Sensitivity of RL15 compared to Varget

[AckleyImproved]

Hi

As I have just received my Dasher, and might add the brass work is huge, its getting closer to choosing my powder.

I understand that Varget is steady in temperature sensitive, but how does RL15 compare in the sensitivity stakes.

I have chosen the CCI BR4 primers, and now the choice between Varget and RL15.

Cheers
AI

 

[AckleyImproved]

Thanks for the info. I will go the RL15... and see how I fair.

I plan on using the Sierra 107's. What powder weight are you fellas getting to with them using RL15? The usual 33-34 grains?

Also, for a fireforming load, how much of RL15? 28-29 grains?

Cheers
AI

 

[rhaney2]

AI,

I was always a huge fan of Varget. Temperature sensitivity is the best from Varget then any other powder that I know of is why. But in the last 3 years, I have became very upset with Varget's inconsistency from Lot to Lot. One Lot moved 105 Scenar's to 3035-fps in my Dasher, but another Lot would only move them 2980-fps at the same charge and showed more sign of pressure.

This same Lot that produced 3035-fps was getting hard on the primer pockets. While N140 and RL-15 produced even faster velocity,3030 to 3070-fps)with less pressure signs and easy on the primer pockets.

With 115-DTAC's I get 2985 to 3015-fps from RL-15 at 33.1gr depending on Temperature and 2955 to 2985 with N140 at the same charge. I could not load Varget and the 115's to any velocity
over 2930-fps with out pressure and trashing the primer pockets,but it could have just been the Lot of Varget being a Fast Lot).
RL-15 shows the least pressure for me and the fastest velocities from 105/107/115 bullets.

A fire-formong load of Varget and 105 A-Max's that I use to fire-form only, in my Dasher barrels, is very very accurate. 28.5 gr and CCI-240's with +.025" Jam seating depth.

Happy Shooting
Donovan

I cannot get to velocity with varget without getting pressure problems.
also,i use a step methoed to fireform brass,i expand the 6br neck to 6.5 and then neck it back down to 6mm,50% of the neck),that gives me a false shoulder.
I use 16 grains of red dot powder and a cleaning patch pushed down over the powder and fire,it blows the shoulder out to almost the correct position and one more firing does it with a bullet and 32 grains of reloader 15 and cheaper hunting bullet or match bullet.
I use 115 grain bergers and get aprox 3000 fps at 33.8 grains of re-15.

 

[AckleyImproved]

Hi

What I am going to do is expand to 6.5, then back to 6mm to create the false shoulder.

From the dasher reamer drawing, the case length is 1.555", and the length to shoulder is 1.3099". I will be sizing back down to 6mm where this 1.3099" is, which for me is definitely more than 50% of the neck, more like 75%!

Then I will be taking dmoran's advice and putting 28g of RL15, and jamming a 107MK about 0.020.

That should work!

Cheers
AI