Guys
FWIW,
I just finished some more testing in my 284 SP Pistol, 18" bbl length,
using the RL-26 powder and 140 gr Nosler Partition bullets.
My hunting load was running 2850+ fps with decent accuracy,
of less than 2" at 300 yds zero, with the RL-17 powder.
I wanted to find the safe top end load for RL-26 powder with 140 N Part,
and still get decent hunting accuracy at normal hunting ranges < 500 yds etc.
I tested the RL-26 powder with 140 Part up to the max in my SP pistol,
here are the results, stopping at 62.5grs.
Be aware that this load is the MAX in my pistol,
with very lite bolt lift and no marks on the brass etc, use at your own risk.
1st Test,
Loaded overall length of 3.050", throat length of 2.480",
Bullets seated to the base of the neck,
Approximately .010" of bullet jump,
Standard 284 case, custom reamer spec's,
Win 120 standard primers.
Temp was 56*,
Wind at 12 O'clock from the North, at 10-15 mph.
5 shots each test,
Win neck sized brass,
Case capacity of 67.9 grs H2o,
All cases weighed within 1/10th gr,
Average Vel = 3143 fps,
High = 3155 fps,
Low = 3124 fps
SD = 12.2
Test #2,
same spec's as above,
Average Vel = 3167 fps,
High = 3189 fps,
Low = 3156 fps,
SD = 14.9
Accuracy was 1.125" at 300 yds for both tests, which I am tickled pink with.
This powder is a lot better than the RL-17, I started with in the 18" bbl.
I thought that the readings were false, as this was a new Magneto V-3 chrono being tested,
so I went home and got my Oelher 33 chrono, reloaded the just fired brass,
and returned to the range and shot the loads again.
Shooting thru both chrono's produced a 3-5 fps difference, between the 2 chrono's, with the above RL- 26 loads etc.
-------------------------------------------------------------------------------
My question is,
How do I get QL to match the test results,
I have tried tweaking QL,
and cannot get close to the chrono results for this load combo.
If anyone has QL V3.9,
can you run the same spec's as given above,
and provide the results from your end.
The results from my QL shows this info,
62.5 grs of RL-26/140gr Nosler shows 2809 fps @ 51007 psi,
there is a 364 fps difference from the QL predictions and test results.
I know from past use of QL,
the fps results are generally slower than chrono results etc.
Any suggestions would be greatly appreciated.
Tia,
Don
FWIW,
I just finished some more testing in my 284 SP Pistol, 18" bbl length,
using the RL-26 powder and 140 gr Nosler Partition bullets.
My hunting load was running 2850+ fps with decent accuracy,
of less than 2" at 300 yds zero, with the RL-17 powder.
I wanted to find the safe top end load for RL-26 powder with 140 N Part,
and still get decent hunting accuracy at normal hunting ranges < 500 yds etc.
I tested the RL-26 powder with 140 Part up to the max in my SP pistol,
here are the results, stopping at 62.5grs.
Be aware that this load is the MAX in my pistol,
with very lite bolt lift and no marks on the brass etc, use at your own risk.
1st Test,
Loaded overall length of 3.050", throat length of 2.480",
Bullets seated to the base of the neck,
Approximately .010" of bullet jump,
Standard 284 case, custom reamer spec's,
Win 120 standard primers.
Temp was 56*,
Wind at 12 O'clock from the North, at 10-15 mph.
5 shots each test,
Win neck sized brass,
Case capacity of 67.9 grs H2o,
All cases weighed within 1/10th gr,
Average Vel = 3143 fps,
High = 3155 fps,
Low = 3124 fps
SD = 12.2
Test #2,
same spec's as above,
Average Vel = 3167 fps,
High = 3189 fps,
Low = 3156 fps,
SD = 14.9
Accuracy was 1.125" at 300 yds for both tests, which I am tickled pink with.
This powder is a lot better than the RL-17, I started with in the 18" bbl.
I thought that the readings were false, as this was a new Magneto V-3 chrono being tested,
so I went home and got my Oelher 33 chrono, reloaded the just fired brass,
and returned to the range and shot the loads again.
Shooting thru both chrono's produced a 3-5 fps difference, between the 2 chrono's, with the above RL- 26 loads etc.
-------------------------------------------------------------------------------
My question is,
How do I get QL to match the test results,
I have tried tweaking QL,
and cannot get close to the chrono results for this load combo.
If anyone has QL V3.9,
can you run the same spec's as given above,
and provide the results from your end.
The results from my QL shows this info,
62.5 grs of RL-26/140gr Nosler shows 2809 fps @ 51007 psi,
there is a 364 fps difference from the QL predictions and test results.
I know from past use of QL,
the fps results are generally slower than chrono results etc.
Any suggestions would be greatly appreciated.
Tia,
Don
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