375 Ruger; chrony results

[Big Squeeze]

Here is a load that I chrony`d awhile back:

375 Ruger Alaskan 20" barrel; 1.5-5x20 VX3 #4

Bullet..............................................225 gr. Horn SP
Primer............................................WLRM
Brass..............................................Hornady
COL................................................3.341"
Powder............................................RL 15
Charge............................................79.8 gr.
Velocity...........................................3016 fps. average
Average group size 100 yards............1.08" OD (3 shot)

Next come the 260 A/B`s

 

[7 STW]

That'll get noticed..Would love to see what heavier bullets do in that case.

 

[Big Squeeze]

That'll get noticed..Would love to see what heavier bullets do in that case.

..............My 270 gr. Hornady factory loads averaged @ 2703 fps. Guessing, the 260 A/B should probably run around 2750-2825 fps.

Hornady and Nosler make the 300 BT`s that I will also look forward to trying. Guessing 2575 fps to 2625 fps with those.

 

[7 STW]

Thank you for your numbers...

 

[FOTIS]

Kill them coyotes! or 300 yard deer...... :lol:

 

[FOTIS]

BYW:



Cartridge : .375 Ruger
Bullet : .375, 225, Hornady SP 3706
Cartridge O.A.L. L6: 3.341 inch or 84.86 mm
Barrel Length : 20.0 inch or 508.0 mm
Powder : Alliant Reloder-15

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 77 63.84 2302 2646 32561 9009 91.1 1.308
-18.0 79 65.44 2357 2775 34679 9281 92.3 1.274
-16.0 81 67.03 2412 2906 36927 9544 93.4 1.241
-14.0 83 68.63 2467 3040 39313 9798 94.4 1.204
-12.0 85 70.22 2522 3177 41843 10040 95.3 1.169
-10.0 87 71.82 2577 3317 44528 10272 96.2 1.135
-08.0 89 73.42 2631 3459 47376 10490 96.9 1.102
-06.0 91 75.01 2685 3603 50400 10695 97.6 1.071
-04.0 93 76.61 2739 3749 53609 10886 98.2 1.041
-02.0 95 78.20 2793 3898 57017 11062 98.7 1.012 ! Near Maximum !
+00.0 97 79.80 2846 4048 60639 11221 99.2 0.984 ! Near Maximum !
+02.0 99 81.40 2899 4200 64489 11364 99.5 0.956 !DANGEROUS LOAD-DO NOT USE!
+04.0 101 82.99 2952 4354 68584 11490 99.8 0.930 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 84.59 3004 4510 72943 11597 99.9 0.905 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 86.18 3056 4666 77588 11685 100.0 0.881 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 87.78 3108 4825 82540 11758 100.0 0.858 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 97 79.80 2964 4388 71600 10897 100.0 0.914 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 97 79.80 2684 3598 49860 11031 94.4 1.075

 

[Big Squeeze]

BYW:



Cartridge : .375 Ruger
Bullet : .375, 225, Hornady SP 3706
Cartridge O.A.L. L6: 3.341 inch or 84.86 mm
Barrel Length : 20.0 inch or 508.0 mm
Powder : Alliant Reloder-15

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 77 63.84 2302 2646 32561 9009 91.1 1.308
-18.0 79 65.44 2357 2775 34679 9281 92.3 1.274
-16.0 81 67.03 2412 2906 36927 9544 93.4 1.241
-14.0 83 68.63 2467 3040 39313 9798 94.4 1.204
-12.0 85 70.22 2522 3177 41843 10040 95.3 1.169
-10.0 87 71.82 2577 3317 44528 10272 96.2 1.135
-08.0 89 73.42 2631 3459 47376 10490 96.9 1.102
-06.0 91 75.01 2685 3603 50400 10695 97.6 1.071
-04.0 93 76.61 2739 3749 53609 10886 98.2 1.041
-02.0 95 78.20 2793 3898 57017 11062 98.7 1.012 ! Near Maximum !
+00.0 97 79.80 2846 4048 60639 11221 99.2 0.984 ! Near Maximum !
+02.0 99 81.40 2899 4200 64489 11364 99.5 0.956 !DANGEROUS LOAD-DO NOT USE!
+04.0 101 82.99 2952 4354 68584 11490 99.8 0.930 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 84.59 3004 4510 72943 11597 99.9 0.905 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 86.18 3056 4666 77588 11685 100.0 0.881 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 87.78 3108 4825 82540 11758 100.0 0.858 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 97 79.80 2964 4388 71600 10897 100.0 0.914 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 97 79.80 2684 3598 49860 11031 94.4 1.075

..............................It would appear that my Alaskan rifle is just a little ahead of your data in the velocity dept.

