Author Topic: NOE 250-27-RF (Read 8989 times))

rsterne · « **Reply #160 on:** August 02, 2021, 04:49:01 PM »

The NOE pellet skirt is smaller than 0.260" (it is supposed to be 0.257"), do you plan on having a tapered base punch to enlarge it?.... Also, how do you plan to stop the nose of the pellet at the desired spot, both to get the desired head size, and so that the base punch will enlarge the skirt?....

Bob

Nvreloader · « **Reply #161 on:** August 02, 2021, 04:50:13 PM »

Thanks Ed

My plan is making a full set of these reamers/bushings in all the calibers of 17, 20, 22, 25 calibers.

I hate bothering the member who drew this drawing up using a CAD Program, as there is several hours work here.
I greatly appreciate his time drawing the 22/25 calibers for me.

I have to find a simple CAD program to finish up the series of bushings etc.

Don

EdinGa · « **Reply #162 on:** August 02, 2021, 04:55:17 PM »

Quote from: rsterne on August 02, 2021, 04:49:01 PM

The NOE pellet skirt is smaller than 0.260" (it is supposed to be 0.257"), do you plan on having a tapered base punch to enlarge it?.... Also, how do you plan to stop the nose of the pellet at the desired spot, both to get the desired head size, and so that the base punch will enlarge the skirt?....

Bob

I would say an adjustable punch rod would work. I could be as easy as a collar with some set screws.

rsterne · « **Reply #163 on:** August 02, 2021, 04:58:15 PM »

One other thing, for ease of manufacture.... You might consider using a tapered pin reamer (of the appropriate size) to create the taper for sizing the head.... They are 1/4" per foot of length (total taper), which works out to 0.0208" per inch, or a whisker over 0.002" per 0.100" of length for the head sizing section.... That is slightly less taper than your drawing....

Bob

Nvreloader · « **Reply #164 on:** August 02, 2021, 05:08:45 PM »

Bob
You are correct on having a tapered skirt pin to expand the skirts etc.

With my adapted press, I can adjust the depth of the pellet inside the sizing die taper,
the head pin will hold the pellet at that dimension, and then skirt pin can expand the skirt taper,
to whatever dimension, up to .260" diameter in 25 caliber.

This bushing can do all 25 caliber pellets and the 22 cal bushing will do the same,
along with the 17 cal bushing.

These reamers will be ground by D Kiff at PTG, using a throating reamer with pilot,
this is the reason for the straight section on the bottom of the bushing, to help guide the reamer etc.

Tia,
Don

EdinGa · « **Reply #165 on:** August 02, 2021, 05:16:33 PM »

Don and Bob,

I've got to say I'm pretty excited about all this. I was about ready to give up on pellet molds.

rsterne · « **Reply #166 on:** August 02, 2021, 05:26:20 PM »

So you will be using custom reamers, with a step in them?.... Expensive but a great way to do it....

Bob

Nvreloader · « **Reply #167 on:** August 02, 2021, 05:37:46 PM »

Ed

I have picked up on several non NOE pellets that don't shoot very well, in all the calibers, 17 - 22 - 25 calibers.

Could the cause BE? > the head/skirts dimensions DON'T FIT that barrel bore dimensions?

Providing that the air rifle has the horsepower/correct spec's to drive those pellets accurately etc.

This is the main reason for my drive in this area, I plan on testing several of the non accurate pellets
as soon as I can get around etc.

It is my hope that others will add viable information............

We has some very talented members here......

Don

Nvreloader · « **Reply #168 on:** August 02, 2021, 06:00:24 PM »

Bob
I have a email into PTG to a quote for this reamer, no reply yet.
My last reamer ground was less than $75.00 for a PB 17 throater.

It is a very simple reamer to grind, straight .260" section, then a 1.500*degree tapered section,
and another straight section for the pilot area.

If there is any problem areas, Dave will let me know and have a correction for it.

Don

EdinGa · « **Reply #169 on:** August 02, 2021, 07:02:09 PM »

Well, casting at 800 with my new lead thermometer put me right at 5 on my dial which is where I normally leave it. Needless to say, I had the same results. None of my heads or skirts are anywhere close to round either. I can rotate the pellets and get sizes between .248 and .250.

sb327 · « **Reply #170 on:** August 02, 2021, 07:36:59 PM »

Don,

If I understand correctly, you plan to ream a sizing bushing. Are the bushings hardened? If so, annealing would be needed.

