Range Report Did this bullet come apart in the air?

[leadbullet]

Re: Did this bullet come apart in the air?

I have a melonited, Benchmark barrel in 243 AI, I push sierra 95 gr at 3200 and it shoots under 1/2 MOA at 600 yds. I haven't lost a bullet yet in over 700 rds, it took a while to find the right load though as fouling was not being removed properly, which is my fault not the barrel.
I was told by much more knowledgeable shooters that certain powder like Varget, H4831 SC etc leave a ring of carbon in the barrel up to 12 inches that is very hard and squeezes the bullets a bit, that results in loss of accuracy.
hope this helps.

 

[Tactical Support]

Re: Did this bullet come apart in the air?

Barrel being melonited was not the problem here a twisted barrel was.

 

[kennyg]

Re: Did this bullet come apart in the air?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: attherange</div><div class="ubbcode-body">I have a melonited, Benchmark barrel in 243 AI, I push sierra 95 gr at 3200 and it shoots under 1/2 MOA at 600 yds. I haven't lost a bullet yet in over 700 rds, it took a while to find the right load though as fouling was not being removed properly, which is my fault not the barrel.
I was told by much more knowledgeable shooters that certain powder like Varget, H4831 SC etc leave a ring of carbon in the barrel up to 12 inches that is very hard and squeezes the bullets a bit, that results in loss of accuracy.
hope this helps.</div></div> Is this carbon ring problem common in any barrel, or specifically a melonited one?

 

[*Nine]

Re: Did this bullet come apart in the air?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tactical Support</div><div class="ubbcode-body">Another thing to check. I have a customer bring me a barrel that he had a brake installed somewhere it too was melonited and sending bullets everywhere.

What I found was the brake was overtightened as it was being timed and twisted the threaded portion of barrel. We cut the barrel and crowned it went back to normal just a bit shorter now. The Melonite was tough on the inserts.</div></div>

Benchmark installed the brake on this gun, and the brake doesn't have to be torqued to be timed since it has been slotted for a clamp screw. I just have to spin it on by hand, then snug the clamp screw down.

 

[memilanuk]

Re: Did this bullet come apart in the air?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kgw43</div><div class="ubbcode-body"> Is this carbon ring problem common in any barrel, or specifically a melonited one? </div></div>

More related to caliber (overbore) and powder choice than anything. Should have nothing at all to do with barrel treatments.

 

[Jerry m]

Re: Did this bullet come apart in the air?

Please explain the physics of bending a bullet in mid air? Disintegrating due to speed I understand, not the bending in flight.

 

[kennyg]

Re: Did this bullet come apart in the air?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jerry M</div><div class="ubbcode-body">Please explain the physics of bending a bullet in mid air? Disintegrating due to speed I understand, not the bending in flight. </div></div> I think the bullet was probably tumbling and hit the target sideways.

 

[kennyg]

Re: Did this bullet come apart in the air?



More related to caliber (overbore) and powder choice than anything. Should have nothing at all to do with barrel treatments.[/quote]

Okay thanks for clearing that up for me.

 

[ArcticLight]

Re: Did this bullet come apart in the air?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jerry M</div><div class="ubbcode-body">Please explain the physics of bending a bullet in mid air? Disintegrating due to speed I understand, not the bending in flight. </div></div>

I said the bending in mid-air, wek now that is impossible, it just "Looked" that way from the photograph

Keyholing happens when a bullet either strikes something or comes back out of supersonic speed- have heard the shock wave can cause it to tumble.

I've seen them do it and heard the twaaaaaiiiiiiiiiiiiiiiii type sound when it happens LOL