The main advantage of those roll caps and other "Armstrong mixes" is it appears to work well in really cold conditions and it's easy to make a really hot primers with the stuff. The Russians used it into the 1970s or 1980s because it was still about 100% reliable at -60. Armstrong mix works so well your gun will fail before the primers do. Not really a problem for me.
There is one very REAL issue with Armstrong Mix, when it is made using Sulfur as the fuel instead of Red Phosphorus... The Potassium Chlorate and Sulfur Mix will self-Detonate after it is mixed if not used in length of time...I had a friend in Jr. High School who found this out “The Hard Way” when he blew up his bedroom, after storing his 20 Gram sample in his desk drawer... Needless to say his parents were just a bit put off, having to clean up the mess and replace some windows, after the Fire Department left, and then explain to them what had happened... And he couldn’t sit down for a week... Further research lead to a better understanding of this critical fact, after the fact... Also Red Phophorus is real scetchy to handle should one make any number of critical mistakes... Just Say’en, YMMV...
As far as I can tell phosphorus mix isn't popular at all. From what I found the US military industrial complex only used the phosphorus mix for a year. I looked into using a phosphorus mix for signaling devices and decided not to because it's regarded as having a stable shelf life of less than 0. The sulfur mixes have been used by everyone on earth as priming compound at one point.
I wouldn’t want to undertake that research, to find out, but likely you would need a very BIG HAMMER, AND a very significant amount of force, to get detonation... Figure the FootPounds of energy across the surface area of a supersonic projectile from a Rifle, as compared to the FootPounds of energy imparted by a BIG Hammer, over the surface area of the hammers head... When in college, I wrote a paper on a similar subject.. Take a 2 oz bottle of Nitroglycerin thrown at a 10ft high. brick wall, by a Big League Pitcher... When you do the math, If the bottle is Polyethylene, the pitcher can’t throw it hard enough to get it to detonate... If the bottle is Glass, the Pitcher can not run away fast enough to not get hit by the flying bricks... Now the $64000 question... Why is this true?
Could have a lot to do with resilience of plastic absorbing a significant amount of the force on impact. Or not. Assuming I am strong enough to swing the hammer hard enough, well, I ain't so the point is moot. BUT, I might be fast enough as well as strong enough.
Even though this mixture is corrosive, just follow the directions and use acetone with some shellac as a binder,Prime-All Repriming Compound
I'll probably try the rim fire mix first since I got lead nitrate, antimony sulfide and barium nitrate on the way and will probably order sodium Hypophosphate, probably tonight. Looks like you make the lead Hypophosphate by preparing a solution of sodium Hypophosphate and slowly add lead nitrate. This will instantly make lead Hypophosphate that will precipitate out. What ever you do don't put additional lead nitrate in the mix. Any excess lead nitrate left with the lead Hypophosphate will form lead nitro-Hypophosphate and that would be really bad. I guess it would be a good idea to check for accidental, excess lead nitro-Hypophosphate formation by drying a tiny sample and wacking it with a hammer. Do not pour the sodium Hypophosphate into the lead nitrate. Putting sodium Hypophosphate in a lead nitrate rich environment will form large quantities of lead nitro-Hypophosphate.
Ok, since none of you got the answer correct even though only a couple tried.. The answer is: Surface tension... In the Glass bottle The liquid forms a meniscus due to Surface Tention and climbs up the sides of the container, and becomes very thin, which increases it’s sensitivity to shock, significantly... In the Poly bottle it does the exact opposite, and forms a slight Dome on the liquid, which decreases the sensitivity to shock just a little...The moral to this excersize is you NEVER, EVER, transport Nitroglycerine in Glass Containers... This was the cause of MANY transport accidents back in the early days of Commercial Blasting with Nitro....
I think I need to get a different priming tool. I have the old Lee hand held handy prime tool. I'm thing get something that bolts to a table and I can operate it with one hand because I'm going to set off a primer or 2 trying to seat them.
I use the setup on my RCBS RockCrusher, and do it while resizing and decaping during the first operation, for Run of the mill loading or reloading... If it is for High Accuracy, Long Range rounds it is done just after case volume lot grouping, of the cases and just before Powder loading, and pre-projectile weight measurements..
Yeah I think I will just get an rcbs primer ram. Another primer type is Picric acid derivative primers. You make the picric acid with aspirin, potassium nitrate and sulfuric acid, see the appeal? Then turn the picric acid into potassium picric with potassium carbonate. It gives off some nasty byproduct gasses and is a multi step process. The remaining potassium picric is fairly harmless as long as the picric acid or potassium picric doesn't react with copper. Then when you mix potassium picric with lead (iv) oxide aka PbO2 and after its in primer cups activate it with water and form lead picric and potassium nitrate. It's mixed with other stuff too but that's the reaction which makes "the stuff" after drying.
The issue with Lead Picrate and Picric Acid. is it turns into Copper Picrate in Copper Priming Cups, after a time or in the presence of High humidity... Nothing you want to have around if you gots any brains in Chemistry at all... Nobody use or stores Picric Acid any more, especially in High School Chemistry Labs, where it was used as a dye in lots of experiments, because the kids dump the stuff down the Lab drains and it reacts with the Copper pipes , and then detonates at all odd hours and causes quite a mess... That became very evident back in the 60’s and 70’s... In those days it was NOTHING to find a pound or two of reagent Picric Acid in a Glass Container, in the backroom of a High School Chemistry Classroon... Not any more...
Better keep it dry then. I can see why everyone uses lead styphanate but the precursors are a little harder to get. That's esplains why the military industrial complex used nickel plated primers when constructing lead picric primers, it keeps any unreacted picric acid away from reacting with copper in the brass primer cup. I'll keep save a good stash of the nickel primers for later, just incase...
Prime all seems to be an Armstrong mix. Potassium chlorate, antimony sulfide, ground glass, sulfur and maybe some aluminum powder.
Hey,I actually saw 4 boxers of LG Pistol on the shelf today 60 for the CCI brick 55 for the LG Pistol feds...
Yep looks like that prime-all mix is in stock, it shipped Friday. I dusted of my ultrasonic cleaner and I'm starting to take apart and clean used primers. What I really need is a wet rotory tumbler and stainless steel media. I have a rock tumbler I got from my dad and ordered SS pins and jewlers SS media.
