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Should I crimp a jacketed projectile?
Discussion regarding the reloading of ammunition and tuning of loads for accuracy
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sniper
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PostPosted: Wed Dec 13, 2006 5:32 pm    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

[quote="gelandangan
Hi sniper... I got them calibers and hunted with them calibers. I want the 300 whisper because it is a 300 whisper. Gelan[/quote]

Embarassed Woops; Open mouth, insert foot! Seems to be happening more than usual, of late.

Anyway, be safe, and enjoy!
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Bushmaster
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PostPosted: Wed Dec 13, 2006 5:47 pm    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Gettin' old are ya Sniper???

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1895ss
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PostPosted: Wed Dec 13, 2006 6:02 pm    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

sniper wrote:

Embarassed Woops; Open mouth, insert foot! Seems to be happening more than usual, of late.

Anyway, be safe, and enjoy!

We all do it from time to time and for most/some of us we're to old to learn from our mistakes.

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sniper
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PostPosted: Thu Dec 14, 2006 8:41 am    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Bushmaster wrote:
Gettin' old are ya Sniper???

Yup: at that unique stage of life: Old, Fat & Ugly. Viking And ya know, I don't mind much! Except sometimes. Cool There's ALWAYS something new to try and learn.
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PaulS
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PostPosted: Wed Dec 27, 2006 12:31 am    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

gelandangan wrote:
Dimitri wrote:
gelandangan,

300 Whisper:
www.stevespages.com/jp...hisper.jpg

Dimitri

Whoops!!! that cartridge dimension is WRONG!!! it is too long by 0.04". JD Jones, the inventor of this cartridge say to use 1.360" CAL. Shocked
Not that it matter to you guys I suppose... Embarassed
Gelan

There is a lot of mis-information at that site. Anytime you want to use loading data remember to check the loads against a manual or two. There are more overloads there than any other site I have ever visited. Some of the information is great - some is right out of the book but for most of the loads the maximum load listed is considerably over the listed maximum in any manual. always be careful when using information from a website that is not a manufacturer of retail ammo or components. see my signature!

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Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads
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steve4102
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PostPosted: Wed Dec 27, 2006 9:05 am    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Quote::
There is a lot of mis-information at that site. Anytime you want to use loading data remember to check the loads against a manual or two. There are more overloads there than any other site I have ever visited.

I used to think that Steve had some overloads as well. That is until I did a lot of double checking in many manuals.

For example, Hodgdon lists 54gr of H4895 as max in 300WSM 165gr. Steve lists 57.8gr as max for 165gr bullet. That would seem to indicate that he has listed an overload. Until you dig deeper and find that Sierra #5 lists 57.8gr of H4895 as max for 165gr bullet. Every max load that I have found on Steve's site can be found published in a reloading manual
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Bushmaster
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PostPosted: Wed Dec 27, 2006 9:24 am    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Although I agree with you to some degree, steve4102. I have to admit that some of his (stevespages) load data is somewhat hard to find in other manuals. I do keep his site on my favorite list and use his site as a reference for some load data, I am hard pressed to use his higher loads as I find that 36.5 grains of W-748 to be a bit steep for a .30 WCF (.30-30 Win) using a 170 grain bullet. The highest that I have used is 33.0 grains and that exceeded factory by about 100 fps. I can just amagin what 36.5 grains would do. I would MORE THEN CAUTION anyone planning to use his higher charge levels.

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DallanC
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PostPosted: Wed Dec 27, 2006 10:37 pm    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Be aware that around 2000/2001 Hodgdon reduced their loads dramatically in their manuals. I have manuals before that time that are all consistant with their 7STW data but then suddenly all loads got reduced by around 7-10%. Some people felt it was due to them wanting a tad more breathing room for legal reasons. I emailed and asked them and they only said "we retested the data and the current data is what we found"

/shrug


-DallanC
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PaulS
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PostPosted: Fri Dec 29, 2006 3:44 am    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Powder changes from lot to lot and I suppose it could change a lot from year to year. I try to keep current data all the time but those manuals are expensive and I own a bunch - I could no more replace them all each time a new one came out - Thats why I keep the manufacturer's websites and phone numbers close by. I have been calling Sierra so much I know who to ask for and he recognizes me. I figure if a powder company is reducing its loads because it migh be high enough to be considered marginal in a gun manufactured for it then I will use the lower charge. A few extra fps has never been worth much to me without accuracy. Most of my loads are well below maximum - they are where it gives me the best and most consistant accuracy.

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Paul
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Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads
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steve4102
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PostPosted: Sun Dec 31, 2006 1:00 pm    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Bushmaster wrote:
Although I agree with you to some degree, steve4102. I have to admit that some of his (stevespages) load data is somewhat hard to find in other manuals. I do keep his site on my favorite list and use his site as a reference for some load data, I am hard pressed to use his higher loads as I find that 36.5 grains of W-748 to be a bit steep for a .30 WCF (.30-30 Win) using a 170 grain bullet. The highest that I have used is 33.0 grains and that exceeded factory by about 100 fps. I can just amagin what 36.5 grains would do. I would MORE THEN CAUTION anyone planning to use his higher charge levels.

Yup, we have to be careful with his and all load data. Same old, same old, Starting low and working up is the only safe way to do it.
BTW, I did find Hornady data that lists 36.5gr of W-748 as max for the .30 WCF with 170gr bullet. It has it listed at 2100fps out of a 20in M94.
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Bushmaster
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PostPosted: Sun Dec 31, 2006 1:11 pm    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

I'm getting 2100fps using 33.0 grains of W-748 and a 170 grain Speer FN now from a Mod 94 20" barrel...

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1895ss
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PostPosted: Mon Jan 01, 2007 12:14 am    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Some of my Hornady data lists 36.5 gr as Max with a velocity of 2200 fps using a 170 gr bullet and 20" bbl and another Hornady manual lists 35.2 gr as Max with 2100 fps velocity. As always work up slowly and watch for high pressure signs.

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sniper
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PostPosted: Sat Jan 06, 2007 9:19 am    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Hey, Gelan:

I got one of the Lee collet typpe crimpers. I am closing in on a couple of good loads for my 257 Roberts, and will see if crimping will make a difference. AAAh, DArn, Cant thype for nothing...hurt my neck, and can't look at the keyboard.
Till next time.
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Bushmaster
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PostPosted: Sat Jan 06, 2007 9:41 am    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

Sniper...Get a mirror and angle it at the key board. Besides hunt and peck isn't typing...Looks more like you are suffering from my disease. "Fat Fingers"... Very Happy

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DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
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gelandangan
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PostPosted: Sun Jan 07, 2007 3:27 pm    Post subject: Re: Should I crimp a jacketed projectile? Reply with quote

sniper wrote:
Hey, Gelan:

I got one of the Lee collet typpe crimpers. I am closing in on a couple of good loads for my 257 Roberts, and will see if crimping will make a difference. AAAh, DArn, Cant thype for nothing...hurt my neck, and can't look at the keyboard.
Till next time.

Hi Sniper

Yes I got it right now I think Smile I did use the Lee crimper too.
The test report is here
www.huntingnut.com/ind...amp;t=2323

Apparently, I got two fold problem. First of all, I got a very tight chamber. And second, I have different BRAND of cases.

The ones that works are PMC cases and the ones that don't are Norinco cases. The norinco are a tad thicker on the wall. This made the neck much thicker than the chamber could handle.

I will trim the neck wall later Smile

Anyhow, htanks for your help.


Gelan

PS. Can't look at the keyboard? is it the gut? too much cookie over Christmas? Very Happy Very Happy

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