11-04-2023, 07:49 AM
This is my 1st post but I have been lurking here for a few years. I have been in the Grendel game for about 7 or 8 years.
This is the caliber that finally got me into reloading after years of wanting to get into it.
I started with a couple of Aero Precision 20 AR platform builds that have been absolute tac drivers with my hand loads and pretty much immediately made the Grendel one of my favorite calibers.
This past spring I put together a Howa Mini 20 Heavy Barrel action from Brownells on a Bell & Carlson M40 stock and upgraded with DPI bottom metal.
Been busy with work and getting one kid graduated from college and getting the second started in college. GIG EM! Anyway, finally got out this last weekend to shoot.
Wow is all I can say! This rifle is going to be a shooter
So far I have landed on 27.6 g AR-comp with 123 ELDM. I could probably go higher as I was not seeing anything remotely close to pressure signs.
I did decide to somewhat, for the first time ever, follow the break in procedure. I cleaned after every shot for the 1st ten but instead of cleaning after every two after the 1st ten shots I shot 2 more groups of 5 and cleaned after each group of 5.
Here is my ladder progression. Let me know if you guys are seeing around the same results.
Powder: AR Comp
Bullet: Hornady 123g ELDM
Primer: CCI 400
Brass: New never fired Starline brass / full prep (no anneal on new brass)
5 shot groups at 100 yds- will do 10 shot groups next trip.
27.0 g AR Comp
2420 FPS
Spread 26
SD 10
Group .52
27.2 G
2440 FPS
Spread 20
SD 8
Group .65
27.4 G
2448 FPS
spread 28
SD 9
Group .70
27.6 G
2461 FPS
Spread 17
SD 6
Group .48
This is the caliber that finally got me into reloading after years of wanting to get into it.
I started with a couple of Aero Precision 20 AR platform builds that have been absolute tac drivers with my hand loads and pretty much immediately made the Grendel one of my favorite calibers.
This past spring I put together a Howa Mini 20 Heavy Barrel action from Brownells on a Bell & Carlson M40 stock and upgraded with DPI bottom metal.
Been busy with work and getting one kid graduated from college and getting the second started in college. GIG EM! Anyway, finally got out this last weekend to shoot.
Wow is all I can say! This rifle is going to be a shooter
So far I have landed on 27.6 g AR-comp with 123 ELDM. I could probably go higher as I was not seeing anything remotely close to pressure signs.
I did decide to somewhat, for the first time ever, follow the break in procedure. I cleaned after every shot for the 1st ten but instead of cleaning after every two after the 1st ten shots I shot 2 more groups of 5 and cleaned after each group of 5.
Here is my ladder progression. Let me know if you guys are seeing around the same results.
Powder: AR Comp
Bullet: Hornady 123g ELDM
Primer: CCI 400
Brass: New never fired Starline brass / full prep (no anneal on new brass)
5 shot groups at 100 yds- will do 10 shot groups next trip.
27.0 g AR Comp
2420 FPS
Spread 26
SD 10
Group .52
27.2 G
2440 FPS
Spread 20
SD 8
Group .65
27.4 G
2448 FPS
spread 28
SD 9
Group .70
27.6 G
2461 FPS
Spread 17
SD 6
Group .48

