Rounds 0.22in Flashcards
What are Rounds 0.22in used for?
1 - Small bore competitions
2 - Sub-calibre training
3 - Personal protection.
What In-Service weapon systems use Rounds 0.22in?
1 - Rifle .22in No 8
2 - Cadet Rifle 5.56mm L98A1/A2 (Conversion Kit)
3 - Rifle 5.56mm L85A1/A2 (Conversion Kit)
4 - Pistol Automatic .22in L66A
State the 3 types of 0.22in SAA currently in service.
1 - Round .22in Ball L5A1
2 - Round .22in Ball Tenex L9A2
3 - Round .22in Tracer L8A1
State the characteristics of the Round .22in Ball.
Round nose Lead bullet & 1.1% Antimony 3 circumferential grooves Almost straight sided Concave-based for set-up (base expands outward to provide forward obturation) Self-lubricating with paraffin wax.
What is the purpose of adding Antimony to the lead bullet in the round .22in Ball?
Antimony gives strength and prevents shrinking when cast.
Describe the construction of the Cartridge Case for the round .22in Ball.
Deep drawn from cartridge brass
A hollow rim is formed round inside of base and a non-corrosive rimfire initiating composition (lead styphnate and barium nitrate) is spun into the rim.
What substances are used as the rimfire initiating composition?
Lead styphnate and barium nitrate.
In what ways does the Round .22in Tracer differ from the Round .22in Ball?
They are exactly the same except the Round .22in Tracer has a tracer cavity machined into the rear into which a tracer composition is pressed.
In what ways does the Round .22in Tenex differ from the Round .22in Ball?
They are dimensionally the same but the Tenex is manufactured to a greater deal of precision at every stage of production.
The Tenex round also uses beeswax and tallow (beef/mutton fat) as a lubricant instead of paraffin wax.
Why is the Round .22in Tenex manufactured to a greater deal of precision at every stage of production?
To ensure the highest possible specification for competition shooting.
