155 gr bullet loads m1a

Grump · 04-29-2010, 10:05 PM

What are your results?

Hornady Match ammo with A-Maxes shoots MOA or better, but I can't get reloads with SMKs (older 2155), Noslers, A-Maxes, or even Bergers (found a hot deal on their first version) to group tight.

Best is about 1.1 inches at 100 yards, rare and not very repeatable. Most are 1.4-1.8 inches. Some are 2.0-2.3. Hot-rodded one load with A-Maxes and 3 shots went into 3.5 inches.

The barrel time shown by QuickLOAD for the powders I've used are in the vicinity what another source says is halfway between "optimum barrel time" nodes for a 22-inch barrel. Maybe there's something to that after all, but my 175 and 178-grain loads are shooting .6 to .9 inches at 100 yards quite reliably, and they're not on the supposed OBT node either.

For me, it's so much for the theory that lighter bullets do better in a 1:12 twist. They don't, but the 175s do.

Can any of you get the 155s to group, and if so, how?

04-29-2010, 10:05 PM	#1
Grump Senior Member Join Date: Jul 2004 Posts: 1,021	Specific to M1A types--155-gr Bullets? What are your results? Hornady Match ammo with A-Maxes shoots MOA or better, but I can't get reloads with SMKs (older 2155), Noslers, A-Maxes, or even Bergers (found a hot deal on their first version) to group tight. Best is about 1.1 inches at 100 yards, rare and not very repeatable. Most are 1.4-1.8 inches. Some are 2.0-2.3. Hot-rodded one load with A-Maxes and 3 shots went into 3.5 inches. The barrel time shown by QuickLOAD for the powders I've used are in the vicinity what another source says is halfway between "optimum barrel time" nodes for a 22-inch barrel. Maybe there's something to that after all, but my 175 and 178-grain loads are shooting .6 to .9 inches at 100 yards quite reliably, and they're not on the supposed OBT node either. For me, it's so much for the theory that lighter bullets do better in a 1:12 twist. They don't, but the 175s do. Can any of you get the 155s to group, and if so, how?

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
If you could own any specific firearm from any epoch in history,	WaltGraham	Gun Talk	46	08-08-2010 10:10 AM
Specific Ammo for the M1	SpartanWarriorXIII	M1 Garand	13	10-26-2008 09:16 AM
Specific 1911 type recommendations?	neisse	Handguns	23	04-28-2006 12:15 PM
Source for S&W parts? Looking for a specific part	Ridge Runner	Handguns	17	01-01-2006 05:44 AM
Specific suggestions for CCW holsters and IDPA?	John134	Gun Talk	10	09-22-2004 12:47 PM

155 gr bullet loads m1a

m1a 155 gr loads

m1a 155 grain loads

m1a with 155 grain bullets

m1a with 155gr bullets