Changed the verbiage to P4-3 s it should have been. Thanks.
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Changed the verbiage to P4-3 s it should have been. Thanks.
I posted some time ago I have been trying without a lot of luck making Percussion caps using Barium Chlorate rather then Potassium chlorate I read a few articles about red Phosphorous and can not find a place to get it because of it's use in meth production?
Some of my reading also hit on using larger grains of fuel to get better firing success .
Here is a quote from link below you may find interesting :
With these facts in mind, we have developed 85 a noncorrosive priming composition which, like the potassium chlorate primer, contains only fuels and oxidizers that are nonexplosive in themselves. The sensitiveness of this priming composition depends on the use of red phosphorous. As a specific example, we have found the following mixture suitable for small arms primers: Percent Red phosphorous----------------------- 25 Barium nitrate-------------------- - .58 Antimony sulfide...--------------------- 17 This mixture may be blended and loaded into primer cups in the usual way. It has been found advantageous to use a small amount of glue or 50 gum as a binder for the pellet.
From:
https://www.freepatentsonline.com/2194480.html
According to Hatchers Notebook, the U.S. began using the FA-70 primer compound during WW1 because of misfires from the H-48 and FH-42 primers. The misfire problem was traced to excessive humidity causing sulfur and KClO3 to interact, forming sulfuric acid which degraded the primers.
FA-70 essentially replaced the sulfur with Lead Thiocyanate (AKA Lead Sulphocyanate), and added a pinch of TNT -
Potassium Chlorate .53
Antimony Sulfide . ...17
Lead Thiocyanate ... 25
TNT ......... .5
A bit off topic but has to do with old primers A friend mail ordered a 6.5 Mannlicher carbine just before GCA 68 took effect ,he paid the postman for the gun and a large box of ammo at 10 years old . A lot of that corrosive ammo would hangfire or misfire when we pulled the bullets the powder was ruined . We pulled some bullets dumped the powder and fired the primers they either made a pop , a slow sizzling sound or sizzled and popped loudly . We assumed the latter would have been a hangfire . When this ammo did go off right it shot well and sent that 160 grain long round nose bullet down range accurately . It also showed how badly a shooter flinched!