300 Norma Mag Improved. Follow along!!!

[Hand Skills]

Performance always comes at a cost.

H1000 is special in that it has the lowest flame temp of all the 'slow' powders.

~3600°

IIRC, N570 is up over 4100°

I am on the road, and don't have access to quickload but copied this from another forum;


Powder------ Burn Temp
VV N165--- 3500
H100v ------ 3545
VV N135------ 3590
VV N160------ 3620
H1000------ 3630
VV N133------ 3630
IMR 7977------ 3660
ACC 4064------ 3700
VV N170------- 3700
Retumbo------ 3710
IMR 4831------ 3720
VV N140------ 3720
H4350------- 3760
IMR 4350------- 3760
RL23 ------- 3770
VV N130------- 3770
VV N150------- 3780
RL16 ------- 3800
IMR 7828------- 3850
H4198------- 3860
H4831------- 3870
IMR 4064------- 3880
RL26------ 3905
IMR 8208------- 3920
IMR 4166 ------- 3920
IMR 4955------- 3950
Ramshot Tac------- 3950
VV N570------- 3950
RL19------- 3980
H335------- 3980
RL15------ 3990
RL17------ 3990
RL22------ 3990
IMR 4451------ 3990
RL10x ------- 4000
VV N560------ 4020
Varget------ 4050
VV N550------ 4050
H4895------ 4060
VV N530------ 4100
VV N540------ 4100

 

[Huntnful]

Performance always comes at a cost.

H1000 is special in that it has the lowest flame temp of all the 'slow' powders.

~3600°

IIRC, N570 is up over 4100°

I am on the road, and don't have access to quickload but copied this from another forum;


Powder------ Burn Temp
VV N165--- 3500
H100v ------ 3545
VV N135------ 3590
VV N160------ 3620
H1000------ 3630
VV N133------ 3630
IMR 7977------ 3660
ACC 4064------ 3700
VV N170------- 3700
Retumbo------ 3710
IMR 4831------ 3720
VV N140------ 3720
H4350------- 3760
IMR 4350------- 3760
RL23 ------- 3770
VV N130------- 3770
VV N150------- 3780
RL16 ------- 3800
IMR 7828------- 3850
H4198------- 3860
H4831------- 3870
IMR 4064------- 3880
RL26------ 3905
IMR 8208------- 3920
IMR 4166 ------- 3920
IMR 4955------- 3950
Ramshot Tac------- 3950
VV N570------- 3950
RL19------- 3980
H335------- 3980
RL15------ 3990
RL17------ 3990
RL22------ 3990
IMR 4451------ 3990
RL10x ------- 4000
VV N560------ 4020
Varget------ 4050
VV N550------ 4050
H4895------ 4060
VV N530------ 4100
VV N540------ 4100

Awesome info!!

 

[Elk Hunter 338]

h1000 is horrible .. never EVER use the stuff.. you should send all that you have to me and i will dispose of it in my garden ,,,,...

customer just sent me info on his 300 NIMP .. he's up to 94.5 and in the mid 3400's with 180 HH and h1k

also on a side note In mine and several other peterson is the clear winner for brass use

 

[Huntnful]

h1000 is horrible .. never EVER use the stuff.. you should send all that you have to me and i will dispose of it in my garden ,,,,...

customer just sent me info on his 300 NIMP .. he's up to 94.5 and in the mid 3400's with 180 HH and h1k

also on a side note In mine and several other peterson is the clear winner for brass use

Hahaha I'll consider it .

Thank you for the great load info! I'm at 94gr. and 3330 with a 181. But also my on my first firing. The cases definitely filled chamber now that they've been shot again after the fire forming. Curious what I'll get after the second firing!

And I'm also using Peterson brass.

 

[Longrangers]

Performance always comes at a cost.

H1000 is special in that it has the lowest flame temp of all the 'slow' powders.

