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Alliant Reloder-16

400 yards

4 shots inside .6 inches
1 out made group 1.2 may have been me may not needless to say I'll be shooting it again
108berger bt r-16 34.4 .010 off

Chrono reading (chrono in sun had some issues)
34 - 2905
34.2 -2910
34.4 - 2935
34.6 - 2990
34.8 - 3000
35 - 2970
 

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It would help a little if the various posts would indicate caliber, i.e. 6 Dasher, 6 BR, 6.5x47, etc. Generally one can determine what it is based on the amount of powder being used but for safety the caliber would help some of us. Thanks for listening.
 
Could you tell me what barrel length and approx. what the temperature was when you shot your groups...............Thanks Chuckhunter

Chuck,

My barrel is a 28 inch Benchmark 8 twist and it was 82 degrees when I ran my initial test. I have checked seating depth with 40.4 grains of RL16 and 130 VLDs. It looks like this rifle really likes them jumped 25 thousandth or more. I went up to 41.6 grains of RL16 and started to hit another node. 300 yard group was just shy of 0.700 inch on Sunday noon. Around 72 degrees but heavy mirage. They were seated at 8 thousandth jump and I haven't loaded any hotter or seated any deeper yet.

I have some N140 to test too. You told me N540 worked well for your hunting load. I may test that too.

I will have this rifle up to Williamsport next spring. See you there.

Joe Dickson
 
400 yards

4 shots inside .6 inches
1 out made group 1.2 may have been me may not needless to say I'll be shooting it again
108berger bt r-16 34.4 .010 off

Chrono reading (chrono in sun had some issues)
34 - 2905
34.2 -2910
34.4 - 2935
34.6 - 2990
34.8 - 3000
35 - 2970


The 35.0 drop in velocity is normal. What your fixing to see is a pressure spike within .2-.4 grains and possibly a good bit of velocity increase. What's happening is from there your picking up your next node if your case can handle the pressure.
 
The 35.0 drop in velocity is normal. What your fixing to see is a pressure spike within .2-.4 grains and possibly a good bit of velocity increase. What's happening is from there your picking up your next node if your case can handle the pressure.

No pressure signs no flat primer or cratering no stuff bolt just didn't go any further and yes I have seen velocity drop with powder increase I could go high but 34.4 is what I'm working with currently
I jus yes my brass it's cleaning hopefully will get to shoot more this week
 
I see the velocity comparison to H4350 result in slightly higher velocities for the same charge weight. How does the volume compare to H4350 for a given charge? If you are loading a charge with H4350 that is at 105% can you achieve that same charge with Rx16 without more compression?
 
I see the velocity comparison to H4350 result in slightly higher velocities for the same charge weight. How does the volume compare to H4350 for a given charge? If you are loading a charge with H4350 that is at 105% can you achieve that same charge with Rx16 without more compression?


Read below
 
Last edited:
I see the velocity comparison to H4350 result in slightly higher velocities for the same charge weight. How does the volume compare to H4350 for a given charge? If you are loading a charge with H4350 that is at 105% can you achieve that same charge with Rx16 without more compression?


The density of RL16 is notably less than H4350 and would take more case volume for the same charge weight. Probably close to 5% more.
 
The density of RL16 is notably less than H4350 and would take more case volume for the same charge weight. Probably close to 5% more.


My bad yes you can achieve same velocity without crunching the powder on RL16 as you would with H4350.
I misread his question.
 
The density of RL16 is notably less than H4350 and would take more case volume for the same charge weight. Probably close to 5% more.

That is counter then what was posted earlier in this thread according the below RL 16 is heavier
An encouraging note for those that are running charges/seating depths that put the charge at/near case capacity is that Rl-16 has a higher density than H4350, 1.60 vs 1.55 g/cm3.
 

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