I have used 270 Federal Premium ammunition for years. At first, it was 110 or 130 grain ammo with Barnes TSX copper bullets. This ammo was the most accurate and devastating ammo ever. Federal discontinued using the Barnes TSX bullets, and provided the Trophy Cooper ammo (which was similar in accuracy and performance).

I am retired but worked as a natural resource professional for many years. However, I did hot select the copper bullet ammo over lead for environmental reasons, but rather because of the accuracy and performance. A 130 g copper bullet is larger than a 130 g lead bullet, and would therefore have more knockdown energy.

However, lead bullets are likewise great with accuracy and performance, but my rifle loves the copper ammo.

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Posted by Buster180

Member since Jun 2017

1455 posts

Posted on 11/5/19 at 2:53 pm to BayouTiger71

quote:
At first, it was 110 or 130 grain ammo with Barnes TSX copper bullets.

I have been shooting Barnes 130 grain out of my .270 for several years now. Sometimes I think that these bullets are too tough for small deer as expansion isn't always great.

I would like to try some 110 grain copper ammo but no one seems to make it anymore.

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Posted by Tigerhead

Member since Aug 2004

1176 posts

Posted on 11/5/19 at 5:35 pm to BayouTiger71

quote:
A 130 g copper bullet is larger than a 130 g lead bullet, and would therefore have more knockdown energy.

How so? 130g of mass is 130g of mass. All of the energy calculators I've seen use two numbers, mass (in grains) and velocity. I agree the copper bullet will be longer (larger) but it still weighs the same. Is there something I'm missing?

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Posted by Got Blaze

Youngsville

Member since Dec 2013

8772 posts

Posted on 11/5/19 at 6:02 pm to BayouTiger71

quote:
A 130 g copper bullet is larger than a 130 g lead bullet, and would therefore have more knockdown energy.

- .277 diameter is still .277 diameter.
- 130 grains is still 130 grains.
- bullet OAL could possibly be longer resulting in a higher ballistic coefficient which does not equal more knockdown power.
- if the diameter is > .277 then you would see major accuracy and safety issues trying to fit a .280 projectile down a steel .277 bore.

if your facts are correct, I want whatever you're smoking b/c I've been doing it all wrong