lands:



.130 off the lands:



As usual, comments/suggestions/questions are always welcome.

Thanks
Erik
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  #18  
Old 04-02-2013, 10:12 PM
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Join Date: Jan 2013
Location: Meridian, Idaho
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Re: test results help: UPDATE with seating depth

50 and 90 look promising. Go 75 and see what happens. the good news is not much verticle is going on. I would also repeat 50. If 50 has a horizontal flyer those two look pretty good. 75ish could be magic though.
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  #19  
Old 04-03-2013, 10:40 AM
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Join Date: Jul 2009
Location: Northern MN
Posts: 205
Re: test results help: UPDATE with seating depth

Erik,

I agree with Brent, .050 is looking good but on the other hand you have bullet holes touching in almost every group..That said, you are doing a great job releasing each shot considering the conditions you have been shooting in (ie: cold, windy)...Your handloads must be real consistent along with your style...Therefore, do not rule anything out yet except maybe the .130 and even there one group was not bad...

My advice might be to try some of the best loads at 3 or 4 hundred now providing you don't get wind....MOA will often improve because the side velocity (mostly caused by the shooter) disipates rather fast and is barely measureable after 200 yards.....This is why others often state it is a waste of time shooting at 100 yards...On the contrary, once you have proved your loads at 100 yards there is almost a 100% chance your loads will be great beyond that....The best 100 yard benchrest guys don't see the MOA increases that others often brag about....Goes to show how bag manners are so important....My decrepid old bones and blurry old eyes won't allow me to shoot like I used to and today I am happy to shoot a .2 or .3 once in a while at 100 and delighted when I set up an 8-1/2x11 target at 600 yards and shoot 4" and keep them all on the paper.....

Calling your shots as you do is a great asset to analyzing your groups...I actually note this information on my record sheet along with MV, load & weather info...It is especially important when you know you goofed so you can dis-allow that shot....

Keep up the good work,
Randy
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  #20  
Old 04-03-2013, 11:40 AM
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Join Date: Feb 2012
Location: Iron Range, Minnesota
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Re: test results help: UPDATE with seating depth

Gonna load up some more at .050, and .090, and split the difference and do some at .070.

Going to test at either 200 or 300, any suggestions on which?

wind forecast for Friday is no wind in the afternoon, though my Kestrel will tell me the truth.

Also, 3 shot groups or 5 shot groups? I am trying to keep this batch of brass together, so I have 22 left to use for this test.

Thanks

Erik
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  #21  
Old 04-03-2013, 11:56 AM
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Join Date: Jan 2013
Location: Meridian, Idaho
Posts: 1,197
Re: test results help: UPDATE with seating depth

Well, this is what I do.....I reload in the field in my truck. Some people think it is nuts but it saves me a lot of $ working up loads in the field.

For example, let's say you load some 70's and they are OMG bug holes at 200. Are you going to try for better? Probably not. So if you had loads at 50 and 90 you are wasting the 90's as you can seat the 50's. I guess in your case the 90 are flying well too so it may not be a waste. Anyway that is what I do.

If you have perfect conditions why not shoot at 300? Some guys shoot at 500 or a 1000. The further the distance the more variations are going to show up.
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