Lately I have been checking several of my revolvers with my range rods.I have found most are aligned very well but I have one that I have a question about.On two cylinders the rod will pass from the bore into the cylinder but the rod is dragging on one side of the cylinder throat;should I be concerned about this?

I wouldn't, one reason for the Forcing Cone is to make the effect of a small error in alignment negligible. Yeah, in theory there may be a minor degradation in accuracy but 99.9% of us will never shoot well enough to actually observe that loss in accuracy.

I urge you to read Kuhnhausens book. He covers this alot and it you have misalignment to the point of a rub with resistance, it can cause increased pressures and then effect accuracy. I would always error on the side of safety. I am so paranoid about this that I won't even accept range rod ticks. I would suggest talking with a competent Smith & Wesson gunsmith and have him check your revolver before shooting it.

I did finally read Kuhnhausen and as you stated he did not approve of the rod rubbing on cylinder throat entry.I think I will take a closer look at the extractor as I think the hand is pushing the cylinder too far and holding a lot of pressure on the extractor as the revolver is fired.

If it is only doing it with one cylinder hole, it's not the hand.

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So many S&W's, so few funds!!

Yeah, I would look at possibly several long/wide ratchets.

As a followup you can tell if it is long/wide ratchets if you check each cylinder at rest, the trigger is not held to the rear. If the range rod dosen't touch in this configuration and then when you hold the trigger down it touches, it is probably long/wide ratchets. Also are you using empty spent cartridges (I repeat empty spent cartridges, I check them three or four times for safety) chambered when you do your range rod check. A little varience in the ratchet allignment pins without the empty chambered rounds can cause range rod ticks. I talked with Ron Powers and he always uses empties when conducting range rod checks.

Thanks! I will check the ratchets again,I still think that is where the problem is.Two cylinders are showing this.Yes I use empty spent cases in each cylinder.

I did find two ratchets that were too wide,getting closer to repairing,I like to go slow at this point!

Yes sir, slower the better. Remember you can take it off but you can't put it back on! From experience, I can tell you that it is vital that you keep your barrette file square and parallel to the ratchet face and re-check hand drag and carry-up on every pass made. You want the hand to not drag but keep the cylinder tight and have proper barrel cylinder allignment. I throw a weak trigger return spring in during just this process and that makes it easier to tell if the hand is still binding against the ratchet face. It sounds like you know what your doing, so excuse me if I am preaching to choir.

I appreciate the help!!!