Anyone know where I could find the following:
dim tracer
M21 - headlight tracer
XM1022 - green bullet
MK257 - purple tip
apei - yellow/silver tip
416 barrett
408 cheytac
Also looking for a 14.5mm round.
14.5 Show up on Gunbroker and Auction Arms. Also I see them at most of the cartridge shows and larger gun shows.
The Dim Tracer is Pink Tip, "M17 (Dim) Tracer" is the designation. It wasn't accepted into service beyond a limited run lot. The Mk257 took its place in the .50 dim tracer line.
the M21 Headlight Tracer is WW2 vintage, and red tip, just like the M1, so virtually indistinguishable from M1 unless you have a box lable.
XM1022-Kinda sorta. There was more than one design in contention, the WCC version ended up on the market, when they didn't win the contract, so it's theoretically available. The version that won hasn't been released to service yet.
Mk257 is the API (Dim) Tracer and is a Purple/White tip, but easily confused with M20 APIT (Red/White tip). The only diff is the "Purple" is a deep red coloration. You have to have something to compare it to, to realize what it is, unless you have a can with the markings to ID it.
APEI-This is the FN competition for the Mk211, and hasn't gained much acceptance. You'd probably have to attend a European Cartridge show to hope to uncover one.
416 Barrett & 408 Cheytac are available from Ammo1 on Gunbroker, also the ammunition shows.