The Firing Line Forums - View Single Post - .223 load workups

IDT · June 27, 2013, 04:06 PM

Had all intentions of using the chrony today.

Loaded up 4 test batches of ammo last night :

All had the following specs except for the powder grain:

Bullet: 55gr HP Flat Tail (Generic Brand - Full jacket)
Case trim length - 1.746 (pre-sized)
C.O.A.L. - 2.222
Powder - AR-COMP
Weapon platform: AR-15 - 16" RECCE Barrel - 1:8 Twist - Mid Length Gas System - Suppressed (yes, I'm testing with a suppressor as that is how I shoot)

Batch 1 @ 24.5gr
Batch 2 @ 25gr
Batch 3 @ 25.3gr
Batch 4 @ 25.5

10 rounds per batch

At the 25.5 mark, it was a true compression load and I stopped.

But waking up this morning proved difficult, and it's still pouring the rain down - and I don't feel like toting everything to an indoor range and using the light diffuser on the chrony. So, this test will have to wait.

I'm going to load 4 batches with Hornady V-Max in 50 grains today starting at 22 grains and working up to 24.5...unless anyone has data for AR-COMP that says I'm at the max for those.

There is surprisingly little data for AR-COMP yet, even on loaddata.com and even less for the lighter bullets.

June 27, 2013, 04:06 PM	#1
IDT Member Join Date: November 6, 2011 Location: West Virginia Posts: 70	.223 load workups - anyone do it this way? Had all intentions of using the chrony today. Loaded up 4 test batches of ammo last night : All had the following specs except for the powder grain: Bullet: 55gr HP Flat Tail (Generic Brand - Full jacket) Case trim length - 1.746 (pre-sized) C.O.A.L. - 2.222 Powder - AR-COMP Weapon platform: AR-15 - 16" RECCE Barrel - 1:8 Twist - Mid Length Gas System - Suppressed (yes, I'm testing with a suppressor as that is how I shoot) Batch 1 @ 24.5gr Batch 2 @ 25gr Batch 3 @ 25.3gr Batch 4 @ 25.5 10 rounds per batch At the 25.5 mark, it was a true compression load and I stopped. But waking up this morning proved difficult, and it's still pouring the rain down - and I don't feel like toting everything to an indoor range and using the light diffuser on the chrony. So, this test will have to wait. I'm going to load 4 batches with Hornady V-Max in 50 grains today starting at 22 grains and working up to 24.5...unless anyone has data for AR-COMP that says I'm at the max for those. There is surprisingly little data for AR-COMP yet, even on loaddata.com and even less for the lighter bullets.