bigshot doesn’t fit....need help

maroon out wrote: If your serial # is 495,000 or below, you have the old threads. If it's 495,001 or above you have the new threads.

Thanks. Looks like I have the new threads :)

Well, I played with it 90% screwed in friday night, and for the most part it worked alright.  During the whole night, I don't recall any breaks, but I did have about 8 times where the ball failed to feed and all I shot was air (out of perhaps 600 rounds).  I don't see how that would have been the fault of the barrel failing to be screwed in all the way.  I also had one instance of the bolt being jammed back, and I had to fiddle with it for a few secs on the field to get it to shoot again.  Again, don't see how that would have been barrel related, but still.

I did end up shooting a few out in my yard last night before going to bed (with the barrel threaded entirely in and flush with the receiver internals), and it worked fine.  Ugh, just dreading taking it apart again...

So does anyone know if what mbmcewen did is alright?  I ask because I just discovered the same problem.  The serial number on my 98c is around 729000, and I just picked up a Bigshot.  I went to screw it on before playing last night, and it wouldn't go on more than 2/3 of the way.  I ended up loosening the bolts on the front of the receiver, which allowed me to screw it in right up to where the O ring was *just* in front of the barrel port on the receiver.  I played with it that way, and didn't really encounter much trouble.

This evening, when I finally got around to cleaning the marker, I decided to investigate.  I removed the Bigshot and compared the threads, and they looked nearly identical to me.  However, one thing that I did notice once the receiver was apart was that apparently I only had the barrel screwed in about 90% of the way, assuming the opening of the barrel was supposed to be flush with the inner most edge of the receiver threads.  Apparently there was a bit of a gap internally while I was playing with it last night.

I was able to place the barrel in the correct position (at least I believe it is the correct position) with the barrel opening totally flush inside the gun.  However, it was a REAL pain to get the receiver halves back together.  I finally did it, and it the fit is really tight, but it's on.  This way, the barrel O ring is actually just barely on the inside of the receiver (which is how it should be, correct, to form a tight seal?).

I want to take it out in the back yard and test fire a dozen or so balls, but I'm afraid to do it because I don't want to have to disassemble it again to clean it after going through all that to put it back together. :(