300 Win Mag ELD-X load testing?

[excaliber]

300 Win Mag ELD-X testing finally

I was finally able to get to the range and shoot some of these 200 gr ELD-X's out of my 300 Win Mag with 26" bbl.

I'm using Win Brass(WW Super) and Fed 215M primers and two powders(H1000 and RL22)
I was just checking speed with the magnetospeed sporter attached.
All loads impacted in the roughly the same spot 4.5" high, 2.5" right so that's a good thing.


Here's the speeds I saw today. All loads were with the 200 gr ELD-X bullet using Win WW Super Brass and Fed 215M primers. Air temp was 61-63 deg with 37% hum.

73g H1000

2751 fps

2735

2742 avg 2742 fps

I skipped right to 75g of H1000 because of severe lack of speed

75g H1000

2833

2805

2794 avg 2810 fps


This was still disappointing so I jumped to 76 g

76G H1000

2873

2835

2835 avg 2847

Then I jumped to 77 g and then 77.5g the es was much better but still too slow for my liking

77g H1000

2895

2892

2897 avg 2894 fps

77.5 gr H1000

2901

2880

2886 avg 2889 fps there was no gain with the additional .5 gr here. It was actually slower.

There were no pressure signs at all with the H1000 and I could have easily gone higher on the powder charge. How much more I don't know and I'm not sure if the additional charge will get me to 2950 fps or better.


I also loaded up some of the 200 gr ELD-X bullets with RL22

Here's how they did.

72g RL22

3025

2987

3009 avg 3007 fps



72.5 gr RL22

3047

2996

3007 avg 3016 fps.



There were very slight pressure signs as the primers were slightly flattened and cratered a very tiny bit but not too bad. I did not go any further as this is faster than I think I want this bullet to shoot and the pressure signs said to take it easy. No issue with bolt lift at all. I bet I could have gone up to 73 gr with no issues.

H1000 has much better ES than the RL22 but it's lacking speed. I'm not sure what to do right now? I like the RL22 speed but the temp sensitivity and es isn't the best.

The RL22 is so much faster. 72 gr of RL22 gets that 200 gr bullet moving along pretty good.

My first impression is I do not like the H1000. It's too slow, uses to much powder and is a compressed load and isn't as accurate or fast as the RL22 in limited testing. In my limited time of reloading I have found H4831sc and now H1000 to be on the slow side.

I'm going to be loading up some H1000 from 78 to 80 grs and see if that is any better. I'll report in after the next range session as I'll be zeroing and checking groups here shortly(I hope)

 

[Lefty7mmstw]

I shoot plenty (should really say only rl22 I guess)of rl22 in my 300win; most of what my rifle eats is under a 165 hdy interlock. I wouldn't worry about rl22's temp. stability. There are plenty of other things to worry about while shooting. Simply assume a bit of loss and work with it.

I'm at 3280 fps at about 80 degrees and about 3200 fps at 0 degrees with my rifle (with 165's), but it shoots well no matter the temp.. You could likely get to about neutral speed if you add one grain powder in your cold weather loads...

If you want to stay with Hodgdon, I suggest a heavy dose of retumbo behind that 200 grain pill...

 

[tbrice23]

Re: 300 Win Mag ELD-X testing finally

I was finally able to get to the range and shoot some of these 200 gr ELD-X's out of my 300 Win Mag with 26" bbl.

I'm using Win Brass(WW Super) and Fed 215M primers and two powders(H1000 and RL22)
I was just checking speed with the magnetospeed sporter attached.
All loads impacted in the roughly the same spot 4.5" high, 2.5" right so that's a good thing.

]My first impression is I do not like the H1000. It's too slow, uses to much powder and is a compressed load and isn't as accurate or fast as the RL22 in limited testing. In my limited time of reloading I have found H4831sc and now H1000 to be on the slow side.[/FONT][/COLOR][/COLOR]

I'm going to be loading up some H1000 from 78 to 80 grs and see if that is any better. I'll report in after the next range session as I'll be zeroing and checking groups here shortly(I hope)





[/FONT][/COLOR]

You could try IMR7828. MY 300WM loves it with 190gr vld.

 

[BEEMAN]

Re: 300 Win Mag ELD-X testing finally

I just run H1000 in my 300 WM; But you could try R26 and see how it does.

 

[excaliber]

I just picked up a pound of RL-26. I'll load up some and test them on my next range outing. If the weather holds it may be tomorrow.
I'll post results here.

 

[NW Hunter]

Guys, I got out and shot my initial loads of ELD-X 200 grainers.
I set the bullets at CBTO 2.909"- .010" off the lands in my 24" Bartlein 5R barrel.
The components are H1000 powder, BR2 primers and RWS brass.
Starting load was 75.0 gr and top load was 77.5 gr shot at 100 yards.

All loads were close to MOA with two shots almost touching and one flyer.
One group shot a .452" group with 77.5 grains.

