Hi guys!
Spent another morning shooting silver bullets downrange! What a wonderful, relaxing way to spend a morning!
I Shot my 200 Grain Cast Lyman #311299's yesterday with both IMR 4350 and IMR4831.
All targets were shot at 200 yards.
-9 degrees Celcius
Sunny, and very little wind present.
Remington 700, Varmint Laminate in .308 Winchester.
1-12" Twist
All bullets had 2 layers of liquid Allox applied to the nose section. Most guys wont do this I know. It is not nessessary for sure. But, I HAVE SEEN MY GROUPS SHRINK BY AS MUCH AS 1.5" BY DOING IT.
I have compared the same loads with and without bullet noses lubed. I am thinking it may be hydraulicly centering the forward bore riding section of the bullet. My bore is .3005". My bullets just engrave lightly as they are chambered. The excess lube just flows to fill the void between the nose section and bore. Because fluid is not compressible, I was thinking this would very positively aid in alignment during the bullets acceleration down the bore. Tell me what you guys think of this idea. I am open to ideas.
All bullets were seated to the bottom of the lower lube groove.
Very light crimp was applied to the cases.
Federal 210M Primers
Winchester Neck sized cases (weight segregated and uniformed)
Hornady Gaschecks used
Lyman super Moly lube.
Bullets were sized to .310"
I noticed a significant difference with loads that used a Dacron filler and those that did not.
Loads that did not use Dacron filler, grouped close to twice as big.
I tried a few loads with the IMR4350, and filled the space between the top of the powder and the base of the bullet. Even a 1/4" piece of filler really improved the load stats AND the target groups size.
As the charges were increased, I noticed a small trend in accuracy. It improved a little each time.
At 41.0 gr. IMR4350 My group was 2.515" (200yds) Ave velocity:2282fps.
At 42.0 gr. IMR4350 My group was 2.400" (4 of 5 rounds in 1.3") 200yards. Ave Velocity 2340fps. [smilie=w:
With IMR 4831, I never used any Dacron filler on this trip. So this trial with 4831 was just to evaluate the accuracy of a few loads witout the filler.
Group sizes varied a little differently with this powder.
42.5gr. IMR4831, Group size was 3.234" at 200yds. Ave velocity:2051fps.
44.0gr. IMR4831, Group size was 0.530" at 200yds! YEP thats right! 0.530" (5shots) Ave velocity: 2183 fps.
45.0gr.IMR4831, Group size was 2.373" at 200yds. Ave velocity:2249fps.
46.0gr. IMR4831, Group size was 2.597" at 200yds. Ave velocity: 2277fps.
I was very pleased with these results! Accuracy for most loads was more than adequate for most shooting needs!
The 44.0gr. IMR4831 load was rediculous! it may have been a fluke, but I will shoot a few more groups to get a more accurate trending average. It was only 5 rounds.
IMR 4831 seemed to burn surprisingly clean! I think having my bullets lightly engraved into the rifling may have helped the powder to burn more completely.
None of the loads had any pressure issues.
The only thing that I would like to be improved is my Standard deviations. That may take a magnum primer.
I will try that after all my preliminary load tests are done.
Velocity is really good! I am very happy with a 2250-2300fps+ averages!
There is room for maybe 47.5grains of IMR4831 to the base of the bullet. That would be 100% load density.
Hopefully this will get me 2350ish fps without the accuracy falling off, or any pressure signs showing up.
And no filler! Simplifies the loading a little.
Hope you guys enjoyed the update!
Be careful when working up loads with these powders. remember I had my boolets [B]slightly engraved [/B] into the rifling to aid these slow powders to burn better.
Take care, straight shooting, and keep it fun!
Spent another morning shooting silver bullets downrange! What a wonderful, relaxing way to spend a morning!
I Shot my 200 Grain Cast Lyman #311299's yesterday with both IMR 4350 and IMR4831.
All targets were shot at 200 yards.
-9 degrees Celcius
Sunny, and very little wind present.
Remington 700, Varmint Laminate in .308 Winchester.
1-12" Twist
All bullets had 2 layers of liquid Allox applied to the nose section. Most guys wont do this I know. It is not nessessary for sure. But, I HAVE SEEN MY GROUPS SHRINK BY AS MUCH AS 1.5" BY DOING IT.
I have compared the same loads with and without bullet noses lubed. I am thinking it may be hydraulicly centering the forward bore riding section of the bullet. My bore is .3005". My bullets just engrave lightly as they are chambered. The excess lube just flows to fill the void between the nose section and bore. Because fluid is not compressible, I was thinking this would very positively aid in alignment during the bullets acceleration down the bore. Tell me what you guys think of this idea. I am open to ideas.
All bullets were seated to the bottom of the lower lube groove.
Very light crimp was applied to the cases.
Federal 210M Primers
Winchester Neck sized cases (weight segregated and uniformed)
Hornady Gaschecks used
Lyman super Moly lube.
Bullets were sized to .310"
I noticed a significant difference with loads that used a Dacron filler and those that did not.
Loads that did not use Dacron filler, grouped close to twice as big.
I tried a few loads with the IMR4350, and filled the space between the top of the powder and the base of the bullet. Even a 1/4" piece of filler really improved the load stats AND the target groups size.
As the charges were increased, I noticed a small trend in accuracy. It improved a little each time.
At 41.0 gr. IMR4350 My group was 2.515" (200yds) Ave velocity:2282fps.
At 42.0 gr. IMR4350 My group was 2.400" (4 of 5 rounds in 1.3") 200yards. Ave Velocity 2340fps. [smilie=w:
With IMR 4831, I never used any Dacron filler on this trip. So this trial with 4831 was just to evaluate the accuracy of a few loads witout the filler.
Group sizes varied a little differently with this powder.
42.5gr. IMR4831, Group size was 3.234" at 200yds. Ave velocity:2051fps.
44.0gr. IMR4831, Group size was 0.530" at 200yds! YEP thats right! 0.530" (5shots) Ave velocity: 2183 fps.
45.0gr.IMR4831, Group size was 2.373" at 200yds. Ave velocity:2249fps.
46.0gr. IMR4831, Group size was 2.597" at 200yds. Ave velocity: 2277fps.
I was very pleased with these results! Accuracy for most loads was more than adequate for most shooting needs!
The 44.0gr. IMR4831 load was rediculous! it may have been a fluke, but I will shoot a few more groups to get a more accurate trending average. It was only 5 rounds.
IMR 4831 seemed to burn surprisingly clean! I think having my bullets lightly engraved into the rifling may have helped the powder to burn more completely.
None of the loads had any pressure issues.
The only thing that I would like to be improved is my Standard deviations. That may take a magnum primer.
I will try that after all my preliminary load tests are done.
Velocity is really good! I am very happy with a 2250-2300fps+ averages!
There is room for maybe 47.5grains of IMR4831 to the base of the bullet. That would be 100% load density.
Hopefully this will get me 2350ish fps without the accuracy falling off, or any pressure signs showing up.
And no filler! Simplifies the loading a little.
Hope you guys enjoyed the update!
Be careful when working up loads with these powders. remember I had my boolets [B]slightly engraved [/B] into the rifling to aid these slow powders to burn better.
Take care, straight shooting, and keep it fun!
