Alliant 2400 vs. VVn110 for Subloads

[buffetdestroyer]

I have developed a load for my 10.5" 1 in 8 twist AR barrel with 2400 that is subsonic with Sierra 220 gr Matchkings (7.5 grains) and is reliable in function and relatively quiet (sounds like an airgun).

I just got a scope yesterday and have not yet tried this load out for accuracy.

Is the Vihtavuori worth the cost in regards to accuracy out of an AR in 300 Fireball?

Also since 2400 is faster burning, is there a significant sound difference with the slower burning n110?

I'm curious since the Sierra manual recommends it for most loads as the most accurate (though the velocities were far from where mine are with the 2400).
________
JUSTIN BIEBER

[amafrank]

I don't know about the accuracy difference but the 2400 is quieter. I've been using it in the 300 and the 510 with very good results. According to chronograph data we worked up the 2400 has been the most consistant in the velocity dept.
At the moment I don't have a 300 to do any accuracy testing with so I can't help much with that angle....
The N110 is cleaner burning than most any of the powders I've tried but for the cost of it I don't think I'll be using it much anymore. H110 is out for sure due to the considerable variations in velocity and pressure that occur with changes in temp.
One other thing you might look into is H4227. Its a slower powder like the N110, its available and lower cost than the N110, it burns pretty clean and so far has been pretty consistant in the 510. If you want to try a slower powder its another possibility to look at.

Frank

[SgtCottle]

N110 (#60) is slower, produces less gas to have to muffle, than 2400 (#54) considering the range of powders used in this caliber, and therefore should produce less of a signature. I have been considering picking up a pound of Hodgdon's Longshot and seeing if there is any luck there. With the heavier (220g+) projectiles - there shouldn't be an issue with enough back pressure to cycle on pistol carbines, but we will just have to see.

I have recently worked up a real nice subsonic load using Reloader 7 and 168g Nolser Custom Competitions. It produces more of a signature than the heavier bullets, but is fun to let people shoot with because they are much cheaper. I have been impressed with it's performance - in a ten shot string it kept velocities at an average of 1049fps and a standard deviation of only 14fps. This load also cycles my 16" pistol length carbine very reliably and fill just about all the available room after seating the bullet.

I am currently waiting on a set of .308" dies from Richard Corbin so that I can make the heavier (250g+) bullets without paying $45/100. That way I can at least shoot them without shuddering every time I pull the trigger.

[rjones560]

Originally Posted by SgtCottle

N110 (#60) is slower, produces less gas to have to muffle, than 2400 (#54) considering the range of powders used in this caliber, and therefore should produce less of a signature. I have been considering picking up a pound of Hodgdon's Longshot and seeing if there is any luck there. With the heavier (220g+) projectiles - there shouldn't be an issue with enough back pressure to cycle on pistol carbines, but we will just have to see.

I have recently worked up a real nice subsonic load using Reloader 7 and 168g Nolser Custom Competitions. It produces more of a signature than the heavier bullets, but is fun to let people shoot with because they are much cheaper. I have been impressed with it's performance - in a ten shot string it kept velocities at an average of 1049fps and a standard deviation of only 14fps. This load also cycles my 16" pistol length carbine very reliably and fill just about all the available room after seating the bullet.

I am currently waiting on a set of .308" dies from Richard Corbin so that I can make the heavier (250g+) bullets without paying $45/100. That way I can at least shoot them without shuddering every time I pull the trigger.

Thanks for the insight on N110. I tried H110 for my first loads because I had it in stock and there was data available for it. It worked good for super sonic 240 grain match kings, but when I backed off to sub sonic velocities the ES went from 20 fps to 80 fps. Not satisfactory at all.

[alorton]

When I built my 300/221 the only powder I could find locally that was listed in Sierra's tables was the 2400. After reading online I wanted to try Lil Gun but couldn't find any so I tried out the 2400.

It worked very well for me. I use it for both subsonic and supersonic loads, it cycles the action well, and is fairly quiet. It is a bit dirty, but that is a small price to pay for reliable and quiet.