Anyone for a 311-170-FN or 311-150-FN in 5 cavity, (PB/GC bore rider)

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I have a new Ruger American Compact 308 on the way and was thinking about getting this custom made.  Since NOE makes my favorite molds I thought I post and see if there’s anyone else interested.

I also haven’t done (designed) many rifle bullets, but have custom ordered a couple of dozen handguns bullets, so I’m bit new at rifle bullet design.  Once the Ruger is here this may need to tweak around.

Thinking of a big base, something that would allow a wide range of alloys, powders and pressures to work, in the 1,200 to 1,600 FPS range.  That may be wishful thinking, but I figure if 1,600 shoots in my 357 Henry, plain and base and no leading, the 308 should be able to do that too.  It would be a plinker, target to 200 yards and small game bullet.

Below is the design so far, it’s inspired by a couple of RCBS bullets (love the TMT design software):

Good idea, bad idea? 

Topic

[SwedeNelsonKeymaster]

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357shooter

Welcome to our forum
Great Idea – lets get it worked out and run them!

That what we do!
Bullet maker, maker
Al Nelson

[petergallo]

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Thanks Al.  Thanks for putting this site and forum up, it’s great idea and I hope it proves to be a great business move too.  NOE has been making all the right moves over the past several years.

Anyone else have an interest or have suggestions how to improve the design?

It’s worth adding, 90% of my shooting is with 100-125 yards.  It would be be nice to stretch it out to 200 with this bullet.  I think a heavier 180-200 version might be handy too. 

[petergallo]

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Anyone else up for this type of bullet?  I’ll be there are at least a few out there! 

[richarddupraz1]

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357shooter, I think that bullet would be a winner.                                                                                                                                                                                                                                                                    I have used a  7.62×51 / 308, Mauser in cast bullet bench rest matches for some yrs. now.  And have a new Rem. .308 700 that is about ready to go. Those two RCBS designs have worked very well except that those molds required some major effort in order to make the bullets fit.

After discovering NOE molds, they are my first stop for molds anymore  because  the quality and dimensions are unmatched.

So, with your example in mind, this is what I need. With a couple of changes.

1. Make a gas check design.

2. Overall length not to exceed 1″ Should come out at about 165-170 grns. Which would work  in the common .308 twists. Would be great for all those short necked .30’s out there and would work well at both 100 and 200 yds.

3. Meplate not to exceed .100″

4. If possible, slightly taper the front driving band to better fit the rifling leade for better bullet support.

5. And then, nose at .301″-.302″, .311 BB  and one GG as per  drawing.

I would take the first one.

[richarddupraz1]

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And  forgot to add that a 180-200 grn version of the same design with two GG would be great as well.

Richinsd

[petergallo]

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Let me draft up something, I like your ideas.  I think NOE could cut them with or without gas checks as an option at order time.

I’ll leave the in-case the same and see how the rest of your suggestions look and post back.

[petergallo]

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This is a lot like a RCBS 311-165-SIL cast with WW.  I tapered the front band to .301 but can back off of that.  I’d love to have this in a 5 cavity.  I can’t work up a plain base right now, but will give it a shot in the morning:

Added: oops, gotta shrink the bore ride to 301.  Working it now.

[richarddupraz1]

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Sounds good.

I am sure that they can do the GC. They already offer combination molds with both PB and GC in the same blocks. Sure hope this comes to pass. Have previously spent some cash with a custom mold maker for this very idea and the mold wasn’t even close.

Richinsd

[petergallo]

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OK, how’s this?  Is the front band taper to .301 too much?  There is another option, which is leave the front band at .311 and taper the bore ride to expand.

[petergallo]

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Here’s a stab a a plain base version. 

Al: Do the bases differences cause an issue, or do you have a suggestion on how to plain-base the GC bullet in the prior post?

Plain Base:

[johnrich]

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Howdy All,
  I really like both the 150 & 170 gr designs with gas checks and how about adding a hollow point option?

[SwedeNelsonKeymaster]

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357shooter

Enlarge the Lube groove in post #9 by about .020 to .070
And make the band above the GC .060
Then to make it PB make the bottom band .140

Need to be able to do both with one form tool

Take a look at our 311 155Gr. FN GC
http://noebulletmolds.com/NV/product_info.php?cPath=30&products_id=258&osCsid=7fs2jklq4hb6pk4ctih2bqnpa6
And our 311 155Gr. FN PB
http://noebulletmolds.com/NV/product_info.php?cPath=30&products_id=256&osCsid=7fs2jklq4hb6pk4ctih2bqnpa6

I hope this helps
Bullet maker, maker
Al Nelson

[petergallo]

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OK, here is what we are looking at.  Further suggestions?  Another option is to make the front band longer to adjust for the taper.

I think a hollow point option would be awesome! Wonder if the .100 meplat is big enough for a HP design.

I like the 150 grain version and the 165.  I’m just wondering which would most likely at enough interest to justify moving this to an active buy.  I think more discussion and more feedback from others will help answer that.

Al: Based on the TMT software and the the location of the CP and CG does this look good to you?  In some past design I tried to get them as close as possible, hoping for improved accuracy.  However it didn’t work out for the specific molds that I had cut.

I haven’t reworked the base of the 150 to allow for both GC and PB versions, but here is how it looks at this point as a plain base:

[richarddupraz1]

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The picture of the GC design in reply #9 is exactly what I have had in mind.

For my purposes, I would make just one small change. And that is to make the overall length 1″ instead of .987″ and  still stay with in the rifling twist limitations. Reason being is then the target weight of 170 grns + or – can be reached I think. This weight range has proven over the years to be an ideal weight for the .308 with jacketed target shooters. Looking at beyond 100 yds.

I also believe that if this design would be added to NOE’s normal inventory it would be very popular because there is not a lot of choices out there for the short necked 30’s.

When do I send my money?

Richinsd

[petergallo]

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OK, need some design team feedback (if you are replying you are part of the design team).  I’m applying the latest suggestions so we can all see the results.  Note the estimated weight on the detailed diagram contains the weight if cast in WW.  Did this get to long or is it still good with everyone?  Heck I would like this only as a GC design, maybe the 150 as a plain base.  Let’s focus on this 170 grain design first.

Thoughts?

[Author]

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