Page Index Toggle Pages: 1 [2] 3 4 5 Send TopicPrint
Very Hot Topic (More than 25 Replies) 35-40 Bullet Candidate (Read 32305 times)
beltfed
Frequent Elocutionist
*****
Offline



Posts: 1826
Location: Central Wi
Joined: Dec 20th, 2007
Re: 35-40 Bullet Candidate
Reply #15 - Jul 26th, 2016 at 10:29am
Print Post  
Sgt Dog.
Take a look at my Elliptical minigroove bullet in the thread on the 40-60 maynard bullet choices to see what it looks like with
  
Back to top
 
IP Logged
 
beltfed
Frequent Elocutionist
*****
Offline



Posts: 1826
Location: Central Wi
Joined: Dec 20th, 2007
Re: 35-40 Bullet Candidate
Reply #16 - Jul 26th, 2016 at 10:31am
Print Post  
to see what the Elliptical ogive with 50% hemi meplat/nose looks like
beltfed/arnie
  
Back to top
 
IP Logged
 
SgtDog0311
Senior Forum Member
****
Offline



Posts: 391
Joined: Mar 19th, 2014
Re: 35-40 Bullet Candidate
Reply #17 - Jul 27th, 2016 at 9:33am
Print Post  
Hiwall55 wrote on Jul 25th, 2016 at 8:49pm:
Here's 3 that will shoot well to the ram line


Highwall55,   Those are good looking bullets, all three!  Who made your molds?  And what weight?

How much under bore size is the nose on the far right?

And on the middle one (you'd call that an elliptical, right) is any of that nose on the middle one bore riding diameter?

Doesn't seem like I see many bullets in newer design with lube and driving bands that all fit in a half inch long case neck but sure enough looks like those do. 

Frank, Got a dr appt here in a few minutes but afterwards plan on making changes to that drawing to the lube grooves and I'll draw the graduation in reduced bands and save one like that too.   But would you be so kind to say why you thought that a good idea.   Is the theory that it is better for alignment than two at bore diamerter?   And would I anticipate that it would be a little more of a push to chamber fully.    I am wondering about that aspect since I'd have minimal neck tension and I wouldn't want the lands to possibly seat it deeper at chambering.   Would you anticipate that being an issue with greater-than bore size driving bands?
  

Best Regards,
John
Back to top
 
IP Logged
 
SgtDog0311
Senior Forum Member
****
Offline



Posts: 391
Joined: Mar 19th, 2014
Re: 35-40 Bullet Candidate
Reply #18 - Jul 27th, 2016 at 9:34am
Print Post  
beltfed wrote on Jul 26th, 2016 at 10:31am:
to see what the Elliptical ogive with 50% hemi meplat/nose looks like
beltfed/arnie


Armie, I had a look.  Thanks!  Think I understand now.
  

Best Regards,
John
Back to top
 
IP Logged
 
kkid66
Full Member
***
Offline



Posts: 186
Location: central tx
Joined: Jun 4th, 2014
Re: 35-40 Bullet Candidate
Reply #19 - Jul 27th, 2016 at 10:42am
Print Post  
Hiwall55 wrote on Jul 25th, 2016 at 8:49pm:
Here's 3 that will shoot well to the ram line

Highwall that center bullet looks familiar and dont carry much lube but carries more than the 360grain Dan T grooveless bullet I got from you. LB
  
Back to top
 
IP Logged
 
frnkeore
Frequent Elocutionist
*****
Offline



Posts: 7664
Location: Central Point, OR 97502
Joined: Jun 16th, 2010
Re: 35-40 Bullet Candidate
Reply #20 - Jul 27th, 2016 at 11:45am
Print Post  
The leade area of your chamber is .115 long @ 3 deg (plus the transition of the chamber to the leade) and is dead space behind the .348, first band.

The angle fromed between the proposed .354 band and the .348 band, would be 1.54 deg and be .112 long. The .350 band that I suggest, would make slight contact but, at .040 wide, would create, very little resistance with it's .350 diameter.

If your leary of the .350 band, make it .348 but, I would leave the .354 band to help in aligning the bullet as it moves through the leade, into the groove. 

