.243 & IMR 7828, a little advice please.

[notsorichguy]

I asked this in another thread but I guess when its buried in the middle (ie: a hijack) it can get missed.

:QUOTE:
I am working up a load for 65gr Bregers for my .243, I am tring to make a good 'yote round.

So far I have tried IMR3031, IMR4320 & H-4895.... all with less than stellar results.

I use IMR7828 with a nosler 95gr and I get really nice sub inch groups (100yrds) with it. But I cannot seem to find any info for 7828 with a 65 gr projectile..... I really want to try it out as I have had really good results with it in the past, that and I have 6# of it, and I cannot seem to find any other powders that are mentioned in my "books" in stock around here.

How exactly should I start working up a load for this particular powder?

Thanks!
:END QUOTE:

So here is some more info:

-I am using 45.5gr of 7828 with a 95gr Nosler Ballistic tip bullet (with good results).

-46.7 to 47 gr. of powder is absolute max for case fill with 7828 (in approx 200 of my cases).

-According to my old croney it shoots at 3120 ish fps, with my new croney 2960ish fps ( with my pet load stated above).

-Shooting out of a Remington Model 700 circa 1971.

-I am going to be using 65gr Berger Target BT Match grade bullets. (it says, 1 in 13" twist or faster, on the Label)

I was thinking I would back off to 43gr of 7828 and do a half grain increment ladder test up to 46.5gr to see what I would get. I just want to get a couple of opinions for this before I try it out.

Cheers!

 

[ben hunchak]

The slow powders such as this(7828) won't be listed for light bullets in the .243 as it is too slow burning and the light projectiles do not provide enough resistance for an efficient burn. Velocities will be too low, inconsistant, causing poorer accuracy. You would be much better off to try diff. powders of medium burning rate, such as Varget or the new 4007 on the slow side...IMHO

 

[GRiNGo]

For Berger bullets I use in my 204 and 260 I e-mailed Walt Berger and he e-mailed back all the loading info he had, and very promptly.

 

[Eagleye]

7828 is a bit slow with any bullet weight in the 243, but will work well with 95-105 grain weights. The 65 grain bullet should work better with H380, IMR 4007, IMR 4064, W748, Vihtavuori N140 or 540. Regards, Eagleye.

 

[303carbine]

I asked this in another thread but I guess when its buried in the middle (ie: a hijack) it can get missed.

:QUOTE:
I am working up a load for 65gr Bregers for my .243, I am tring to make a good 'yote round.

So far I have tried IMR3031, IMR4320 & H-4895.... all with less than stellar results.

I use IMR7828 with a nosler 95gr and I get really nice sub inch groups (100yrds) with it. But I cannot seem to find any info for 7828 with a 65 gr projectile..... I really want to try it out as I have had really good results with it in the past, that and I have 6# of it, and I cannot seem to find any other powders that are mentioned in my "books" in stock around here.

How exactly should I start working up a load for this particular powder?

Thanks!
:END QUOTE:

So here is some more info:

-I am using 45.5gr of 7828 with a 95gr Nosler Ballistic tip bullet (with good results).

-46.7 to 47 gr. of powder is absolute max for case fill with 7828 (in approx 200 of my cases).

-According to my old croney it shoots at 3120 ish fps, with my new croney 2960ish fps ( with my pet load stated above).

-Shooting out of a Remington Model 700 circa 1971.

-I am going to be using 65gr Berger Target BT Match grade bullets. (it says, 1 in 13" twist or faster, on the Label)

I was thinking I would back off to 43gr of 7828 and do a half grain increment ladder test up to 46.5gr to see what I would get. I just want to get a couple of opinions for this before I try it out.

Cheers!

Speer has a listing for 70 grain bullets using IMR 7828, they start at 46 grains and go to 50 grains.Top speed they get is 3216 fps. I have some data that worked very well in my .243, but that's for my rifle. 7828 works very well in every .243 I have had over the years.. Keep trying, you should find a load that will work for your rifle. Remington's can be made to shoot very well without a lot of fuss. You may have to got to a slightly heavier bullet, 7828 will work there too. I see the listing in the Speer manual where 7828 is used all the way up to 105 grainers.