bore riders

[Oklahoma Rebel]

http://www.accuratemolds.com/img/bullets/detail/37-286C-D.png I am going to be getting this boolit when I get my rifle, my question is how much, if any do you want the bore riding section to engrave into the rifling? if the bore was .356 and the bore riding section was .357, would it be hard to chamber? thanks a lot guys!-Travis

[John Boy]

when I get my rifle, my question is how much,
Purpose of a bore riding bullet is to center the bullet nose to the axis of the bore.
With several bore rider bullets I cast, I chamber them so the leading bore cuts engrave the ogive slightly and a slight thumb pressure is needed to chamber the reload. In all honesty, I have never measured the distance - it is based on the feel chambering and capability to easily extract the loaded round. When you find the distance that your rifle likes - make a COAL dummy of the reload

[Rcmaveric]

It would depend on the dimensions of the chamber and how the riffling starts. A chamber cast would answer that. Worst it will affect is having to seat the bullets deep

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[Oklahoma Rebel]

I plan on doing the chamber cast, it is what I do with that info that I was asking about, so you are saying if the bore ended up at .3555 the bore riding portion should be about .356?or should it be .3555 and just skim the bore? and then i'll go .001 over bore or a bit more for groove. I know that some rifles do well with boolits sized .002 over groove, like my 45/70

[Oklahoma Rebel]

bump...

[waco]

I know that older military rifles that have lots of wear and tear (worn out throats) will require a larger nose.
Lets say a new .308 likes a nose of .301"
An old WWII '03 might need a nose of .304"
A pound cast will tell you what your rifle needs.
Hope this helped.

[Rcmaveric]

It really all depends with how the end of your chamber ends and how the lede transitions into your riffling. It wouldnt be hars chamber, but you would notice with seating depth. The bullet picture you posted. If i am reading it right has a bore riding section that is .356 which is that same as your bore. A light engraving of the bore riding section i doubt would hurt much.

[Oklahoma Rebel]

ok, thanks

[JonB_in_Glencoe]

The lightest scrape possible, to avoid set back.

I was happy with the witness marks, that my Mod 70 put on this Lee CTL312-160-2R
204696

[runfiverun]

the scuff marks work okay.
I have a couple that are probably close to .001 per land mark.
but if you have say a 300 bore a 301 nose would be just about right.
you can fiddle your alloy to make the nose fit tighter or slightly looser.
it's worth the trouble and I prefer a little harder alloy to make a tighter fit.
bore ride bullets rely on that long nose to do most of the work, the back half follows the nose and gets steered at the muzzle.
if it gets there crooked [shrug]

[Oklahoma Rebel]

that's why I added .06 to the forward groove riding band on that boolit, to give it a bit more grip. im sure with tom if I give him the correct info, and alloy it will work out ok, I just want to avoid having to nose size!

[MT Chambers]

On a lot of my boreriders, the front portion needs to be about .010 smaller than the base of the bullet. On a recent buy from NOE the bore riding portion is .301" and the back portion is .311".

[Oklahoma Rebel]

that makes sense, now that I think about it, I see a lot of bore riding boolits, what would a non bore riding boolit of the same weight look like? would it be like the lyman 35-200? if so, to get a 286gr boolit in a 9.3 it would have to be considerably longer, not sure if it would even work with the somewhat short neck of the 9.3X62

[runfiverun]

you'll still have a bore riding section.
but this would be a non bore ride bullet

204756


while this is a bore rider.
204757

[reed1911]

It depends too on your alloy hardness. My 200g .30 cal requires either softer alloy or nose sizing depending on which rifle I shoot it in. This was done on purpose (Believe it or not) since it would be used for several different calibers and rifles. With some alloys a .001 is just too hard to seat without set-back into the case. Not a problem, Just nose size and go. With the softer alloy it does just fine.

[Oklahoma Rebel]

I am using 3.5%sb-3.5%sn.03-.04cu

[Oklahoma Rebel]

just a bit less hard than #2 but a little tougher. I cast 2 boolits last night, and tonight I will re-measure, and again tomorrow night, to see if it shrinks, grows, or stays the same. mmost alloys shrink a little, but I have heard copper makes them grow a bit, not sure how much copper they were using. maybe popper will see this and reply

[Oklahoma Rebel]

do the noe nose sizing bushings fit in a lyman 450?

[runfiverun]

yes. you need the in and out.
check the NOE site.

[reed1911]

No, the NOE size die fit into a holder (From NOE) that thread into your reloading press. You can get the adapter for the Star sizer, but it is just for sizing only unless you modify it for the lube. I did that to mine so I could lube my .17 cal cast bullets in my Star. But they do not make an adapter for the 450.

[Oklahoma Rebel]

I don't understand what you mean by the in and out thing.? I do have a star sizer, would that be the easiest way? if so I would need the bushing, star adapter, and what else?

[Oklahoma Rebel]

the nose sizers do look similar to the top part of a lyman sizing die, and if you pushed it in I bet you could pull it out by hand. I don't see how it could go in and out of anything since there is a larger diameter to deal with as well

[Bama]

http://www.accuratemolds.com/img/bullets/detail/37-286C-D.png I am going to be getting this boolit when I get my rifle, my question is how much, if any do you want the bore riding section to engrave into the rifling? if the bore was .356 and the bore riding section was .357, would it be hard to chamber? thanks a lot guys!-Travis

I size the bore rider portion to just fit the bore (Probably not correct way but I check end of barrel--Want it to just slide in but with almost no wiggle. This just gets the initial alignment. I have found when load is worked up accuracy really starts at the point of full rifling engagement. As you go up in powder charge the bullet is deformed or obstruates (sp) to completely fill bore. Groups usually substantially reduce in size at this point. In my 308W size reduced 50%. Good luck and take good notes. Share your findings

[popper]

I'm finding results like Bama even though I don't use bore-riders. The RD 30/30 jammed to the lands shot ok, any jump to the lands reduced accuracy. I use a washer to slightly nose size a similar boolit so it slightly engages the bore (only ~ 0.100" into the lands but not 'jammed'). 50% reduction in group size. Properly aligns the nose in the bore.

[mike69]

With the noe nose dies you need there push through size die body. When nose sizing with it you push just the nose up in to where it needs sized then there a piece that holds a nose punch to push it back down out of the die. Every thing comes with the kit you just need whatever size die to go with it

[Oklahoma Rebel]

and it goes into the press, not the sizer, right?

[mike69]

Yes it mounts in your press