PTRS/PTRD 14.5x114 Ammo poll
- Thread starter rommelrommel
- Start date
Warning on 14.5mm Ammunition
You realize that that the14.5 mm PRTD Ammunition is not the same as the 14.5 mm ammunition that is currently produced that is used in the DSHK 14.5 mm machine gun. Using Current 14.5 mm machine gun ammunition in the PRTD is at worst a Catastrophic Failure the least is that your PRTD will be damaged and have to be used as ornamental display.On Monday I talked to gentleman named Steve who lives in Las Vegas that has a PRTD and a DSHK he showed me what happened to a PTRD that used current 14.5 mm machine gun ammunition that was fired in a PRTD lets say the guy was lucky to walk away alive. The current loads in the 14.5 mm machine gun are not designed for operation in the PRTD this due to the fact that the chamber pressures in the PRTD were never designed to handle this pressure.
You realize that that the14.5 mm PRTD Ammunition is not the same as the 14.5 mm ammunition that is currently produced that is used in the DSHK 14.5 mm machine gun. Using Current 14.5 mm machine gun ammunition in the PRTD is at worst a Catastrophic Failure the least is that your PRTD will be damaged and have to be used as ornamental display.On Monday I talked to gentleman named Steve who lives in Las Vegas that has a PRTD and a DSHK he showed me what happened to a PTRD that used current 14.5 mm machine gun ammunition that was fired in a PRTD lets say the guy was lucky to walk away alive. The current loads in the 14.5 mm machine gun are not designed for operation in the PRTD this due to the fact that the chamber pressures in the PRTD were never designed to handle this pressure.
Dshk use the 12.7. KPV uses the 14.5.
What data are you using that shows a difference in specs for the 14.5? I would be interested in any info.
Since the 14.5 is not common in the US, there is a derth of load data.
What data are you using that shows a difference in specs for the 14.5? I would be interested in any info.
Since the 14.5 is not common in the US, there is a derth of load data.
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The cartridge for the machine gun and PTRD/S is the same cartridge. It has a design pressure of 52,000 psi, which is a very common operating pressure. Most 20mm cartridges use design pressures in excess of 65k psi. Even the 7.62.54R uses a design pressure of 56k psi. The 12.7 x 108 Russ. DShK has a design pressure of 46k psi and the 50 BMG has a design pressure of 54k psi.
If anything, the special armour piercing rounds would have been loaded to a higher pressure for greater performance.
The PTRD that blew up must just have had faulty steel. I doubt the machine gun rounds are loaded to any higher pressure, because then they would begin to have problems of sticky extraction and cartridge heads being ripped off.
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I did read a brief note from an article reposted on the net somewhere about the modern stuff being hotter. It did not claim that any guns had blowed up, just that shooters should watch for increased headspace.
Many years ago, long before I actually got my PTRD, I was interested enough in ATR's to write to Ian V Hogg about such things. I specifically asked if the modern 14.5x114mm was safe to use. He did not know for sure, but suggested a long string for the first few rounds!
Many years ago, long before I actually got my PTRD, I was interested enough in ATR's to write to Ian V Hogg about such things. I specifically asked if the modern 14.5x114mm was safe to use. He did not know for sure, but suggested a long string for the first few rounds!
I talked to Steve last night about the PRTD that came apart it was a head space issue that caused the KB from firing the MG ammo thru it .Remember these rifles were built before many of you were born and at a time when Quality Control was almost non existent and Metalurgy was akin to Black Magic
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The only place that I know of is big sky surplus in the States.
Navy Gunner
Navy Gunner
Big Sky must be on the top of the search engines becuase that is the name that keeps getting mentioned here.
I have seen negative comments on some other (US) forums about BSS.
Having said that, when I dropped into BSS in Spokane many years ago, they treated me OK. However at the time I didnt have a PTRD, so didn't ask about 14.5 brass.
I have seen negative comments on some other (US) forums about BSS.
Having said that, when I dropped into BSS in Spokane many years ago, they treated me OK. However at the time I didnt have a PTRD, so didn't ask about 14.5 brass.
Big Sky seems uninterested in business because after calling them 10+ times this week and leaving messages for them to call me back, I have yet to speak to a real liver person from the store. Guess they don't like money??
Anyway, I found 15 brass cases from another source that I am going to get shipped to me. (no, not coming from the US)
Anyway, I found 15 brass cases from another source that I am going to get shipped to me. (no, not coming from the US)
