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Offline beerbelly

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2506 Problems
« on: March 23, 2012, 04:55:17 AM »
 Rifle, is a Remington model 700, 2506 made in 1980. The Lyman book says the Col is 3.250 and Hornady says 3.240. In order to get these to chamber I am having to load them at 3.130!
I bought the bullets on the net they appear to be Hornady SP’s .120 grain. They measure out at .257 diameter and .172 long.
I am worried about pressure with them over .100 deeper in the brass. I have not fired any of them , waiting to see what you guys think!
Thanks for any help.
　
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Online Lloyd Smale

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Re: 2506 Problems
« Reply #1 on: March 23, 2012, 07:06:26 AM »
they could cause a bit more pressure but in my experience most loading manuals are pretty conservitive to begin with. Back off a grain on the charge and then work back up a 1/2 grain at a time.
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Offline huntducks

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Re: 2506 Problems
« Reply #2 on: March 23, 2012, 07:34:03 AM »
How far are you off the lans?
 
What powder how many grains?
 
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Remember it's where the first bullet goes out of a cold barrel that counts most.

Offline beerbelly

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Re: 2506 Problems
« Reply #3 on: March 23, 2012, 07:45:05 AM »
 I am about 5 thousands off the lans. Just kept going in 5 to 10 at a time until it would chamber. I am using IMR4350 at 45 grains, which is just about the starting loads given in the books.
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Offline charles p

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Re: 2506 Problems
« Reply #4 on: March 23, 2012, 08:29:58 AM »
Are the bullets semi-pointed or spire points.  Sounds like a long semi pointed bullet to me, that the ogive is touching far out.  Those are hard bullets to find now.  I always liked them in my 25.
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Offline yooper77

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Re: 2506 Problems
« Reply #5 on: March 23, 2012, 09:01:32 AM »
Quote from: beerbelly on March 23, 2012, 07:45:05 AM
I am about 5 thousands off the lans. Just kept going in 5 to 10 at a time until it would chamber. I am using IMR4350 at 45 grains, which is just about the starting loads given in the books.
Quote from: beerbelly on March 23, 2012, 04:55:17 AM
Rifle, is a Remington model 700, 2506 made in 1980. The Lyman book says the Col is 3.250 and Hornady says 3.240. In order to get these to chamber I am having to load them at 3.130!
I bought the bullets on the net they appear to be Hornady SP’s .120 grain. They measure out at .257 diameter and .172 long.
I am worried about pressure with them over .100 deeper in the brass. I have not fired any of them , waiting to see what you guys think!
Thanks for any help.
　

Your load of 45.0 grains of IMR-4350 is 3 grains under minimum charge for the 25-06 Remington according to data.hodgdon.com which is the powder manufacture. Hodgdon also shows C.O.L. to be 3.150". Your primers might protrude after firing this light load.
 
yooper77
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Offline beerbelly

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Re: 2506 Problems
« Reply #6 on: March 24, 2012, 03:25:51 AM »
 Thanks for the help guys, I haven't been at this as long as most of you and it sure is good to be able to use you guys experience.
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Offline 84Jim

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Re: 2506 Problems
« Reply #7 on: March 24, 2012, 05:36:07 AM »
BB,
I load for an early 1980's vintage 700.  My Hornady 117 boattails are 3.190" COAL.  You must have a short chamber in your gun if 3.130 is only .05 off of the lands.
Jim
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Offline broom_jm

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Re: 2506 Problems
« Reply #8 on: April 01, 2012, 04:28:17 PM »
I had a Model 70 in 7RM a while back and I had a similar problem with it.  I had to keep seating bullets deeper and deeper to get them out of the lands.  I bought a Stony Point case length gauge (back before Hornady bought 'em out) and it showed that I wasn't losing my mind; the throat really was that short.  So, I took it to my gunsmith and he was a little baffled by it, but reamed it out so that I could seat bullets up to 175 grains a little longer than the actual cartridge OAL listed for them in the books.

You might be able to do the same with you 25-'06.  If you decide to do this, choose a bullet of medium to heavy weight that you REALLY like and chamber for that.
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Offline Don Fischer

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Re: 2506 Problems
« Reply #9 on: April 02, 2012, 05:46:45 AM »
Worried about pressure seating them .100 deeper in the case? I don't think that's much to worry about. When the primer is hit, the powder starts to burn and before pressure is reached, the bullet is moved out of the case neck and into the lands. I would be more inclined to worry about being into the lands to start. Reloading mannuals are just a guide line, you need to do what you need to do to make things work in you rifle. Set up the seating die so the bullet is just off the lands. Then start about 10% below max and find your best load working up toward max. It is possible that you will get pressure signs working up but not reaching max long before you'll get a pressure sign from a bullet seated .100" to deep. Now if you were talking about .100" to long, that is another story.
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Offline shot1

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Re: 2506 Problems
« Reply #10 on: April 03, 2012, 10:43:21 AM »
My tack driving deer killing load for my 25-06 is. 49 grs IMR 4350, CCI 250 Mag primer, Rem case and 117 Sierra Pro hunter OAL 3.150 out of my Shilen 26" barrel it does 3000 fps and will shoot average on a calm day a tad under 1 inch at 300 yards.  I have shot deer with lots of different bullets in the 25-06 and the 117 Sierra really does a number on them. BANG FLOP.
Are you sure you don't have the 117 Hornady RN bullet? That is the only really blunt stubby bullet Hornady makes in .257.
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Offline huntswithdogs

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Re: 2506 Problems
« Reply #11 on: April 04, 2012, 08:47:03 AM »
BB, Take a look over on Hornady's site and compare what you have to the bullets shown there. If you have access to an older Hornady manual, take a look at it.
What ever you bought may be an older discontinued bullet. If you can, you may wanna post a picture of what you have.


HWD
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Offline SHOOTALL

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Re: 2506 Problems
« Reply #12 on: April 04, 2012, 09:21:56 AM »
the hornady reloading 4th edition say bullet 2560 HP  col shouls be 3.24 start load of 4350 43.6 gr max 47.1 gr.
NOW IF BY CHANCE YOU HAVE HORNADY BULLET 2552 , 117 GR BTSP your oal would be 3.165
 
my book does not list a 120 BTSP .
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Offline maxwelljim

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Re: 2506 Problems
« Reply #13 on: April 12, 2012, 02:47:27 AM »
Have the same problem with marlin xl7 25-06. coal 3.129 with 100gr sierra btsp. Load 52gr imr 4831. Group .50 inch @ 100 yards. Speers tested this load @ 3.095 coal. See Speers manual #14.
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