waco
Springfield, Oregon
So I'm at it again. Same bullet, same rifle, only this time I'm testing H414
The Remington 700 got a new paint job but other than that she is still the same rifle as last time.
Today while running tests with my 1894 Marlin in .357 I also did a 10 shot Satterle ladder test.
This method of creating an accurate round has worked every time my brother and I have tried it. I am a firm believer in this load development process.
The bullets used in this test were cast by me about nine months ago. Lamar suggested I use an alloy of 90/6/4 (Pb/Sb/Sn) water dropped from the mold for a BHN of around 18-19 bhn. My previous loads were assembled using 40.0gr Rx15 for a MV of approximately 2480fps.
This new test loaded the same 165gr bullet with .2gr increment charges of H414 starting with 46.0gr and ending with 47.8gr
I am looking for flat spots in velocity were an accuracy node is likely to be. Here are the results. These numbers where obtained using a Magnetospeed chronograph.
46.0-2533
46.2-2573
46.4-2554
46.6-2559
46.8-2574
47.0-2582
47.2-2597
47.4-2609
47.6-2595
47.8-2621
Note there is only 5fps difference between loads three and four. This is the "flat spot" you are looking for. Next up I'll load a batch probably 46.5gr and shoot for groups at 100 yrds.
My last attempt at 500 yards with this bullet was only doing just over 2200fps. The additional 300fps will help the bullet stay supersonic until it reaches the target. Bullets falling into transonic stage from supersonic tend to do strange and unpredictable things. This has been my observation anyway.
So. Stay tuned for an upcoming video revisiting the 500 yard shoot. If you don't already know, We have a YouTube channel an we are
Coats Brothers Firearms.
Please check us out. We would love to have you as a new subscriber to our channel. Thanks.
The Remington 700 got a new paint job but other than that she is still the same rifle as last time.
Today while running tests with my 1894 Marlin in .357 I also did a 10 shot Satterle ladder test.
This method of creating an accurate round has worked every time my brother and I have tried it. I am a firm believer in this load development process.
The bullets used in this test were cast by me about nine months ago. Lamar suggested I use an alloy of 90/6/4 (Pb/Sb/Sn) water dropped from the mold for a BHN of around 18-19 bhn. My previous loads were assembled using 40.0gr Rx15 for a MV of approximately 2480fps.
This new test loaded the same 165gr bullet with .2gr increment charges of H414 starting with 46.0gr and ending with 47.8gr
I am looking for flat spots in velocity were an accuracy node is likely to be. Here are the results. These numbers where obtained using a Magnetospeed chronograph.
46.0-2533
46.2-2573
46.4-2554
46.6-2559
46.8-2574
47.0-2582
47.2-2597
47.4-2609
47.6-2595
47.8-2621
Note there is only 5fps difference between loads three and four. This is the "flat spot" you are looking for. Next up I'll load a batch probably 46.5gr and shoot for groups at 100 yrds.
My last attempt at 500 yards with this bullet was only doing just over 2200fps. The additional 300fps will help the bullet stay supersonic until it reaches the target. Bullets falling into transonic stage from supersonic tend to do strange and unpredictable things. This has been my observation anyway.
So. Stay tuned for an upcoming video revisiting the 500 yard shoot. If you don't already know, We have a YouTube channel an we are
Coats Brothers Firearms.
Please check us out. We would love to have you as a new subscriber to our channel. Thanks.