H1000

[Mabia]

Has anyone using H1000 had big swings in velocity when changing batches?

I shot yesterday and went up 3 1/2 minutes from my previous day of shooting. The only difference was I opened a new can of H1000. I weigh every powder charge on a beam scale that is zeroed before I start the reloading session.

New Remington Brass
91.5 gr H1000
CCI 250 Primer
300 gr Berger OTM

Seated to jump .025

Randygun)

 

[jkupper]

I haven't had to switch batches yet, but I am nearing that point. That was something that I was worried about, but 3 1/2 minutes seems like a lot! Interested in seeing if anyone else has seen a difference that big. How different were the conditions when you shot last and shot this time?

 

[rick523]

Yep, went from 2875 fps to 3001 fps the only thing that changed was a different lot of powder. I really liked the higher vel. but knew it would not last as I only had 1 lb. of that lot. So I opened a 8lb jug added the 1lb. mixed every thing up on a shaker really well. I'm now shooting 2985 fps. got all my drops worked out, and am good to go. The funny thing was with the higher vel. my groups remained very tight, sub .25 moa. The only thing that changed was POI. Readjusted scope and all's right with the world. Well not really I guess O'bummer is still squatting in the White House.

 

[wolverine99]

Each batch is different. I was in the same boat yesterday except mine shot slower. Old keg of 1000 I only needed 91gr the new keg looks like I will need 92 or 93 grains to get the same fps.

 

[highridge1]

Yes it's very inconsistent lot to lot that's why I quit using it....

 

[azsugarbear]

3.5 MOA seems like a lot of adjustment for a new batch/lot of powder....but I have experience velocity changes with different lots of H1000. That is why I went to buying 8 lb. kegs. You get a break in price and assure consistency for hundreds of rounds.

 

[Broz]

3.5 MOA seems like a lot of adjustment for a new batch/lot of powder....but I have experience velocity changes with different lots of H1000. That is why I went to buying 8 lb. kegs. You get a break in price and assure consistency for hundreds of rounds.

+1, there is more to the story and I am sure you will have more to report after you look further into it. 3.5 moa was not the usual 20 0r 30 fps between lots. The zero had to have 2 or 3 moa difference too.

Buy large lots if possible, I also blend them if different. Then once dialed in I am done. The beauty is if the temp is 40 degrees different you will still be on. Not like some powders I will not mention. Just ask Gary about his experience with the temp sensitive powders and his 100 fps swings.

Jeff

 

[Mabia]

The photo is a 5 shot group I shot yesterday at 200 yards. If the velocity had gone up that much there should have been a rise in the 200 yard zero.

I will check the drops again this afternoon.

 

[Mabia]

Jeff,

Gary was spotting for me when the rounds went high. It took several shots to get the rifle on the gong. After we adjusted the scope I had several hits. I tried a round from a previous batch and it hit extremely low. There were no pressure signs with the fast loads.

91.5 gr H1000
300 gr Berger OTM
CCI 250 Primer
New Remington Brass

Rifle Specs
338 Edge
30" Bartlien Barrel
Stiller Action
Nighnforce ATACR Scope
Jewell Trigger
140 Whidden Composite Stock

I weigh every powder charge with a beam scale.

I even have a dedicated press set up to seat bullets for my 338 Edge. The dies are never removed to keep bullet seating depth uniform. I check base to ogive length every 5 rounds.

I run all my brass though an RCBS case prep center after re-sizing. All brass is then cleaned in a sonic cleaner, rinsed with warm soapy water and left to dry for a couple of days before I load them.

I don't think I could get much variation in my loading technique.

I have not weighed the individual cases, they were all purchased at the same time in bulk. I have not tried the

I am not the best shot out there but I strive to have the rifle and ammo perform better than I do.

 

[rick523]

The photo is a 5 shot group I shot yesterday at 200 yards. If the velocity had gone up that much there should have been a rise in the 200 yard zero.

I will check the drops again this afternoon.

Mabia,is the shot to the right a cold bore shot? Just curious, as the other 4 are right there. Good shooting BTW!!

 

[Mabia]

I threw the last shot

 

[rick523]

It happens.......

 

[Mabia]

I purchased a Magneto Speed to test the difference in the powder lots. Should I adjust powder loads to keep the same muzzle velocity or adjust the scope to compensate for for the difference?

My current load is 3 MOA lower than my buddy's 338 Edge shooting Retumbo. I would like to get the speed up to close to his velocity but don't want to trash brass.

Randy

 

[redneckclimbing]

Mabia-

Who cares about velocity, my friend and I are shooting the exact same 7mm 180gr. Bergers. Only his is coming out of a 7RUM at around 3200 fps and mine are out a Short Action wildcat @2925fps.

We went out shooting a couple of weekends ago. On the same day hes shot a 7.5" group at 602yds. and I shot a 3" group at 895yds.! Which would you rather have?

Load for accuracy and forget the velocity!