7MM Rem Mag - H4350


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Hew24
September 26, 2013, 03:35 PM
Hello

New to forum and reloading. Had a heck of a time finding any powder. Did manage to get some H4350. Picked up some Nosler AB - 140 gr bullets and couldn't find any load data for that combo anywhere. I even emailed Nosler and Hodgdon , to my suprise , still no response. I made an educated guess (going by similar on the chart) loading fairly light until I was able to get a perfect (or close) load for what I have. 59 gr of H4350 will shoot a group inside a nickel at 100yds (8 shots). I have a Tikka 7MM with an inexpensive scope. I tried 58.5 and 59.5 with very little difference. I will be trying 200 yds tonight to see what happens next.
The reason I started loading my own is because I want to be able to shoot 500 yds consistantly. I had a spring Griz draw and the closest I came was 500 yds to getting one. I am only comfortable up to 300 with taylor made bullets , and iffy at that. I didn't even pull the trigger. 14 Griz in 4 days and came out with nothing. At least I didn't take silly shots leaving something injured or whatever.
Does anyone have any suggestions to help my accuracy shooting to 500+ yds ? I'm going to see what happens with what I have and then maybe try 1/10th gr's ? Thanks........

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jwrowland77
September 26, 2013, 04:40 PM
Only thing I can think of is practice practice practice. Know your drop tables for you bullet and MV and know you MOA adjustments. Then it's just a matter of putting the crosshairs on it and pulling the trigger and on holding a little left or right for windage.

PS I love 4350 in my 7mm RM. I use a Hornady 139gr BTSP. I use IMR4350, but have had the same type of results. 5 shot groups at 100yds that can easily be covered by a dime.

NCsmitty
September 26, 2013, 05:29 PM
Welcome to THR, Hew24.

14 Griz in 4 days and came out with nothing. At least I didn't take silly shots leaving something injured or whatever.

And you are to be commended for having true hunter restraint under the circumstances. Too many hunters will chance iffy shots when they're running low on hunting time, and end up losing game to wounding shots and never recover them.

Your loads are running on the top end for that bullet weight, as you likely know, but it's ok if you can hit your intended target consistently.
I know components are hard to come by, but I would like something at least in the 160gr range in a bonded style when thinking about big bear.


NCsmitty

jmr40
September 26, 2013, 07:48 PM
Load data here

http://data.hodgdon.com/cartridge_load.asp

H4350 wouldnt be my first choice for this, but it is what you have. You should be able to get a load that will work. They show 59 gr as a max load with Partitions. The AB's would probably be about the same. If youre not gettting any pressure signs I might stay where you are. Certainly not any more and maybe back off a bit. Do you have a Chronogaph? In not you really need one, measuring velocity is a far better way to predict pressure.

R00KIE
September 27, 2013, 06:15 PM
I just happened to be writing down this very load data for 140gr noslers using H4350


140 Nosler Partition-
56gr of H4350 = 2808 fps
58gr of H4350 = 2907 fps and that's a max load.


Saw slightly better results with IMR4350

And slightly better yet with Accurate Powder 4350

And like previously stated, not much difference if you're happy with your accuracy, just practice.

gamestalker
September 28, 2013, 03:00 AM
Hogdon shows 56.0-56.0 for that bullet with H4350. I personally use RL22, but I've had pretty good performance with IMR-4350 and a couple others too.
What I might suggest is stepping up to a heavier bullet, especially for grizz. I now use RL22 for all my 7 mag needs, and it will push a 160 gr. at better than 3000 fps and with some very impressive accuracy, which also improves trajectories at extended distances. Use what you have, but keep an eye on pressures, as you are up at the top of the load table with that powder.

GS

Clark
September 28, 2013, 04:13 PM
I can get small 1.5" groups at 100 yards with 130, 140, or 150 gr Nosler Ballistic tips and H4350.

I have never been able to keep them below 2 moa at 600 yards, so I can't hunt at that range.

The best I have consistently done with one 7mmRM rifle is 2.4 moa at 500 yards, and I have hunted out to 500 yards.

When the targets are getting further away, the shooting needs to be more accurate, and yet the wind is having a bigger effect. It is like I have run into a wall of difficulty getting my effective range out to 600 yards.

I am about to spent the next couple weeks trying again.

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