~3600°

IIRC, N570 is up over 4100°

I am on the road, and don't have access to quickload but copied this from another forum;


Powder------ Burn Temp
VV N165--- 3500
H100v ------ 3545
VV N135------ 3590
VV N160------ 3620
H1000------ 3630
VV N133------ 3630
IMR 7977------ 3660
ACC 4064------ 3700
VV N170------- 3700
Retumbo------ 3710
IMR 4831------ 3720
VV N140------ 3720
H4350------- 3760
IMR 4350------- 3760
RL23 ------- 3770
VV N130------- 3770
VV N150------- 3780
RL16 ------- 3800
IMR 7828------- 3850
H4198------- 3860
H4831------- 3870
IMR 4064------- 3880
RL26------ 3905
IMR 8208------- 3920
IMR 4166 ------- 3920
IMR 4955------- 3950
Ramshot Tac------- 3950
VV N570------- 3950
RL19------- 3980
H335------- 3980
RL15------ 3990
RL17------ 3990
RL22------ 3990
IMR 4451------ 3990
RL10x ------- 4000
VV N560------ 4020
Varget------ 4050
VV N550------ 4050
H4895------ 4060
VV N530------ 4100
VV N540------ 4100

I see that the burn rate for varget is higher than N570. I run varget in my bench gun and I am well over 1200 rounds with it.

 

[Hand Skills]

I see that the burn rate for varget is higher than N570. I run varget in my bench gun and I am well over 1200 rounds with it.

Burn Rate, Quantity of Powder and Peak Pressure are also contributing factors.

Comparing H1000 to N570 is relevant because the burn rates are similar.

In the case of Varget, a more apt comparison would be N140...

 

[Wedgy]

I see that the burn rate for varget is higher than N570. I run varget in my bench gun and I am well over 1200 rounds with it.

You probably aren't burning 90+ grains of Varget every shot either.

 

[Wedgy]

BTW Natchez has Reloder 33 at boutique prices and Reloder 16 also

Alliant Smokeless Magnum Rifle Powder 33 8 lb

Alliant Smokeless Magnum Rifle Powder 33 has a solid guarantee from a company with more than 100 years of experience in the industry. The powder is required to pass strict quality control measures that ensure consistent performance and accuracy. This particular powder is designed with...

www.natchezss.com

 

[Longrangers]

You probably aren't burning 90+ grains of Varget every shot either.

No but 33.8 of varget in a small case.

 

[Huntnful]

Ran out for cold/dirty bore verification this morning. All three shots fired before the sun was up.

858 yards. 4.3 Mils @ sea level.

3321, 3320, 3307 were the velocities of each shot. I'm not IN LOVE with this lol. The first shot was a dead jackrabbit basically, but not the other two that came up 1 MOA low of the cold bore. More testing must ensue . But an update none the less.

Also think spin drift is coming into play, because it was deadass calm this morning. Going to shift my zero .1 to the left to compensate for it because I really hate holding for it lol.

 

[VLD Pilot]

Ran out for cold/dirty bore verification this morning. All three shots fired before the sun was up.

858 yards. 4.3 Mils @ sea level.

3321, 3320, 3307 were the velocities of each shot. I'm not IN LOVE with this lol. The first shot was a dead jackrabbit basically, but not the other two that came up 1 MOA low of the cold bore. More testing must ensue . But an update none the less.

Also think spin drift is coming into play, because it was deadass calm this morning. Going to shift my zero .1 to the left to compensate for it because I really hate holding for it lol.

View attachment 374449
View attachment 374450
View attachment 374451

Your on to something. Still around or under 1moa.

 

[WeiserBucks]

I'd repeat that cold/dirty test a few more times to gather a larger sample size. A 9'' group at 850 yards isn't absolutely terrible, but we're always demanding better of ourselves and our equipment.

 

[Huntnful]

I'd repeat that cold/dirty test a few more times to gather a larger sample size. A 9'' group at 850 yards isn't absolutely terrible, but we're always demanding better of ourselves and our equipment.

I agree man. That first shot, also had two dry patches ran before it, just to get the loose carbon out of the barrel. That's normally what I do for a "dirty bore" first shot, and never had an impact difference. Next time, there will be no dry patches, now that there appears to be an impact difference and I need to make sure all shots are 100% equal.

 

[Huntnful]

Just verified at both 1030 and 1180 yards, that my current load does in fact have .3 mil of vertical inconsistency, even with consistent velocities. It wasn't just a coincidence on the 850 yard group from this morning.

But I do have 50 pieces of now twice fired brass to do real load development with. Stay tuned Lol.