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Old 06-01-2009, 07:51 PM   #1
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Default A Very Limited Mustang/Blackhorn Report

A TALE OF WOE

Some of you guys know I've been waiting to get the Lyman Mustang back in action to take another shot at tryingBlackhorn 209in it.

Previous attempts with .25 ACP small riflemagnum primersresulted in bad hang fires.I ordered a new 209 breech plug to try 209M primers, but the firing pin broke before the breech plug arrived. After waiting over three months to get the "repaired" receiver back from Lyman I was ready to Get Er Done last Saturday - or so I thought.

I loaded up a bunch of powder tubes with 70 grains weight of BH (which filled my TC U-View powder measure to about the 107 grain mark) and headed to the range. After putting a target out at 100 yards I dumped a tube of BH downthe cold clean bore and pushed a300 grain Gold Dot in aHarvester 5045B sabot down very firmly on the charge. The temperature was hovering around 90 degrees when I touched off the CCI 209M primer and the gun went BANG instantly. That's a good start.

Because I just can't help myself, I swabbed the bore with both sides of one alcohol patch and loaded up again. When I took the shot - "CLICK - NOTHING". Opened the breech and there was a very very light dimple on the primer. Closed the breech and tried the shot again - BOOM, everything's fine.The next shot - CLICK/NOTHING. Another light dimple on the primer. Tried again - CLICK/NOTHING. Switched over to a new primer, still no boom. Backed the breech plug out about 3/4 turn and got it to go off. All the while I'm thinking"*#!##%** LYMAN REPAIR SERVICE".

Well, any time the dang gun ignited the primer it lit off the BH with no problem and no hang fire. I managed to get five shots into the target. Here it is.





That's about the kind of group I get with this gun/bullet with 105 grains volume T7 FFG (U-View measure) or 120 grains volume GOEX FFFg. So maybe with a little load tweaking I can get BH to outshoot the other powders. Maybe not.


I was pretty frustrated with the gun problems but determined to shoot one target with no swabbing between shots. I did manage to do that. Here's the target.





I did not expect that! I must confess that the gun wasHOT at this point. I could not hold it by the barrel. It seems to me that BH creates more heat than the other subs.

This shoot was too limited to draw any conclusions other than CCI 209M primers will ignite BH in the Mustang in 90 degree weather, andLYMAN REPAIR SERVICE STINKS. But I suspect that when I use up this first canister of BH I won't be buying any more. If you don't mind swabbing I just don't see the advantage.
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Old 06-01-2009, 08:08 PM   #2
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Default RE: A Very Limited Mustang/Blackhorn Report

Well heat can sure play havoc on your groups. I know that. Next time take three rifle to the range and change them out. I know one person that shoots at the public range that even wraps his barrel with a wet ice cold towel. When he first came to the range with a cooler we were a little worried until he pulled the towel out. It did seem that he shot real well.

Was your mustang always made for shooting the 209 primers. Maybe you shoudl try some other primers.
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Old 06-01-2009, 08:19 PM   #3
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Default RE: A Very Limited Mustang/Blackhorn Report

im betting that if you get the click issue fixed, your group will improve greatly. I know when something doesnt go right and im pissed off, i cant shoot to save my own life.

When are you going to order an Accura?
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Old 06-01-2009, 08:19 PM   #4
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Default RE: A Very Limited Mustang/Blackhorn Report

Yeah, I know a hot barrel can screw up groups and I assume that's what happned on that second target. I was shooting pretty fast without swabbing. I suspect the alcohol patch routine helped to cool the barrel a little on the first target.

The Mustang is designed for 209 primers. I had two breech plugs that I converted to .25 ACP. But before that they shot CCI 209s fine. I'm wondering if the new breech plug is short/out of spec. Tomorrow I'll put one of the 25 ACP plugs back in and see if the "repaired" receiver will pop the ACP primers.
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Old 06-02-2009, 02:39 AM   #5
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Default RE: A Very Limited Mustang/Blackhorn Report

Did you clean out the firing pin? A shaving or bit of crud inside the firing pin pocket is all it takes to act like that.If thats not it you may need to shim the hammer spring. Lee
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Old 06-02-2009, 07:09 AM   #6
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Default RE: A Very Limited Mustang/Blackhorn Report

Semi, you need an Accry!!
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Old 11-05-2012, 07:55 PM   #7
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Default firing pin spring

e;3356971]A TALE OF WOE

Some of you guys know I've been waiting to get the Lyman Mustang back in action to take another shot at tryingBlackhorn 209in it.

Previous attempts with .25 ACP small riflemagnum primersresulted in bad hang fires.I ordered a new 209 breech plug to try 209M primers, but the firing pin broke before the breech plug arrived. After waiting over three months to get the "repaired" receiver back from Lyman I was ready to Get Er Done last Saturday - or so I thought.

I loaded up a bunch of powder tubes with 70 grains weight of BH (which filled my TC U-View powder measure to about the 107 grain mark) and headed to the range. After putting a target out at 100 yards I dumped a tube of BH downthe cold clean bore and pushed a300 grain Gold Dot in aHarvester 5045B sabot down very firmly on the charge. The temperature was hovering around 90 degrees when I touched off the CCI 209M primer and the gun went BANG instantly. That's a good start.

Because I just can't help myself, I swabbed the bore with both sides of one alcohol patch and loaded up again. When I took the shot - "CLICK - NOTHING". Opened the breech and there was a very very light dimple on the primer. Closed the breech and tried the shot again - BOOM, everything's fine.The next shot - CLICK/NOTHING. Another light dimple on the primer. Tried again - CLICK/NOTHING. Switched over to a new primer, still no boom. Backed the breech plug out about 3/4 turn and got it to go off. All the while I'm thinking"*#!##%** LYMAN REPAIR SERVICE".

Well, any time the dang gun ignited the primer it lit off the BH with no problem and no hang fire. I managed to get five shots into the target. Here it is.





That's about the kind of group I get with this gun/bullet with 105 grains volume T7 FFG (U-View measure) or 120 grains volume GOEX FFFg. So maybe with a little load tweaking I can get BH to outshoot the other powders. Maybe not.


I was pretty frustrated with the gun problems but determined to shoot one target with no swabbing between shots. I did manage to do that. Here's the target.






I did not expect that! I must confess that the gun wasHOT at this point. I could not hold it by the barrel. It seems to me that BH creates more heat than the other subs.

This shoot was too limited to draw any conclusions other than CCI 209M primers will ignite BH in the Mustang in 90 degree weather, andLYMAN REPAIR SERVICE STINKS. But I suspect that when I use up this first canister of BH I won't be buying any more. If you don't mind swabbing I just don't see the advantage.[/quote]


Had the same problem with my mustang , very frustrating ! So I removed the rear stock , unscewed the grub screw to the right of the hammer pull the breach releace lever out just far enough that the firing pin comes out and cut off 3 loops of the firing pin spring . Problem solved ! Spring tension is to high
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Old 11-05-2012, 08:05 PM   #8
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Hay semisane quick solution cut 3 loops off your firing pin spring , problem solved
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Old 11-05-2012, 08:07 PM   #9
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its easily fixed by selling it and buying an Optima
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Old 11-05-2012, 08:14 PM   #10
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Quote:
Had the same problem with my mustang , very frustrating ! So I removed the rear stock , unscewed the grub screw to the right of the hammer pull the breach releace lever out just far enough that the firing pin comes out and cut off 3 loops of the firing pin spring . Problem solved ! Spring tension is to high
I'm confused Zimbabwean. Are you saying a strong firing pin is causing light strikes on the primer? That seems counterintuitive.
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