Frank
  

ASSRA Member #696, ISSA Member #339
Back to top
YIMAIM  
IP Logged
 
SgtDog0311
Senior Forum Member
****
Offline



Posts: 391
Joined: Mar 19th, 2014
Re: 35-40 Bullet Candidate
Reply #21 - Jul 27th, 2016 at 1:03pm
Print Post  
Frank,  I'm not leary and looking for exactly this kind of input.

If I was better with the software I'd draw the chamber/case and bullet to illustrate what you've said.   I'm way slow combining all three.    

Absent doing that I think I understand your rational/explanation and like anything that makes the fit better and gives a tighter chambering without too much added push in chambering... so I think I like it.

By the way, look at the lube capacity on this NOE.   It's a copy of the only thing I've shot in this so far (Lyman 358318) and I got a good lube star while shooting in 80* weather.   Of course I'm not comparing apples to apples since this was a gas checked bullet.  Still, interesting to see the lube looked sufficient, judging from the star.  That was with the 40gr of OE 1.5.   Didn't expect and didn't get any leading.
  

Best Regards,
John
Back to top
 
IP Logged
 
SgtDog0311
Senior Forum Member
****
Offline



Posts: 391
Joined: Mar 19th, 2014
Re: 35-40 Bullet Candidate
Reply #22 - Jul 27th, 2016 at 1:05pm
Print Post  
Can't vouch for how true they were to lube groove dimensions of the original Lyman.

But here is the lube star.
  

Best Regards,
John
Back to top
 
IP Logged
 
beltfed
Frequent Elocutionist
*****
Offline



Posts: 1826
Location: Central Wi
Joined: Dec 20th, 2007
Re: 35-40 Bullet Candidate
Reply #23 - Jul 27th, 2016 at 2:36pm
Print Post  
Sgt Dog,
Indeed that NOE 360318 bullet looks like a Very good copy of the orig Lyman 358318, of which I have one.
It is noted that I have been shooting the 358318 bullets in
9+1 ww/lino in my 358 Win deer rifle in two persuasions. 
Mostly one, in which I paper patch it and shoot it with a case full of 3031 to a velocity of 2350fps over my Oehler.
Have taken a good number of deer with this rifle/load.
Its very effective but with minimal meat damage.

I remain interested in and following your progress with bullets for your 35-40 because I have a work in progress finishing my 35-50 Maynard rifle on a Brg BPCR.I have a 10 twist Lilja barrel installed so far, but need to reassemble the rifle, D&T barrel for Unertl blocks, etc. "Like I need another project to finish..I do have an NEI mold in 35 :   358-300gr GC. Used to shoot it in a Shortened/long neck beltless 358 Norma Mag wildcat yrs ago. But body length may be an issue with the 35-50 chamber. Actually, if I can get "off dead center" on this 35, I would have a mold cut that is similar to my 40 cal Elliptical Minigroove bullet, but proportionally longer since I have the faster 10 twist in the 35.
OTOH(re. too many calibers,  projects), Was actually debating selling the like new tapered octagon, blued 35-50 barrel and getting back to a 38 cal for  which I already have a number of molds,etc. and a tight neck match  38-72W reamer from Dan T. 
beltfed/arnie


  
Back to top
 
IP Logged
 
SgtDog0311
Senior Forum Member
****
Offline



Posts: 391
Joined: Mar 19th, 2014
Re: 35-40 Bullet Candidate
Reply #24 - Jul 27th, 2016 at 4:10pm
Print Post  
Well I miscalculated where the case mouth would fall with the bullet seated .500 deep.  But then again seating depth will be determined by accuracy.   

Were I to just cover the first lube groove in front of the last .359 band when I start load testing that would have the mouth at .470 from the base and the chamber filled better by the first two driving bands per Frank’s recommendations.   Frank, in your first post you said .352 as the larger but in a later one said .354.     Did I use the correct one?   

So, here it is modified with shallower lube grooves and graduation in the reduced driving bands.   

Other changes produced by those two adjustments:
*Reduced lube from .085 to .061, still almost double the old Lyman bullet.
*Jumped up the weight by 4gr from 282gr to 286gr.
*Increased the BC from .4077 to .4136.
*Increased the distance between center of gravity and center of pressure from 43.80/46.46 to 43.60/46.34.

The original Sage version might be of interest.  I’ll post a picture of that too on the next page.  (Only know how to post one picture per post).   
  

