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further testing..


Cali_Ed

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Ok guys every one has seen this picture from the other threadb0b34a8c-d99b-422a-b3e8-99bd2ef8d792-1_z

My question to you guys is should I call the testing quits or keep trying to develop each one of those load by adjusting seating depth?

Or ♢don complicate poop with stupid poop?♢

mmy next goal is two test the 2 best ones at 300 and see what they do?

What would be my next logical step?

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Ok guys every one has seen this picture from the other threadb0b34a8c-d99b-422a-b3e8-99bd2ef8d792-1_z

My question to you guys is should I call the testing quits or keep trying to develop each one of those load by adjusting seating depth?

Or ♢don complicate poop with stupid poop?♢

mmy next goal is two test the 2 best ones at 300 and see what they do?

What would be my next logical step?

IBefore you go out further I would at least chrony the loads to find out the velocity and deviation, as it may come into play, depending on how far out you plan to shoot.  IMO

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  As you said , just shoot those loads at 300 & see what happens . The Velocity thing is over rated , but SD & ES will tell you more & you will see it at extended ranges . 

  The COL will be max ( or close to it ) @ 2.800" , as you know its as close as the Magazine will let you get to setting the best COL & the bullet type may have an effect on the out come also

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On that 178 AMAX at 39.9 - didn't you have a very similar group size at a higher charge?  Something at or over 44gr?

 

That was one full pass through an accuracy node.  The results at 39.9 and again at 44-something.  You'd probably hit the one under somewhere around a 36gr charge.

 

It's times like this - working all the way through an accuracy node - that you have to decide if the additional velocity will help you.  At longer distances, it certainly will help. If you'll stay at 300~500 yards, then it won't matter.

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  Here's some of my Chrono testing with Nosler 175 gr. , I have photo's of the targets also .

 

 


                             16" BBL. 175 gr. Nosler Match bullets. COL 2.796 "

 

# 1 - 39.5 gr. IMR 4895 ( on Noslers load data , the most accurate ) ( Annealed FC brass & crimped with Lee Factory crimp die )

Avg. Vel.- 2269 fps

         ES-      22fps

         SD-       8 fps

 

# 2-   38.5 WC 846 

Avg. Vel.- 2214 fps

          ES-     53 fps

          SD -    19 fps

 

# 3-   42 gr. IMR 4064 ( newer CCI primers )

Avg. Vel.-  2466 fps

         ES -      26 fps

         SD -     11 fps

 

# 4 -   40 gr. WC 846

Avg. Vel. - 2327 fps

         ES -     32 fps

         SD -     12 fps

 

 

                                20 " BBL.  175 gr. Nosler Match bullets , COL 2.796 "

 

 

# 1- 39.5 gr. IMR 4895 ( again this loading in the Nosler data was there most accurate )( Annealed FC case , Lee Factory crimp die )  ( only four shots in group, all I had left to use  )

Avg. Vel. -2392 fps.

         ES -    69 fps

         SD -    28 fps

 

# 2 - 40 gr. WC 846 ( there are five shots in that group )

Avg. Vel. - 2446 fps

         ES -      43 fps

         SD -       16 fps

 

# 3 - 42 gr. IMR 4064 ( newer CCI Primers )

Avg. Vel. - 2573 fps

         ES -      17 fps

         SD -        7 fps

 

# 4 - 40 gr. IMR 4895 ( WW brass , annealed & crimped with a Lee factory crimp die )

Avg. Vel. - 2353 fps

         ES -      44 fps

         SD -       15 fps. 

 

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