Jump to content

M1A ammo selection. Which bullet weight has given you the best performance?

Recommended Posts

I picked up a standard M1A from a forum member recently. I have a handful of bolt action rifles in 7.62x51 but this is my first semi in that caliber.

I don't expect to be a "thousand yard shooter" but it would be nice to reach out past 350 on occasion.

I've read opinions endorsing everything from 110gr through 180gr. More than one person has implied that going over 165gr gets hard on the gas operated system without changes in gas porting.

I'd prefer not to have to change any parts or risk rifle damage, so I doubt I'd regularly use the heaviest rounds.

So, I'm probably going to run a series of 147 & 165gr rounds from various manufacturers through it for evaluation.

Just thought I'd see what you fellas have come up with.





Edited by jaytex1969
Link to comment
  • Replies 1
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Posted Images

The 147 gr FMJ is the standard military loading. Most rifles do well with this load and some rifles can be very accurate with it. There's still some Mil-surp stuff out there. I've had good results with South African, Radway Green and Australian ammo. Avoid that Indian crap like the plague. 💩 

The majority of target loads use a 168 gr bullet with the Sierra BTHP being the accuracy standard. Federal specifically loads their Match ammo with the Sierra bullet rather than one of their own. 

I don't suggest using anything lighter and certainly nothing heavier in the M1A. Heavier bullets can lead to bent operating rods. 

Simply put, you need to try different loads to see what your rifle likes. 

Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


Tennessee Gun Owners (TNGunOwners.com) is the premier Community and Discussion Forum for gun owners, firearm enthusiasts, sportsmen and Second Amendment proponents in the state of Tennessee and surrounding region.

TNGunOwners.com (TGO) is a presentation of Enthusiast Productions. The TGO state flag logo and the TGO tri-hole "icon" logo are trademarks of Tennessee Gun Owners. The TGO logos and all content presented on this site may not be reproduced in any form without express written permission. The opinions expressed on TGO are those of their authors and do not necessarily reflect those of the site's owners or staff.

Before engaging in any transaction of goods or services on TGO, all parties involved must know and follow the local, state and Federal laws regarding those transactions. TGO makes no claims, guarantees or assurances regarding any such transactions.

  • Create New...

Important Information

By using this site, you agree to the following.
Terms of Use | Privacy Policy | Guidelines
We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.