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#199666 - 05/16/19 01:37 PM Re: forcing cone erosion [Re: freedom475]
Brenden
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 Originally Posted By: freedom475
I have totally roasted my forcing cones and the face of the cylinder in my FA's and they still shoot little tiny groups at a 100 yards...So don't overthink this as a "problem that you need to throw a bunch or money at "unless" the gun won't shoot.
My 454 was pretty bad. And now I have around 9,000 rounds through my 475L and it looks like the forcing cone was cleaned with a triangle file.


THIS!!!!

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#199680 - 05/16/19 10:23 PM Re: forcing cone erosion [Re: Brenden]
45MAN
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Registered: 08/13/17
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I CHECKED THE FORCING CONE ON A FA 454 TODAY THAT ONCE BELONGED TO TRADMARK. THIS REVOLVER HAS CLOSE TO A 100 KILLS AND, KNOWING TRADMARK, A LOT OF ROUNDS THRU IT. PROBABLY THE ONLY THING TRADMARK DID NOT SEND DOWN THE BARREL OF THAT GUN IS A STICK OF DYNAMITE. CHEROKEETRACKER HAS THE GUN NOW, THE FORCING CONE LOOKS GREAT, AND THE GUN IS STILL VERY ACCURATE.
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#199685 - 05/17/19 01:54 PM Re: forcing cone erosion [Re: 45MAN]
Sawfish
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Back when this subject (forcing cone erosion)was a hot topic in the Ruger .357 Maximum revolvers, some of the suggested causes were the cartridge itself, lightweight bullets at high velocity, Lil Gun powder, and barrel cylinder gap. Now, some 20 plus years later, the prime culprits are Lil Gun and the 260 gr. XTP bullet. Although FA is known for its tight tolerances, it would be interesting to know the BC gap on the affected revolvers.
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#199686 - 05/17/19 03:13 PM Re: forcing cone erosion [Re: Sawfish]
98Redline
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I have head and read the reports regarding forcing cone erosion an LilGun. That I can understand.

What I can't quite wrap my head around is what is the issue with the 260gr XTP? Why would say the XTP be problematic but the XTP mag would not be?

Regarding the hardness, I was under the impression the difference between the XTP and the mag version was in jacket thickness and the skiving on the nose to make the mag version require a higher velocity to begin to open. I wouldn't think that would cause any changes in what occurs before the bullet leaves the barrel.

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#199693 - 05/17/19 08:10 PM Re: forcing cone erosion [Re: 98Redline]
45MAN
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WE HAVE BEEN DISCUSSING A 240gr XTP MAG, NOT 260 (I DO NOT THINK THERE IS SUCH A BULLET). DID NOT KNOW THE DIFFERENCE BETWEEN A XTP AND A XTP MAG. IF THEY BOTH HAVE THE SAME LEAD CORE MATERIAL THEN A 240 XTP MAG AT HV MAY BE HARMFUL TO BARRELS. I HAVE NEVER BEEN TEMPTED TO DRINK THE 240 XTP MAG KOOLAID.


Edited by 45MAN (05/17/19 08:12 PM)
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#199700 - 05/18/19 08:14 AM Re: forcing cone erosion [Re: 45MAN]
98Redline
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You are correct, 240gr. I fat fingered the bullet weight in my post.

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#199710 - 05/18/19 11:27 PM Re: forcing cone erosion [Re: 98Redline]
Chance Weldon Administrator
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Not to hijack this thread, but would the same problematic conditions that erode the forcing code (certain bullets, powders, etc,) in revolvers cause accelerated throat erosion in a single shot?
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#199723 - 05/19/19 03:51 PM Re: forcing cone erosion [Re: Chance Weldon]
45MAN
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 Originally Posted By: Chance Weldon
Not to hijack this thread, but would the same problematic conditions that erode the forcing code (certain bullets, powders, etc,) in revolvers cause accelerated throat erosion in a single shot?


NOT SURE ABOUT LIL'GUN, BUT PRETTY SURE THAT THE REASONS SOME BULLETS HAVE PROBLEMS IN REVOLVERS ARE NOT FACTORS IN SINGLE SHOTS.
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"ADAPT OR DIE". I USE ALL CAPS, NOT BECAUSE I AM YELLING, BUT BECAUSE IT IS AN OLD HABIT FROM MY ARMY DAYS, PLUS IT IS EASIER TO TYPE AND READ.

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#199729 - 05/20/19 04:36 PM Re: forcing cone erosion [Re: 45MAN]
Sawfish
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Registered: 02/10/04
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 Originally Posted By: 45MAN
 Originally Posted By: Chance Weldon
Not to hijack this thread, but would the same problematic conditions that erode the forcing code (certain bullets, powders, etc,) in revolvers cause accelerated throat erosion in a single shot?


NOT SURE ABOUT LIL'GUN, BUT PRETTY SURE THAT THE REASONS SOME BULLETS HAVE PROBLEMS IN REVOLVERS ARE NOT FACTORS IN SINGLE SHOTS.


That was what prompted my question about forcing come erosion above. I have a 10.5" RPM in .357 Max in which I use nothing but Lil Gun, and have not experienced any throat erosion. I also use bullets that are heavier than 180 grain. For whatever that is worth.
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