McGuire Ballistics field and terminal reports

[pods8 (Rugged Stitching)]

And that Hunter wins an award for the strangest elk hanging technique!

They probably gutted it and cut it in half so they could load it into a vehicle of some sort.

 

[SDHNTR]

All bullets are held to a tolerance of .5GR

That wasn’t exactly what I asked. But OK, let me be more specific…

So assuming same caliber, there is only a .5 gr difference between the two types? Only a half grain of difference between say a 30 cal single feed and a 30 cal mag feed bullet?

 

[SMC_GUIDE]

Bold part means the shank is left right? Just making sure I interpreted correctly. In those instances did you recover any of the petals?

Yes and yes

 

[SMC_GUIDE]

That wasn’t exactly what I asked. But OK, let me be more specific…

So assuming same caliber, there is only a .5 gr difference between the two types? Only a half grain of difference between say a 30 cal single feed and a 30 cal mag feed bullet?

No, all caliber weights are held to .5 of tolerance. Most are within +-.1GR Mag feed and single feed. I will weigh some tomorrow and put up.

 

[SMC_GUIDE]

They probably gutted it and cut it in half so they could load it into a vehicle of some sort.

No, trauma caused the elk to not be able to stay together. Fell apart while skinning and a hunter cut himself with a knife when it fell.

 

[SMC_GUIDE]

Which bullet was shot at 600+ yards and from what? Those appear to be two different bullets. And that Hunter wins an award for the strangest elk hanging technique!

Sorry ,7mm Remington Magnum and a 143GR Copper Rose Single Feed. The other bullet is a 6MM that failed to expand during impact testing and tumbled.

 

[SMC_GUIDE]

Yes and yes

This is a gel test that we did with a 6.5PRC and 125GR CRMF at 100 yards. Shows bullet disruption and how back of bullet stayed on straight line through nose forward. I'm not an expert in tumbling bullets but when I have seen it during testing the rarely stay on a straight line and can be very erratic directionally. That is our copper bullets. I'm not making a statement on other bullets.

 

[SDHNTR]

No, all caliber weights are held to .5 of tolerance. Most are within +-.1GR Mag feed and single feed. I will weigh some tomorrow and put up.

Interesting. So a .1gr weight difference makes for a 2-300 fps difference in min expansion velocity?

 

[Wrench]

Interesting. So a .1gr weight difference makes for a 2-300 fps difference in min expansion velocity?

Substitute "weight difference" with "meplat wall thickness".

 

[wind gypsy]

Interesting. So a .1gr weight difference makes for a 2-300 fps difference in min expansion velocity?

How thick do you picture copper needs to be in one small portion of a bullet to avoid getting crushed in a mag under recoil? How much do you imagine that copper weighs?

 

[Wapiti1]

Interesting. So a .1gr weight difference makes for a 2-300 fps difference in min expansion velocity?

These bullets have a hollow space behind a closed nose. The wall thickness/length of that hollow dictates the single feed verse mag feed designation. Now, the wall thickness doesn't have to be uniform, so you can play with steps or tapers of the wall to get outside dimensions to be equal with a different shape to the internal cavity. It's a clever design, IMO.

Jeremy

 

[Billy Goat]

What you got for .22 cal damage pics?




Asking for a friend.

 

[SDHNTR]

How thick do you picture copper needs to be in one small portion of a bullet to avoid getting crushed in a mag under recoil? How much do you imagine that copper weighs?

I honestly have no idea. Despite the appearance, those are genuine questions with no hidden agenda.

 

[SDHNTR]

Substitute "weight difference" with "meplat wall thickness".

Ok, yeah that makes sense. But why is everyone other than the manufacturer the only ones directly answering these questions?

 

[SDHNTR]

These bullets have a hollow space behind a closed nose. The wall thickness/length of that hollow dictates the single feed verse mag feed designation. Now, the wall thickness doesn't have to be uniform, so you can play with steps or tapers of the wall to get outside dimensions to be equal with a different shape to the internal cavity. It's a clever design, IMO.

Jeremy

Ok now we’re getting somewhere. That wording provides a good visual.

 

[Wrench]

Ok, yeah that makes sense. But why is everyone other than the manufacturer the only ones directly answering these questions?

I'm Sitting on the couch sick as a dog defending the internet today. Maybe Sam was working or some shit.

 

[Quicksilver]

Ok, yeah that makes sense. But why is everyone other than the manufacturer the only ones directly answering these questions?

The same reason everyone understands the bullet weight difference but you sometimes people are better explaining things in words than others. Some people understand those words better than others.

 

[Taudisio]

Ooh nice
Coyote—->prairie dog, can we get a chipmunk next?
Maybe then a hummingbird


Sent from my iPhone using Tapatalk

I got you.

 

[SDHNTR]

The same reason everyone understands the bullet weight difference but you sometimes people are better explaining things in words than others. Some people understand those words better than others.

Except no one ever explained there was a bullet weight difference, until I pried.

 

[Quicksilver]

Except no one ever explained there was a bullet weight difference, until I pried.

This is true, I meant after you mentioned it. But it sounds like the weight is negligible.