Can't remove foreend cap from my Beretta 391

[gunsrfun1]

Hello, hoping I can find a solution to my stupid mistake.
This morning, while getting ready to clean my Beretta 391, I accidentally tightened (turned it the wrong direction, don't know what I was thinking) the Briley end cap I have on it, to the point that now I cannot remove it. I have put vise grips on it and when I turn it counterclockwise, you can see the foreend wood bowing out in the direction I turn. That's how tight it is. So I don't want to crack the foreend by turning it any more.
I have put PB Blaster and Kroil on it, but no joy. I thought about heating it, but am not crazy about that, as I don't want to damage the barrel or the wood with the heat. If I did, what would I use, a small butane torch?
Any ideas on how to resolve this? I think this is my dumbest screwup ever with a gun, and I just want to get this cap off!
Thanks

 

[samuelcmm]

I had a stuck cap on a 870 one time the person I bought It from put lock tight on it
I put it in a vice with a small towel around the for end then a piece of thick leather over that I put it in the vice to keep stress off the wood. I heated it with a heat gun (the leather was covering all wood and the towel) and took it off with vice grips

if it comes to that there's a suggestion good luck

 

[gunsrfun1]

Thanks, may try that. I've heard "heat it" and "put it in the freezer" so I am not sure which is best. Guess I will try both.

 

[rcmodel]

Try impact.

If you can get the vice grips on it without terribly scaring it?

Whack them a fast blow with a small hammer.

Should pop it loose.

rc

 

[jmr40]

Use something between the vise grips and cap. An old leather belt for example.

 

[gunsrfun1]

Finally got it loose. Turns out the Briley forend cap is a two-piece unit, and you have to unscrew the outer part first. It was filthy and the spring rusted, plus it looks like s--t now that I beat it with the vice grips, so I will have to replace it. Not crazy about the design so going to see what other brands are out there. (It was an 8-ounce cap.)

Thanks to all for your suggestions. Won't make this mistake again!

 

[samuelcmm]

Congrats on getting it off is sucks to have a broke gun
Midwest guns have replacement caps had to buy one a few months ago


http://www.midwestgunworks.com/page/mgwi/ctgy/beretta-391-forend-cap

 

[gunsrfun1]

Thanks. I actually have the factory cap; the Briley was an 8-ounce cap. I'm going to see who else makes weighted forend caps for the 391. I was never that crazy about the Briley 2-piece design.