Would it be feasible to simply start with a piece of soft drill rod with a through hole drilled and reamed to pilot dimension?

Dave

Nvreloader · « **Reply #171 on:** August 02, 2021, 07:38:10 PM »

Bob

Here is my sizing press and dies, Post # 12, this is the 22 caliber series, the 25 cal will be the same.
https://www.gatewaytoairguns.org/GTA/index.php?topic=189354.0

The 2nd photo shows the skirt (left side) and the head pin (right side) for the Crosman HP 22 pellets,
the little tip on the skirt pin is removed and polished up.

Further down the photo's shows the black threaded adjustment for the head pin,
there is a stop on the silver head pin that rests against the black adjustment screw etc.

HTH's
Don

Nvreloader · « **Reply #172 on:** August 02, 2021, 07:49:07 PM »

Dave
The bushings I have are not hardened, you can see screw the set marks from tightening in the press, 90% of the work is done by NOE,
I'll use a 241" size bushing and have the reamer with the same size pilot etc.
A file will cut the bushing..........

HTH's,
Don

Quote from: sb327 on August 02, 2021, 07:36:59 PM

Don,
If I understand correctly, you plan to ream a sizing bushing. Are the bushings hardened? If so, annealing would be needed. Would it be feasible to simply start with a piece of soft drill rod with a through hole drilled and reamed to pilot dimension?
Dave

sb327 · « **Reply #173 on:** August 02, 2021, 07:52:11 PM »

Sounds good to me! Carry on!

Dave

Greg_E · « **Reply #174 on:** August 02, 2021, 09:04:26 PM »

Ed, that's no good. At least the heads on mine measure roughly correct. That makes me think I can save mine. And if I start getting decent results I'll send some down to you. Just not sure when I'm going to try again.

Madd Hatter · « **Reply #175 on:** August 02, 2021, 09:46:53 PM »

Well, after doing a trigger adj and shooting of a bench with bags I get the same shot gun pattern just a little smaller. Still need to try the cudas to see if they group better or not.

Nvreloader · « **Reply #176 on:** August 03, 2021, 12:14:50 AM »

Ok Guys
Going with the 25 cal bushing sizer build style,

What head sizes should be considered for the 22 cal bushing, (will be copy of the 25 cal bushing),
only with 22 caliber head dimensions.

I have the following head diameters in the 22 cal bushing drawing now,
.214" -.215"- .216" - .217" - .218" -.219",
the .217" diameter is centered in the center of the total length of .625" total length.

And the same question for the 20 cal, head diameters, (think sized down 22 cal pellets), 4 head sizes?

And the same question for the 177 cal, head diameters of bushing, there should be 4-6 head diameters?

Your thoughts and suggestions,

Tia,
Don

EdinGa · « **Reply #177 on:** August 03, 2021, 12:38:07 AM »

The only thing I cast in .22 is my 30gr BBT and it's a .217. Accuracy is great in all my 22s

Nvreloader · « **Reply #178 on:** August 03, 2021, 02:12:37 PM »

Ed

I was not only thinking about the NOE and other cast pellets/slugs,
but ALL the OEM commercial pellets/slugs that don't shoot accurately,
it would be nice to have a means to correct those pellets/slugs, into shooting as accurate as possible,
providing the shooting platform fit's within reasonable spec's for the caliber etc.

Tia,
Don

Quote from: EdinGa on August 03, 2021, 12:38:07 AM

The only thing I cast in .22 is my 30gr BBT and it's a .217. Accuracy is great in all my 22s

EdinGa · « **Reply #179 on:** August 03, 2021, 04:10:14 PM »

Quote from: Nvreloader on August 03, 2021, 02:12:37 PM

Ed

I was not only thinking about the NOE and other cast pellets/slugs,
but ALL the OEM commercial pellets/slugs that don't shoot accurately,
it would be nice to have a means to correct those pellets/slugs, into shooting as accurate as possible,
providing the shooting platform fit's within reasonable spec's for the caliber etc.

Tia,
Don

Quote from: EdinGa on August 03, 2021, 12:38:07 AM
The only thing I cast in .22 is my 30gr BBT and it's a .217. Accuracy is great in all my 22s

That's a great idea. I'll try to measure some of my commercial pellets that shoot well.

Thank you to our advertisers!

NOE 250-27-RF

Author Topic: NOE 250-27-RF (Read 8989 times))