McGuire Ballistics .277 High BC/Heavy hunting bullet

McGuireBallistics · Nov 14, 2024

We will start on a heavier high BC .277 bullets through the winter. Waiting on components to begin. We are open to input. This will be roughly the bullet we start with.
.277 Dia
1.600 Length
150ish Grain weight

Lou270 · Nov 14, 2024

Excellent! Hope works in 1-8 twist. Would think something in the 155-160 range. Not sure could go heavier than that without sacrificing bc like the heavier Barnes or needing more twist

Lou

McGuireBallistics · Nov 14, 2024

Lou270 said:
Excellent! Hope works in 1-8 twist. Would think something in the 155-160 range. Not sure could go heavier than that without sacrificing bc like the heavier Barnes or needing more twist

Lou

It most likely will be roughly around 140-150 grains but we will see. I think any heavier than that will actually work against it. We will be basing and using a 1:8 twist for testing.

Lou270 · Nov 14, 2024

McGuireBallistics said:
It most likely will be roughly around 140-150 grains but we will see. I think any heavier than that will actually work against it. We will be basing and using a 1:8 twist for testing.

That makes sense. I did not know where the range was but figured at some point you can't add weight without sacrificing BC.

Lou

akmtnhnt · Nov 14, 2024

Excellent, will be ordering some to try. What do you think the BC will be?

Toyotaon40s · Nov 14, 2024

That's pretty cool, makes a 6.8western a lot more appealing

Bghunter338 · Nov 14, 2024

Sure wish it was a 160gr!!!

Nemesis1264 · Nov 15, 2024

I have a 1-7.5 Brux I might try it in.

can1010 · Nov 15, 2024

a fast twist 277-308 or 277 fury would be interesting depending on minimum velocity for expansion. too bad I retired my 270-338rum imp.

JAYgs8163 · Nov 15, 2024

Count me in. My new 270WSM LongAction would like a steady diet of those!!! That along with the new ADG brass should be a killer combo!

skipglo · Nov 15, 2024

Toyotaon40s said:
That's pretty cool, makes a 6.8western a lot more appealing

6.8 Western and appealing used in the same sentence....... interesting!

McGuireBallistics · Nov 15, 2024

akmtnhnt said:
Excellent, will be ordering some to try. What do you think the BC will be?

I am hoping for mid .600s G1 range.

JAYgs8163 · Nov 15, 2024

skipglo said:
6.8 Western and appealing used in the same sentence....... interesting!

ADG must think so!!

K.E.C. Darkside · Nov 15, 2024

McGuireBallistics said:
It most likely will be roughly around 140-150 grains but we will see. I think any heavier than that will actually work against it. We will be basing and using a 1:8 twist for testing.

GREAT
I need something in that weight.
Tag I'm in.

McGuire Ballistics .277 High BC/Heavy hunting bullet

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