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View Full Version : Shultz & Larson rechamber advise needed



sicero
01-09-2008, 08:57 AM
My Shultz & Larson target rifle [club rifle] shoots about .750 @ 50yd, but not consistent. I am considering cutting the tennon off and rechambering the factory barrel. It was chambered with a reamer at least similar to LR Sporting. The fired cases measure .231 at the base and .227 at the mouth. The cut is in the bolt for the rim. The cut diameter is .082 and the depth is
.045 and the bolt has .003 clearance. If I am thinking right this gives me .048 headspace. Is this correct? I was thinking of using a Calfee #1 or #2 reamer since they have no rim cut on the reamer. I am thinking with this reamer I could go back in and go deeper later if loaded rounds would not eject. I am not thinking BR accuracy with this action but I would like 1/2" or better. What do you think? Kenny

KEN HARPER
01-09-2008, 02:24 PM
If you're doing this yourself, go for it but I would probably set the headspace to .043. If you're having to pay for this work, I would consider putting out a little more money and get premium .22 blank instead. Just my 2 cents.

Geaux Tigers!!!

sicero
01-09-2008, 09:49 PM
Ken, I would have to buy the reamer but I would do the work myself. I would buy a new barrel if the rechamber didn't help some. I know what I should do and that would be buy one of the rifles in the BR classified rather than mess with this junk. Kenny

Go Bucks forgot to go eh.

Kathy
01-10-2008, 02:43 AM
Friend sicero:

Ken gave you some sound advice.........if your rifle only does .750" at 50 yards now, a re-chamber probably ain't going to do much.........as a matter of fact, it may make things worse..........

I am responding to you as you mentioned you may use a Calfee reamer....

Before purchasing a Calfee reamer the groove diameter of your barrel must be carefully measured.......then, based off of the diameter of your grooves, you select the proper diameter Calfee reamer.......

For instance, if you have a groove diameter or .2225" or better, which is highly likely with your rifle, the #1 or #2 Calfee reamer would not work....the reason being their diameters, .2250" and .2255" would be so small that after a very few rounds the combustion/lead ring that develops in the chamber would start sizing your bullets smaller than the groove diameter of your barrel, and accuracy would greatly suffer.......

This may sound kinda complicated, but producing killer accuracy IS kinda complicated.....

To compound the matter, if the groove diameter of your barrel is .2225" or larger, you would need the #3 Calfee reamer, .2260" diameter, but, when the groove diameters get this big, even with the best barrels available, finding bullets that will work good becomes a major problem...........

And, if you have any chamber runout, which is very easy to do, with a groove diameter that big.........it'll never shoot good...

A Calfee pattern reamer should never be used until the groove diameter of the barrel is carefully measured, then the correct diameter Calfee reamer is selected......

If I were going to cut a chamber in a barrel without measuring the groove diameter I'd select something like Clymer's standard match chamber, or something similar from the other reamer grinders.

Good luck whatever you decide to do.....

Your friend, Bill Calfee

Your friend, Bill Calfee

sicero
01-10-2008, 08:14 AM
Bill, Thanks for saving me from myself. Selling the junk I have and buying one of the rifles from Larry Cook sounds more like a good plan rather than putting $400 plus in a $200 rifle. Kenny Pond