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  #1  
Old 10-14-2019, 8:25 PM
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Default *Update* M1 Garand 30-06 reload question

I am loading for an M1 Garand. I am using Hornady 150 grain bullets and noticed the c.o.l to be shorter than the mil surplus I have been using. I took apart one of the mil surplus and noticed the cannelure is much lower than the Hornady 150 grain bullets. The weigh and length is the same for both bullets but milsurp C.O.L is longer at 3.300 and Hornady says 3.185 for their Bullet. Iím not loading for extreme accuracy but safety is a major concern. And not only that the milsurp is at 48grns powder much higher than hornadyís 46grn max.

Am I reloading a safe round (150grn, Comm brass, 43.5grn, 3.185 C.O.L) or am I missing something?

Thx

*UPDATE*
The rounds shot Thru awesome. All 50rds loaded and extracted beautifully. I was shooting at steel about 80 yards so I donít have specifics. But I was hearing the ďpingĒ at just about every shot thru iron sights.
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Last edited by jmpgnr24k; 12-26-2019 at 6:53 PM..
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Old 10-14-2019, 8:30 PM
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1) For Hornady's 150 gr fmjbt, don't go by the cannelure. It doesn't match anything, neither .308 nor 30-06. Load by oal and ignore the location of the cannelure.

2) You can't compare 48 grains of X powder to 46 grains of Y powder. You have not specified what powder you are using, nor do you know what powder is in the milsurp round.

3) 43.5 grains sounds extremely light for any powder in 30-06, that sounds more like a .308 loading.
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Last edited by kcheung2; 10-14-2019 at 8:33 PM..
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  #3  
Old 10-14-2019, 8:49 PM
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Quote:
Originally Posted by kcheung2 View Post
1) For Hornady's 150 gr fmjbt, don't go by the cannelure. It doesn't match anything, neither .308 nor 30-06. Load by oal and ignore the location of the cannelure.

2) You can't compare 48 grains of X powder to 46 grains of Y powder. You have not specified what powder you are using, nor do you know what powder is in the milsurp round.

3) 43.5 grains sounds extremely light for any powder in 30-06, that sounds more like a .308 loading.
Thx for the response.
I’m using H4895. Don’t know what the milsurp is. My biggest concern is the difference in seating depth since both bullets are the same shape and weight

And the cannelure actually sits right on. My concern was the cannelure location between the mil and Hornady bullets and the difference in overall length.

Hornady says 3.185 and that what I’m going by. Starting powder is 43.2grns.

I’m looking more for functionality than accuracy
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Last edited by jmpgnr24k; 10-14-2019 at 8:57 PM..
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Old 10-14-2019, 9:00 PM
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Hornady pressure tested their load at that COAL, so they measured the pressure. You're fine.
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Old 10-14-2019, 9:27 PM
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Quote:
Originally Posted by jmpgnr24k View Post
And the cannelure actually sits right on.
Hornady says 3.185 and that what Iím going by. Starting powder is 43.2grns.

Iím looking more for functionality than accuracy
The Hornady book length is correct with that projectile. Any longer and you can see there is not much bullet for the neck to grip.

A good functional load may be closer to the middle, maybe even slightly more. Test at least a full 8 rounds to confirm they load and eject properly.
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Old 10-14-2019, 9:52 PM
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Cool. Thx guys. I guess my question should’ve been is what I loaded according to Hornady “Safe to shoot?” I’ll answer back with test results when I’m done.

My problem was milsurp rounds were very different from reload info for a rifle that needs non-modern 30-06 loads.

So I wanted to make sure what I was rolling was safe.
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Last edited by jmpgnr24k; 10-14-2019 at 9:55 PM..
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Old 10-15-2019, 12:19 AM
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M1s do best with certain gunpowders that produce desirable
pressure curve so you don't unnecessarily beatup the op rod.
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Old 10-15-2019, 5:07 AM
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Quote:
Originally Posted by kcheung2 View Post
1)
3) 43.5 grains sounds extremely light for any powder in 30-06, that sounds more like a .308 loading.
M2 Ball is a 308 load. This is a Garand load and that means.

150's need not exceed 2800 fps
168's need not exceed 2650 fps
175's Need not exceed 2550 fps

and this is with IMR or H4895 or the equivalent there of. do not exceed published data for the Garand

As you can see these are a very mild 308 load even though they are in a 63mm long case
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Old 10-15-2019, 5:20 AM
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Quote:
Originally Posted by hambam105 View Post
M1s do best with certain gunpowders that produce desirable
pressure curve so you don't unnecessarily beatup the op rod.
Correct and there is a very narrow window of burn rates to use.
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Old 10-15-2019, 5:25 AM
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You can always get an adjustable gas port and be super safe.
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Old 10-15-2019, 6:56 AM
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Quote:
Originally Posted by hambam105 View Post
M1s do best with certain gunpowders that produce desirable
pressure curve so you don't unnecessarily beat up the op rod.
Quote:
Originally Posted by koehn,jim View Post
You can always get an adjustable gas port and be super safe.
OP is using H4895 within appropriate amounts, so no need for the modified gas plug in this case.
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Old 12-26-2019, 6:54 PM
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Update at OG post
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