What's Happening Here - Solved!

[125JHP]

For those interested, here are the new comparative readings from each gun. All loads used the same Federal cases as last time and CCI 500 primers. For comparison, I made up some duplicates of the the AA-5 loads using Rem primers and also Magtech primers to see just how much difference the primer could make.Not much. Those are marked below. Everything else was the same. OAL was 1.438. No pressure indicators noted. These loads are in the range of +P and are presented for discussion purposes only. As such, I do not recommend their use in your guns.

125 JHP Loads from 3" bbl

A3 - 7.0g AA-5 - CCI Avg 923 fps
A4 - 7.0g AA-5 - Rem Avg 920 fps
A5 - 7.0g AA-5 - Magtech Avg 933 fps

B3 - 5.1g N-320 - Avg 963 fps
C3 - 5.1g W-231 - Avg 887 fps
D3 - 6.5 N-350 - Avg 1001 fps
-------------------------------------------------
125 JHP Loads from 1-7/8" bbl

E3 - 7.0g AA-5 - CCI Avg 862 fps
E4 - 7.0g AA-5 - Rem Avg 849 fps
E5 - 7.0g AA-5 - Magtech Avg 866 fps

F3 - 5.1g N-320 - Avg 904 fps
G3 - 5.1g W-231 - Avg 827 fps
H3 - 6.5 N-350 - Avg 890 fps

Well that's it for this time - next I will do the water tests to see if they expand and penetrate as desired.

 

[Rule3]

Well that's it for this time - next I will do the water tests to see if they expand and penetrate as desired.

arf

But wait!! What was the bottom line? What was it?
The Cliff Notes or Readers Digest Version. Please

Oh and when you label your jeans with a Sharpie you are supposed to put your name not the date so you do not loose them at camp.

Forget the water tests, they all expand in water.

 

[125JHP]

But wait!! What was the bottom line? What was it?
The Cliff Notes or Readers Digest Version. Please

Oh and when you label your jeans with a Sharpie you are supposed to put your name not the date so you do not loose them at camp.

Forget the water tests, they all expand in water.

That way it's easier to get a date at my age.

Read the post prior to my last one for the solution.

 

[Rule3]

All due to a battery??
Oh well look at all the fun you had!

 

[S&WIowegan]

Battery Power

I have an easy way of knowing when the battery needs replacement. The PACT Pro Chrono XP has a built in printer. The printer craps out before the chrono part does. First time it happened I thought my printer was defective.

 

[125JHP]

The Mk-III doesn't have a printer so can't use that test.

The real questions are - at what point (voltage) do false readings begin? How many of the previous years and years of testing is invalid? Can this chrono be trusted in the future?

The experience with the .243 was obvious. One of the reasons I shoot .22 for control is to catch obvious malfunctions but this time the 22's were in their normal fps ballpark - I will assume because they are the first thing I always test, the battery may have had enough surface juice when first turned on.

I suppose I will have to check voltage every time and plan on keeping fresh batteries on hand and do one 22 test at the end of each session..

 

[Rule3]

The Mk-III doesn't have a printer so can't use that test.

The real questions are - at what point (voltage) do false readings begin? How many of the previous years and years of testing is invalid? Can this chrono be trusted in the future?

The experience with the .243 was obvious. One of the reasons I shoot .22 for control is to catch obvious malfunctions but this time the 22's were in their normal fps ballpark - I will assume because they are the first thing I always test, the battery may have had enough surface juice when first turned on.

I suppose I will have to check voltage every time and plan on keeping fresh batteries on hand and do one 22 test at the end of each session..

But think of the testing opportunities this will open up for you. You can compare different brands life spans and different temperatures, on off cycles, reads per battery, it's endless!

In Arizona, how about a solar panel set up?

Actually, Consumer Reports just stated that Panasonic Batteries out last Energizer and Duracell (I think it was AA though)