I also received loading data from Hornady via an e/mail showing 79.5 gr. of RL15 @ 3000 fps. from another the 20" Alaskan using the 225 gr. Hornady SP.......Their chrony results are right on par with mine.

 

[YoteSmoker]

I swear that someone here is a ruger/hornady rep.

 

[Big Squeeze]

I swear that someone here is a ruger/hornady rep.

.....................You think its me?? Wrong!.... I work for myself, not for Hornady or Ruger!..........Nice try! :lol: :lol: :lol:

 

[Big Squeeze]

That'll get noticed..Would love to see what heavier bullets do in that case.

.....................Here ya go!

Here is a load I duplicated, taken directly from Jeff Quinn`s test/review on "gunblast.com",,,,"archives" section, dated 2/6/07. His test rifle was the 23" .375 Ruger African.

Everything is the same as my first post on this thread, but with these exceptions. Rifle is the same; my 20" Ruger Alaskan; 1.5-5x20 VX3.

COL= 3.413"
Bullet= 270 gr. Horn SP.
Powder= H-4350
Charge= 87 gr.
M/Velocity= 2818 fps average.
OD average 3 shot grouping= 1.108"
Compressed loading.
Started with 83.5 gr. charge and worked up.

In his article, he specified other Hodgdon powders, but preferred the H-4350 which I used. The velocity from his 23" African using the same charge and bullet was in the 2870`s.

 

[FOTIS]

That would do nicely. Try the 260 AccuBond net. Great bullet.

 

[Big Squeeze]

That would do nicely. Try the 260 AccuBond net. Great bullet.

..................Yep! That bullet is also on my list to try later. As a guess, probably will go around 2850, up to maybe 2875 fps. for the 260 gr. AB. :wink:

 

[bullet]

You are in the ball park on velocities for your Ruger 375, my 375 Wby throws a Nosler 300gr Partition custom ammo at 2830fps.

 

[Big Squeeze]

You are in the ball park on velocities for your Ruger 375, my 375 Wby throws a Nosler 300gr Partition custom ammo at 2830fps.

...................On "gunblast.com" archives section 2/6/07, one of the test loads listed for the 23" African, sends a 300 gr. Horn FMJ @ 2782 fps.... The 23" African is right on the heels of your 375 Wby.

Based on that, I just may get 2700 or so when I later test some 300 grainers from my 20" er!!...........If I`m able to, not too bad from a shorty 20" er,,,,ay???

 

[bullet]

You are in the ball park on velocities for your Ruger 375, my 375 Wby throws a Nosler 300gr Partition custom ammo at 2830fps.

...................On "gunblast.com" archives section 2/6/07, one of the test loads listed for the 23" African, sends a 300 gr. Horn FMJ @ 2782 fps.... The 23" African is right on the heels of your 375 Wby.

Based on that, I just may get 2700 or so when I later test some 300 grainers from my 20" er!!...........If I`m able to, not too bad from a shorty 20" er,,,,ay???

Not to bad at all and it will be a handy rifle.

 

[Big Squeeze]

You are in the ball park on velocities for your Ruger 375, my 375 Wby throws a Nosler 300gr Partition custom ammo at 2830fps.

...................On "gunblast.com" archives section 2/6/07, one of the test loads listed for the 23" African, sends a 300 gr. Horn FMJ @ 2782 fps.... The 23" African is right on the heels of your 375 Wby.

Based on that, I just may get 2700 or so when I later test some 300 grainers from my 20" er!!...........If I`m able to, not too bad from a shorty 20" er,,,,ay???

Not to bad at all and it will be a handy rifle.

..............That`s the idea; short n sweet, handy, fast and very powerful. Luv my two!!