No pressure signs with 77.5 and a magnetospeed velocity of 2876 fps.
Unfortunately, I didn't load high enough charges, so back to the range!

I will be loading at .010" off lands again with H1000 charges of 77.7, 77.9, 78.1 and 78.3.
I hope to find the middle charge of the node.

Target pictures aren't the clearest. I hope they help.

 

[excaliber]

I saw some interesting info on both the H1000 and RL-26 today with the 200gr ELD-X 200. RL-26 is much faster with less powder. I did not get above 75 gr of RL26. I went to 79.5gr of H1000. I've attached two targets I shot into.

The Impact climbed with the powder charge increase with the H1000. The Rl26 had a few flyers and I'm not sure if it was me or a first load after cleaning etc. It was most likely me.

Both targets are 12 shot groups with the following load charges.

H1000 78g 45 deg

2914
2902
2918 avg 2911 fps Primers were just starting to flatten


H1000 78.5g 45 deg
2913
2925
2948 avg 2928 fps noticeable primer flattening accurate load

H1000 79 deg 46 degrees
2967
2951
2950 avg 2955 fps Close to max pressure as primers are really flattened out accurate load

H1000 79.5 g 46 degrees
2953
2972
2971 avg 2965 fps This is definitely max pressure Do not go past this load charge


Then I tried the RL 26 This is a slower burning powder yet a much faster powder. Load data from Alliant said 74 gr with the 200 gr ELD-X and FED 215 primers will shoot 2939 fps. They were pretty darn close.


RL-26 73.5 g 48 deg
2943
2908
2909 avg 2920 accurate load no pressure signs


RL-26 74g 48 deg
2984
2951
2948 avg 2961 fps Primers starting to show pressure slight flattening accurate load

RL-26 74.5g 50 degrees
3005
3002
2994 avg 3000 Primers are flattened out pretty good here This is close to max.

RL-26 75g 50 degrees
3048
3026
3028 avg 3034 I would not go any further than this . This is Max load. There were no bolt issues or extraction issues on any of these loads.


It looks like 74 gr of RL-26 is giving me the speed I need as does 79 Gr of H1000 but the H1000 is showing more flattening of the primers and more pressure.

I like the accuracy of the H1000 but the RL 26 looks pretty good too. The Magnetospeed seems to have less affect and barrel harmonics with the RL-26.

I am going to start to zero in next week and work on ladder testing.


Until next week…………….

 

[excaliber]

I'm getting pretty close now. It looks like 79 Gr of H1000 and 74 gr of RL-26 are both accurate and give me 2960+ fps.

It was really windy at the range on Friday so I just decided to shoot a few rounds and try to get close to zeroing.

The H1000 seems to be a bit more accurate but it was really hard to tell. I need a more solid rear rest as the Caldwell bag doesn't cut it at all.
At 200 yards 78.75 and 79 gr of H1000 are both very accurate just slightly different impact on the target.

 

[excaliber]

two into the same hole at 200 yards with 79 gr of H1000

 

[excaliber]

74 gr RL-26 9" inch gong at 300 yards. I'm surprised it shot this well into the crosswind. It's still early in testing but I was never able to get the Accubonds to shoot this well.

I'll be shooting out to 500 yards this weekend so I'll give another report

Winchester Brass/Fed 215 primers. C.O.A.L is 3.50" All bullets are seated at .1 off the lands so they have a pretty good jump. Chamber OAL is 3.60" touching the lands.

 

[Wind Gypsy]

66.9 gr h4831sc, 210m, 200 eldx, nosler brass shoots well out of a browning xbolt 300 wsm. About 2800 fps. I'd try rl26 but it thumps me plenty as is.

 

[rosseickhoff]

I've been trying the 208 edl match with h1000. Worked up to 78gr averaged 2875 out of a 24" barrel. A compressed load to fit in the 3.45 mag well so didn't go higher. No pressure signs. Haven't got better than 3/4 moa at 100 yards but shot it to 700 yards and got a 5 1/2" group. Going to try some hybrid v100 to see how it shoots. Also want to try some 230grn Bergers.

 

[shawnb]

Excaliber- i would have tested that 77gr h1000 more. 3 shots had very little velocity spread. And your only 65ish fps of what youre trying right now around 2960ish.

Can i ask why youre so worried about 65fps?

 

[excaliber]

I think of it this way and some might not agree. If 79 gr of H1000 is faster and is very accurate why would I want to lose speed? I doubt that 77 gr of H1000 could be any more accurate than what I'm seeing right now.
That first target photo of 78.75 and 79 gr of H1000 at 200 yards is accurate enough for me.
77 gr was accurate too but too slow for my liking.

I had this custom gun built to shoot a heavier bullet as fast as I accurately can with no pressure issues. I'll be back at the range tomorrow for another session.

Excaliber- i would have tested that 77gr h1000 more. 3 shots had very little velocity spread. And your only 65ish fps of what youre trying right now around 2960ish.

Can i ask why youre so worried about 65fps?