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  #11  
Old 02-26-2021, 11:13 AM
mnhusker mnhusker is offline
 
Join Date: Oct 2009
Location: Minnesota
Posts: 1,469
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Both of my 1903, one with its 1918 barrel and one with a new Criterion barrel require loading to a COL of no more than 3.200 if you want the bolt to close easily.

My 1903a3 is exactly the same, it also has a new Criterion barrel.

A3 and the 1903 with the 1918 barrel I load with soft loads to tae care of the old shooter (I'm 67 y/o) and because I can still get accurate loads at 200 yards without full power loads.

the other 1903 is my Vintage Sniper rifle and I shoot 175 grain SMK with 57 grains of 4350 and the short COL works just fine without any signs of over pressure.

I have shot the Hornady 150 grain bullet and if you need to crimp it, you are doing something wrong.

Neither the 1903's nor the Garand require crimped rounds.

All the best.

John
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  #12  
Old 02-26-2021, 01:11 PM
kevin08 kevin08 is offline
 
Join Date: Apr 2010
Location: FL
Posts: 250
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Have you shot any of those 3.2Ē COL rounds through an M1?
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  #13  
Old 02-26-2021, 03:22 PM
Testelter Testelter is offline
 
Join Date: May 2019
Location: Mercer, PA
Posts: 37
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I load Speer 125 TNTís to 3.200Ē and fire them in my M1 and 1903A3, thatís all I load anymore. No issues of any kind, that overall length is fine.

Tom
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  #14  
Old 02-26-2021, 08:39 PM
Danny Danny is online now
 
Join Date: Jun 2011
Location: NE Ohio
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You don't need to crimp the projectile. Just seat the bullet for an appropriate length for the chamber and forget the crimp.
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Looking for Rifles:
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Aren't all handguards "UPPER"? If they were "LOWER", wouldn't they be "STOCK".

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  #15  
Old 02-26-2021, 08:57 PM
cranehunter cranehunter is offline
 
Join Date: Oct 2011
Location: Monroe, WI
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Quote:
Originally Posted by Danny View Post
You don't need to crimp the projectile. Just seat the bullet for an appropriate length for the chamber and forget the crimp.
Agree. No need to crimp 06.
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  #16  
Old 02-26-2021, 10:14 PM
mnhusker mnhusker is offline
 
Join Date: Oct 2009
Location: Minnesota
Posts: 1,469
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Quote:
Originally Posted by Testelter View Post
I load Speer 125 TNTís to 3.200Ē and fire them in my M1 and 1903A3, thatís all I load anymore. No issues of any kind, that overall length is fine.

Tom
Oh yeah, my M1's love that Speer 125 bullet.

When Wideners had them for 12 cents a bullet in March I bought 2000 of them .
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  #17  
Old 02-26-2021, 11:58 PM
Bml Bml is offline
 
Join Date: Mar 2019
Location: Oregon
Posts: 241
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Quote:
Originally Posted by kevin08 View Post
I'm guessing that COL will place the cannelure right at the cartridge mouth? At almost 2/10" shorter than the comparable M2 OAL, I'm guessing I should not attempt to load those with 47gr IMR4895 like I planned, seems like that much decrease would have a tangible effect on the pressure, no?




I've read the same and didn't intend to crimp originally, but am now at an impasse since dropping the COL will increase the pressure as well.
Running the Hornady 150 FMJBT with 47 gr of IMR 4895 at 3.185 is a light load. It runs 2500 fps from a M1. Hornadyís data is very conservative. Service rifle loads for the M1 are a grain or two higher.

For comparison,
HXP 70 runs 2700 fps
LC 66 runs 2469 fps
WCC 54 runs 2608 fps
150 FMJBT Hornady with 49.0 grs of IMR 4895 runs 2650 fps
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  #18  
Old 02-27-2021, 01:45 AM
Col. Colt Col. Colt is offline
 
Join Date: Oct 2013
Posts: 450
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Changing bolts can and often will change your headspace quickly and cheaply - tighter/looser chamber. I have a Remington postwar rebuilt Rock Island 03 with a 42 SA "near new" barrel (still traces of cosmoline in the markings and sight) and a new Commercial Controls ("CC") bolt that you had to pound the open with HXP. Checked headspace - barely minimum. I have a half dozen '03 bolts I picked up at gun shows - a well worn "NS" bolt dropped the headspace into the middle of the range. Throating may still be needed, though.

There are CMP/DCM rebuilt Springfields that have been reported with short headspace/throats - some that would pull the bullet by forcing it tight in the rifling upon chambering. If someone installed a barrel and never checked the chamber or finish reamed the throat, same thing could happen.

I would have the headspace and throat checked. Once I knew the gun was right, THEN and only then would I start crafting ammo for it. Might solve the commonality problem with your M1, too. CC
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  #19  
Old 02-27-2021, 09:14 AM
navyrifleman navyrifleman is offline
 
Join Date: Oct 2009
Posts: 1,046
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The only time you would really need to crimp a bullet would be when loading cast lead bullets. The cast bullets can have a tendency to get pushed back into the case, thus raising chamber pressure. Crimping them with the use of a special crimping die can prevent this.

Most ammunition coming from the factory does have a crimp at the mouth of the case, so crimping is not, in itself, a hazard to pressure. But it is not a necessary procedure in reloading jacketed bullets.
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