by Hoot » Sun Sep 23, 2012 7:55 pm
I still have part of a bottle of N110. All I can say is it is a strange powder. I too thought the slight burn rate edge would help with the 200s, but it only delivered performance a little short of Lil Gun in terms of accuracy and it threw granules of what appeared to be some kind of saw dust downrange. It wasn't unburned powder, but some inert substance the consistency of grains of salt all over my chrony. To this day, I don't know what to make of it. I've have never shot a powder either before or since then, that left whole burned granules in ample quantity that got sprayed downrange like that.
2400 will light off with a cooler primer. It worked well for me several years ago along with the 200 FTX and CCI BR4s. In the case of Lil Gun, I don't think you'll find or reduce your sooting with primers hotter than the 7 1/2. Seat those 200s to the cannelure and lay more taper crimp into it before trying a different primer. A mil of additional taper crimp makes a large difference in our application. Take one of your loaded 200s and see how many whacks it takes with an inertial puller to dislodge it. With a proper crimp, mine take between 6 and 7 good whacks.
I know it's easy for me to say, but it gets easier over time. Try not to let the sooting bother you or try a bottle of 2400. If you only have 7 1/2 primers, go with them and 2400. They're not going to detonate or anything. You will feel the difference in how it lights off immediately over what you feel with Lil Gun. You can sense the rapid rise in pressure. Unfortunately not only does it rise up to pressure faster, but it burns past peak faster, long before the bullet leaves the barrel and for that reason, you can get higher final velocities from Lil Gun, which uses more of the barrel to develop it's pressure. Annealing your cases will enable them to seal off a little easier and that does help with the sooting that accompanies lighter bullets.
Hoot
In Theory, there is no difference between theory and practice. In Practice, there is.