McGuire Ballistics .224 Heavy/High BC bullet development...

[can1010]

We have not had problems with the 1:7 but I would not hold my breath on a 1:8.

am waiting to test in my 1-7 22ARC bolt gun, at 71gr I am thinking 3150-3200 will be possible

 

[McGuireBallistics]

Boar taken with 22 Creedmoor and 71GR Copper Rose.
250 yards
Bullet entrance was back of lung, traveled through stomach and extited right in front of back leg. Boar spun and went up hill 30 yards, stopped and went down. Probably 30 seconds or so. Pictures are in order of bullet path.

 

[McGuireBallistics]

One of your first posts mentioned you had sent some out for testing in 8twist is why I asked.

I have not got those out yet but will see hopefully in a week or so.

 

[McGuireBallistics]

Another boar taken with 22 Creedmoor and 71GR Copper Rose. This one was a little more of a crap show. First shot was 500 yards. Bullet hit front of sholder and blew it to peices, but hit was infront of thoracic cavity. I could tell hit was marginal. I ran to where pig had dropped into a canyon. He stepped up other side 20 yards from me and I put a shot in neck. Boar dropped a d I followed up with behind sholder. Bullet in rib cage is entrance and my hand fits through. Boar made it roughly 30 yards before I got there.

 

[ButterBean]

Another boar taken with 22 Creedmoor and 71GR Copper Rose. This one was a little more of a crap show. First shot was 500 yards. Bullet hit front of sholder and blew it to peices, but hit was infront of thoracic cavity. I could tell hit was marginal. I ran to where pig had dropped into a canyon. He stepped up other side 20 yards from me and I put a shot in neck. Boar dropped a d I followed up with behind sholder. Bullet in rib cage is entrance and my hand fits through. Boar made it roughly 30 yards before I got there.

Them pigs are tough

 

[McGuireBallistics]

Them pigs are tough

Some of the toughest.

 

[Bghunter338]

Another boar taken with 22 Creedmoor and 71GR Copper Rose. This one was a little more of a crap show. First shot was 500 yards. Bullet hit front of sholder and blew it to peices, but hit was infront of thoracic cavity. I could tell hit was marginal. I ran to where pig had dropped into a canyon. He stepped up other side 20 yards from me and I put a shot in neck. Boar dropped a d I followed up with behind sholder. Bullet in rib cage is entrance and my hand fits through. Boar made it roughly 30 yards before I got there.

Congratulations, way to stick with him!

 

[Bghunter338]

I might have to give some of these a try in my 22-250ai.

 

[Bghunter338]

When will these be available?

 

[McGuireBallistics]

When will these be available?

I'm going to run them in my guide gun and get some more animals under it as well as get them out to our testers. I want to really dial in BC and make sure there is not something I'm missing terminally. So far I am very happy with them but I honestly have very little experience with little guns and need some feedback from my guys that do. Probably no longer than a month. Thank you for the interest and I'll keep you updated.

 

[TheSouthpaw]

I have not sent any out for testing. We are settling on a length of 1.250. I am pretty sure a 1:7 will be necessary but we shall have to see.

The 88gr ELDM is 1.244 and needs a 7.5tw, 8tw is marginal. I think you are going to leave a lot of the market untouched by not producing it to stabalize consistently in the 8tw which is SAAMI for 22cm. The 80gr ELDM is 1.153, works great in 8tw even at .223 velocities.

 

[can1010]

Another boar taken with 22 Creedmoor and 71GR Copper Rose. This one was a little more of a crap show. First shot was 500 yards. Bullet hit front of sholder and blew it to peices, but hit was infront of thoracic cavity. I could tell hit was marginal. I ran to where pig had dropped into a canyon. He stepped up other side 20 yards from me and I put a shot in neck. Boar dropped a d I followed up with behind sholder. Bullet in rib cage is entrance and my hand fits through. Boar made it roughly 30 yards before I got there.

what muzzle velocity you getting with the creed and possible impact velocity at 500yds?

have you recovered any more bullets, are the petals still sheering off and are all pieces exiting?
just trying to determine if there is a velocity window where they stay intact and where petals shear off.

 

[McGuireBallistics]

The 88gr ELDM is 1.244 and needs a 7.5tw, 8tw is marginal. I think you are going to leave a lot of the market untouched by not producing it to stabalize consistently in the 8tw which is SAAMI for 22cm. The 80gr ELDM is 1.153, works great in 8tw even at .223 velocities.

I'm sure we are leaving allot of the market out but I feel like basing our .224 on a 1:8 will highly degrade performance. When we develop a bullet we think of top end performance first and unfortunately that can cost us. I have some slower twist rate .224s on deck as well.

 

[McGuireBallistics]

what muzzle velocity you getting with the creed and possible impact velocity at 500yds?

have you recovered any more bullets, are the petals still sheering off and are all pieces exiting?
just trying to determine if there is a velocity window where they stay intact and where petals shear off.

2360 is impact velocity based on our profile we are running. I am just guessing but probably 1800-1900 before they hold together. I have more testing to come.