BH209 and very cold temps.

[Grouse]

My T/C Triumph and my 50cal Knight Disc Elite with 110grns of BH209, 250grn SST, short black Harvester sabot, and a federal 209A primer spent the night outside Thursday night. Thursday night was -6 degrees and right now was -3 degrees. I decided to shoot the guns tonight.

The Knight was first. The gun did go off but with a pretty good delay. I was surprised but in away not. I reloaded the Knight with a short black mmp sabot and it's back outside.

The Triumph is back in the gun cabinet cleaned and put away. No hesitation at all. I do believe so far the tighter load in the Triumph is the main difference. Saturday i will know for sure.

BTW- Both guns were still on target at 75yds.

 

[hjbuys]

Thanks for the report. It'll be interesting to see if cold weather really becomes an issue with BH209.

 

[alphaburnt]

Grouse, was the Knight with FPJs or the conversion?

 

[Grouse]

The FPJ plug.

 

[NimrodRx]

I have a tendancy to believe that it could be more of a problem with moisture than with temp. I just can't wrap my head around why the cold would cause a hangfire. Moisture (in the form of precip or condensation) working its way pass the sabot, that I get.

What do you think?

 

[wayles]

bh209

My .45 knight disc extream under equal if not worse conditions and temp. Loaded at least 2 weeks fired fine to take a doe. I believe the difference is the non FPJ. The plastic jackets hung fired from the get go even during much warmer weather. YMMD
Wayles

 

[Grouse]

I really believe the tighter MMP sabot will make the difference. All knight barrels are loose in comparison to T/C. Which was excellant for 777.

 

[jsteurrys]

I believe it has a lot to do with sabot fit and the primer used. I still need to do more testing.

 

[Doohan]

I have had no issues with BH 209 in any of my guns. Never a misfire yet. 8 lbs and counting.

I also believe the Knight Extreme MHC to have a tighter bore than the standard gun.

 

[skamaniac]

All knight barrels are loose in comparison to T/C. Which was excellant for 777.

But isn't true that 777 is supose to be a water/condensation sponge? If that is true, then seems like the Knight loaded with 777 and a loose sabot would be more susceptible to hang fires than BH209. How about testing that Knight with 777 also?

I leave my White loaded with slip fit conicals outside frequently during cold/damp/snowy conditions but never without a condom over the muzzle and Saran wrap around the breech.

 

[Grouse]

How about testing that Knight with 777 also?

Already have, no issues at all.

 

[Grouse]

The temp right now is -7 degrees. The 50cal Knight Disc Elite went off with out hesitation with the tighter short black mmp sabot.

 

[skamaniac]

Would be interesting to see if you can get it to hang again with the BH209.

 

[Grouse]

Okay, around 9:00am Saturday morning i reloaded my Disc Elite and left it outside again. At 4:30pm i brought it in the furnace room for more then an hour and took it outside and fired it. There was no mis-fires or delays at all. The tighter mmp sabot with the FPJ is working really well now.

 

[rt_con]

Now I really confused with BH209 and cold weather.

I want to use BH209 in my Elite. I currently have the "domed" breach plug which works great with 777; but hang-fires with BH209.

I can switch back to the FPJ plug (and get more blowback), which will probably work.

Also I use the 250 Barnes MZ Expanders with the Harvestor Long Sabot, (the supplied sabot looks like the MMP HPH-12, which loads hard). May have to use the supplied sabot for a tighter fit.

Think the NFPJ conversion would give more reliable iginition with BH209 ?

Thanks... Rob

 

[Grouse]

Think the NFPJ conversion would give more reliable iginition with BH209 ?

It worked fine for me today with Federal 209A primers

 

[Grouse]

Today i was shooting my Disc Elite at the range. The red plastic jacket plug kept mis-firing. That really sucks. The non fpj plug worked fine last time. I dont think i'm going to use the red plastic jackets anymore.

 

[flint head]

That's really weird, I've shot close to 100 rounds out of three different Disc rifles with out so much as a sputter using the red Discs... hopefully this new bolt and plug will take care of the ignition and blow back issues.

 

[jsteurrys]

This is discouraging news. Were you still using the Federal 209A Primers? I have not shot mine since mid December. I should do some more testing before it warms up. Like that is going to happen any time soon.

 

[Grouse]

Were you still using the Federal 209A Primers?

100% yes