LVLAaron
Gold $$ Contributor
All the more reason a smooth vs a jagged edge on the bullet would make a difference. All of this stuff shows up at 1000 yards.
Tailstock Misalignment?
- Thread starter Henryrifle
- Start date
All the more reason a smooth vs a jagged edge on the bullet would make a difference. All of this stuff shows up at 1000 yards.
Certainly would be interesting as even at supersonic speeds it appears features on bullets have visible effects.
The theory behind Shilens ratchet rifling was that only the one edge would engage the bullet and thusly increase the BC, etc. Theory was sound I guess but in actuality it never caught on with the long range shooters. Smallbore shooters on the other hand seem to really like it. 5R which is remotely similar seems to be the "thing" for long range these days.
5r is working well with the 338 solids I shoot for ELR.
Is it better than a standard 4 or 6 groove?
I’d be interested in any testing but I suspect the difference is so small it may fall into the noise of other variables.
I don't think that anyone can confirm that one is better than the other. All seem to work well if the barrel is a quality barrel.
That’s my feelings as well.
Someone has probably already pointed it out, but tailstock misalignment doesn't produce a misaligned throat; only an eccentric setup of the barrel does that. Tailstock misalignment will cause the reamer to cut oversize. WH
ridgeway
Silver $$ Contributor
Just depends on how the reamer is being held. Rigid, yes. Floating, naa. My TS sits a tick high. I use a JGS floater, my chambers have never cut oversized.
All tailstocks should sit a bit high when the machine is cold. As the headstock warms up, alignment follows. I generally let my lathe run for a few minutes before I start reaming. Most floating holders I have seen still cut to center under load, but will tolerate minor misalignment. Still, offset the rear of the reamer, and you will cut above reamer size. You will not cut an eccentric throat. WH
butchlambert
Site $$ Sponsor
When reaming my chamber I care not about tailstock alignment. I use a pusher.
LVLAaron
Gold $$ Contributor
I need to try this... I'm curious what all the hubbub is about.
WSnyder
Silver $$ Contributor
WSnyder
Silver $$ Contributor
Yup, I put it in an Albrecht chuck.
I use a pusher as well, but only for the last quarter inch or so. Up 'til then, I support the reamer with the center, which I dial in before each job (or, at least, check it). If one pre-bores, on a taper, to allow the reamer to be well into the chamber, I reckon the center wouldn't be needed. I usually just bore straight and 10 thou under shoulder diameter. This gives me a straight start and I switch to the pusher once the reamer is well supported. I use the center for a throater, since the throater needs support at the rear. WH
DaveTooley
Gold $$ Contributor
I've used nothing but a pusher for 30+ years.
DaveTooley
Gold $$ Contributor
That one is a MT adapter. On my manual machines I used a drill chuck arbor. Put a drill bit in the chuck and fed the arbor in.
Upgrades & Donations
This Forum's expenses are primarily paid by member contributions. You can upgrade your Forum membership in seconds. Gold and Silver members get unlimited FREE classifieds for one year. Gold members can upload custom avatars.
Click Upgrade Membership Button ABOVE to get Gold or Silver Status.
You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.
To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.
Click Upgrade Membership Button ABOVE to get Gold or Silver Status.
You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.
To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.