287 168Gr SP (RCBS)
A great one for the 7mmTCU
Any interest in it?
Thanks Junior1942 for the samples
We could run this one as soon as we can get 15 orders and the tooling
Tooling is taking about a week so get 15 interested and will go
New shop is working great and coming together very well!
Thank you to all our past customers
And welcome to all our new ones
Bullet maker, maker
Swede Nelson
The expectation of evil is more bitter than the suffering -OR-
More people die from worrying about getting ate by a bear then get ate by a bear.
If you made the top band like you did on your "7mm Hunter" I would be interested..
You could call it the NOE 287 168Gr SP Improved..
Seriously I don't understand why the top bands on nose/bore riders aren't tapered.
I need a 155-160 288 GC for 7mmMag.
Tom
+1 for a tapered forward band like on your hunter.
Tapered like this ?
IHMSA # 566 "time sure flies when you're having FUN"
Something like this?
Bullet maker, maker
Swede Nelson
The expectation of evil is more bitter than the suffering -OR-
More people die from worrying about getting ate by a bear then get ate by a bear.
Yup, like that! Put me down for a 4 cavity gas check.
What does the taper do?
Why try to fix what isn't broken? The bullet works great in a 7mmTCU as-is.
Junior1942
I can't agree more!
Could be fun to do both and run a side by side test on them
Run in to the same thing with scraper grooves
Some like-em some don't
Bullet maker, maker
Swede Nelson
The expectation of evil is more bitter than the suffering -OR-
More people die from worrying about getting ate by a bear then get ate by a bear.
The idea is to fill the throat (freebore and leade) with the bullet..Originally Posted by kbstenberg
ie. design a bullet that has the most contact with the throat as possible so the bullet doesn't slump unevenly during the ignition phase..
If you are shooting low vel. and lower pressure say under 1800 fps then you will have less slump if any depending on your alloy..
Here is the thread on the design of the 7mm Hunter GB..
Take a look at Tom Meyers posts in particular his drawings..
http://castboolits.gunloads.com/show...7mm-Bore-rider
Unfortunately there are no drawings of the TCU chamber/throat area on that thread to allay Jr's fears..
Having said that I am quite familiar with contender's chamber's and throats from my day's shooting handgun silhouettes..
They were usually very long and sometimes not centered with the bore..
Here is a Tom Myers drawing showing a non-tapered top or nose band and the open space between the bullet and leade..
The area I am talking about is right behind the C.O.A.L. 2.824" in Tom's drawing..
Click image for larger size..
Last edited by Nrut; 05-04-2014 at 03:41 PM.
Jr. you have a 7mm Hunter..
Is it's body bearing surface long enough to fill your TCU's throat and still be in the neck of your case?
If it is, how does it shoot compared to your RCBS 168 gr. bullet?
It appear's to me that you are the one who is responsible for getting Swede to open this group buy since you sent him the samples to use for the drawing..
I suggested a tapered top or nose band so the bullet would be better supported in the leade part of the throat..
Preferably the taper should be cut at the same angle as the leade or to accommodate the leades in most 7 mm's.
(excluding the 7X57 as they have throats all over the place)
I see a tapered top band as leading to an improvement in accuracy esp. at higher velocities..
I see no downside what so ever..
Do you?
Having said that I respect yours and Swede's desire to stay with the original design and will no longer debate the issue as I have mixed emotions about buying such a long bore ride design anyway..
No hard feelings from me what so ever as it is spring here after a particularly hard winter..
I shouldn't be on this frigging interweb to begin with on this nice sunny day..
Cheers!
Last edited by Nrut; 05-04-2014 at 02:22 PM.
They were usually very long and sometimes not centered with the bore.. No truer words were ever spoken.
If a bullet does not allow for a snug fit in the chambers throat to guide it into the rifling you might as well be casting fishing sinkers.
Al, is offering either design with one less driving band possible ? IE; cut the cherry so that the first lube groove is as long as the GC shank, then you can make the original design or a shorter version ??
IHMSA # 566 "time sure flies when you're having FUN"
My RCBS 168-SP shoots better in my 10" 7mmTCU barrels than does the 150 gr Hunter. "Better" means a smaller group. I might have the targets and I might NOT have the old targets. I don't have enough 168-SPs cast for extensive testing, becaue the mold is (1) a two cavity; (2) iron which I don't like. I do remember that Forster tool HPed RCBS 168 grs with off center holes shot better than the Hunter. My 168 gr RCBS bullets with their noses swaged to .277" is one of the all-time better shooting cast or non-cast bullets in my 10" Contender 7mmTCU. And the noses deform in my swaging die, a .277" Lyman H-die. Rather, they deform getting them out of the Lyman die. A .277" nose is a snug, push-in fit on top of the lands. That's why I asked Swede to make the nose .277". As I said, the RCBS 168-SP works. For me, a dream come true is a 168-SP aluminum 4-holer.
You don't need a tapered top band when the nose is a perfect, snug fit on top of the lands. The bullet when shot is perfectly parallel to the bore.
PS: The 168 has (1) a semi-pointed nose vs a FP on the Hunter, and (2) more weight than the Hunter. Therefore, the 168 has a larger B.C. Therefore, again, it is flatter shooting than the Hunter and has more long range energy.
Last edited by Junior1942; 05-04-2014 at 06:19 PM.
Not intending to enter the debate, I would prefer the tapered "Hunter" style front band.
I would be in for a two or maybe a four cavity.
JB
"He's whittlin' on a piece of wood. I've got a feeling when he stops whittlin', somethin's gonna happen." - Cheyenne, Once Upon a Time in the West (1968)
"When you have to shoot, shoot. Don't talk." - Tuco, The Good, the Bad and the Ugly (1966)
I would like to run both just so we can do a side by side test on them.
So will run our first battle of the bullets group buy!
I will commit to running both designs if we can get 10 orders of each one.
What do you say - should I get the ball rolling!
Bullet maker, maker
Swede Nelson
The expectation of evil is more bitter than the suffering -OR-
More people die from worrying about getting ate by a bear then get ate by a bear.
Put me down for a 5-cavity original design.
Put me down for a 4 cavity Hunter style.
Are we going to set up some boolit trades so the rifle variable can be controlled in the experiment?
"He's whittlin' on a piece of wood. I've got a feeling when he stops whittlin', somethin's gonna happen." - Cheyenne, Once Upon a Time in the West (1968)
"When you have to shoot, shoot. Don't talk." - Tuco, The Good, the Bad and the Ugly (1966)
I would also like to have one 5-cavity original design, thanks!
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