Where's the forcing cone?

Andy Griffith · April 14, 2012, 10:56 PM

While going over my Spillers, I noticed that neither really has a forcing cone at all. I think they used a chamfering tool on it as the forcing cone. I've read that older guns had this problem, but these are only a couple of years old.
It's not anything I can't quickly remedy...but they should do better than this.

Just a note.

arcticap · April 14, 2012, 11:29 PM

It could be that's an authentic design and/or intended.
Many owners have said that the S&B revolver produces a much louder crack when it's fired compared to the sound of other .36 revolvers.
That's probably how the S&B develops a little more pressure and velocity.
Are you disappointed with its performance?

mykeal · April 15, 2012, 05:43 AM

...but mine is a Palmetto so I wouldn't really expect attention to detail.

I also realized I haven't yet measured the chambers and bore, nor have I gotten around to benching it for accuracy, so maybe it doesn't matter.

I need to get to work on my punch list.

zullo74 · April 15, 2012, 07:27 AM

A chamfered opening IS a forcing cone!

Andy Griffith · April 15, 2012, 08:25 AM

It seems that it spits a bit more from the gap than it should, and a little leading. I'm going to cut a real forcing cone in it and see if it improves accuracy, which is borderline acceptable at this point- why I haven't enjoyed shooting it as much.

A light chamfering is not acceptable as a forcing cone.
I will cut it lightly and report back the results...likely sometime later this week.

mykeal · April 15, 2012, 07:54 PM

Quote:

A chamfered opening IS a forcing cone!

In the sense that a chamfered opening shovels the projectile into the bore, then yes, any chamfered opening is a forcing cone.

However, if one considers a forcing cone as a device that performs the function of shaping and sizing the projectile correctly for the bore's geometry, then not all chamfered openings are true forcing cones.

And then you have to consider the term 'throat' and how that relates, or not, to 'chamfered opening' and 'forcing cone'.

At this point, my head hurts and I'm going to bed.

April 14, 2012, 10:56 PM	#1
Andy Griffith Senior Member Join Date: May 14, 2009 Location: Macon Co. NC Posts: 591	Where's the forcing cone? While going over my Spillers, I noticed that neither really has a forcing cone at all. I think they used a chamfering tool on it as the forcing cone. I've read that older guns had this problem, but these are only a couple of years old. It's not anything I can't quickly remedy...but they should do better than this. Just a note. __________________ Barney Fife: "Nip it, nip it, nip it!" Andy Griffith:"Oh now Barn'...."

April 14, 2012, 11:29 PM	#2
arcticap Senior Member Join Date: March 15, 2005 Location: Central Connecticut Posts: 3,166	It could be that's an authentic design and/or intended. Many owners have said that the S&B revolver produces a much louder crack when it's fired compared to the sound of other .36 revolvers. That's probably how the S&B develops a little more pressure and velocity. Are you disappointed with its performance? Last edited by arcticap; April 15, 2012 at 01:12 AM.

April 15, 2012, 05:43 AM	#3
mykeal Senior Member Join Date: October 8, 2006 Location: Northern Michigan Posts: 2,772	Interesting. I never noticed that... ...but mine is a Palmetto so I wouldn't really expect attention to detail. I also realized I haven't yet measured the chambers and bore, nor have I gotten around to benching it for accuracy, so maybe it doesn't matter. I need to get to work on my punch list.

April 15, 2012, 08:25 AM	#5
Andy Griffith Senior Member Join Date: May 14, 2009 Location: Macon Co. NC Posts: 591	It seems that it spits a bit more from the gap than it should, and a little leading. I'm going to cut a real forcing cone in it and see if it improves accuracy, which is borderline acceptable at this point- why I haven't enjoyed shooting it as much. A light chamfering is not acceptable as a forcing cone. I will cut it lightly and report back the results...likely sometime later this week. __________________ Barney Fife: "Nip it, nip it, nip it!" Andy Griffith:"Oh now Barn'...."

April 15, 2012, 07:27 AM	#4
zullo74 Junior member Join Date: August 8, 2009 Posts: 374	A chamfered opening IS a forcing cone!