Best Regards,
John
Back to top
 
IP Logged
 
SgtDog0311
Senior Forum Member
****
Offline



Posts: 391
Joined: Mar 19th, 2014
Re: 35-40 Bullet Candidate
Reply #25 - Jul 27th, 2016 at 4:13pm
Print Post  
Just in case anyone is interested, this was what I borrowed off Harlan (after talking with him first of course).

You can see from this one that it must have been me that snuck those deep lube grooves in during one or other of my evolutions.
  

Best Regards,
John
Back to top
 
IP Logged
 
SgtDog0311
Senior Forum Member
****
Offline



Posts: 391
Joined: Mar 19th, 2014
Re: 35-40 Bullet Candidate
Reply #26 - Jul 27th, 2016 at 4:17pm
Print Post  
Arnie,  I'd like to see a 38-72.  Not sure I have before.

I have way too many projects... especially for a guy trying to delve into the BPCR world for the first time... but I wouldn't give any up either Smiley

beltfed wrote on Jul 27th, 2016 at 2:36pm:
Sgt Dog,
Indeed that NOE 360318 bullet looks like a Very good copy of the orig Lyman 358318, of which I have one.
It is noted that I have been shooting the 358318 bullets in
9+1 ww/lino in my 358 Win deer rifle in two persuasions. 
Mostly one, in which I paper patch it and shoot it with a case full of 3031 to a velocity of 2350fps over my Oehler.
Have taken a good number of deer with this rifle/load.
Its very effective but with minimal meat damage.

I remain interested in and following your progress with bullets for your 35-40 because I have a work in progress finishing my 35-50 Maynard rifle on a Brg BPCR.I have a 10 twist Lilja barrel installed so far, but need to reassemble the rifle, D&T barrel for Unertl blocks, etc. "Like I need another project to finish..I do have an NEI mold in 35 :   358-300gr GC. Used to shoot it in a Shortened/long neck beltless 358 Norma Mag wildcat yrs ago. But body length may be an issue with the 35-50 chamber. Actually, if I can get "off dead center" on this 35, I would have a mold cut that is similar to my 40 cal Elliptical Minigroove bullet, but proportionally longer since I have the faster 10 twist in the 35.
OTOH(re. too many calibers,  projects), Was actually debating selling the like new tapered octagon, blued 35-50 barrel and getting back to a 38 cal for  which I already have a number of molds,etc. and a tight neck match  38-72W reamer from Dan T. 
beltfed/arnie



  

Best Regards,
John
Back to top
 
IP Logged
 
SgtDog0311
Senior Forum Member
****
Offline



Posts: 391
Joined: Mar 19th, 2014
Re: 35-40 Bullet Candidate
Reply #27 - Jul 27th, 2016 at 4:27pm
Print Post  
And this would sacrifice very little lube leaving .059cc if I went back to a seven band.  I think I eliminated it originally trying to get more lube capacity.    

Comments here make me wonder if that was needed.

And Frank, I plugged in the .354 on this one just to see what it did elsewhere.   Really just need to know which you calculated the dimensions from, .352 or .354?

By the way, for anyone, the only thing I was sort of hard over on was the longer base band.   In emailing to Brooks one time he said he liked to stay north of .100, .120 being better.   So I'm not basing it on much other than someone smarter than me on the topic.
  

Best Regards,
John
Back to top
 
IP Logged
 
frnkeore
Frequent Elocutionist
*****
Offline



Posts: 7664
Location: Central Point, OR 97502
Joined: Jun 16th, 2010
Re: 35-40 Bullet Candidate
Reply #28 - Jul 27th, 2016 at 4:27pm
Print Post  
It's looking good Smiley

I changed my mind about the diameter of that band, after I calulated the taper of the lead and found that .354 would fit better.

Frank
  

ASSRA Member #696, ISSA Member #339
Back to top
YIMAIM  
IP Logged
 
SgtDog0311
Senior Forum Member
****
Offline



Posts: 391
Joined: Mar 19th, 2014
Re: 35-40 Bullet Candidate
Reply #29 - Jul 27th, 2016 at 5:18pm
Print Post  
Frank,  Thanks so much for taking the time to help with the calculations!   Some of us didn't pay as much attention in class as we should of Smiley
  

Best Regards,
John
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1 [2] 3 4 5
Send TopicPrint