m1 bullet trajectory?

[scythefwd]

I have been trying to figure out what the difference in hight my shots will be between 100 and 300y. Online, most say that a 300y zero will be about 3 inches above a 100y zero with the garand. I am guessing that means with m2 or match ammo. Here is the question...

I looked at lead projectile ammo (rem, federal, hornady, win) today, and of the ones that had trajectory on the boxes... it was closer to a 7-9 inch difference between 100 and 300y. Is that accurate? I am looking to use the garand to hunt with this year, and I won't use fmj to hunt with. I thought that the -06 was a flatter round than that. I this just the difference between fmj and lead, or is the trajectories listed more common with lead rounds?

 

[30Cal]

They're all going to be about the same. When you zero at 300yds, it'll be about 3" high at 100yds. If you zero at 100yds, it'll be about 9" low at 300yds.

 

[scythefwd]

OK, so if I shoot to be 3 inches high at 100y, I can be roughly zeroed at 300y and not really worry too much about it?

 

[MartinS]

I think you would have to be hitting closer to 5 inches high at 100 yards for a 300 yard zero. How about just adjusting to hit 2 inches high at 100 yards and aiming dead on from 0 to 230 yards?

 

[SimpleIsGood229]

If possible, actually shooting it at 300 yards would be very beneficial.

 

[P-32]

I am not aware of any factory hunting ammo which can be used safely in a M-1. It can be hand loaded though.

 

[dmazur]

Get an adjustable gas nut (either McCann or Schuster), which can be adjusted for proper action functioning on your M1 with either milsurp or factory (or handloads, someday.)

The idea is to start with the largest orifice provided (or with the insert screw backed out all the way) so that the action doesn't function, then shoot and adjust (with rifle empty!) until the action cycles reliably.

One of the fastest ways is to use a single round adapter and adjust until the action locks back. If it locks back on a single round adapter, it usually will chamber each round in the en-bloc loader reliably.

Here's a link to Schuster -

http://www.adcofirearms.com/gasnuts.cfm

and here's McCann -

http://www.mccannindustries.com/scope/parts.html

Either one will work. Each has a slightly different design, but the goal is the same -- to bleed off excess gas so you don't damage the op rod.

The problem is, you have to adjust each time you switch from milsurp to commercial. If you do this annually, for hunting season, you might prefer the McCann. Keep track of which orifice screw works for each, and put each in a labeled ziploc bag. You might be able to count turns with the Schuster, but it doesn't sound very repeatable to me...

Good luck!

 

[Swampy]

I think you would have to be hitting closer to 5 inches high at 100 yards for a 300 yard zero.

Sorry, no.... The other poster(s) are correct. Come up 2-3 MOA from a 100 yard zero to be dead on at 300.

Trust me..... I know. See my tagline.

Best,
Swampy

Garands forever