H1000 and 215 berger

[Dell]

Looking for info on h1000 and 215 Bergers. Has anyone else had issues with accuracy. Rifle is a r700 with a bartlein barrel. I ran 74-77 gr. With cci250. Best group was where to be expected 77 gr shot around .8 moa. Other groups where 1.25-1.75. I shot some h4831sc and it shot a .6" 4 shot group at 72 gr. This was just a random load. Im looking for others that have experienced less then optimal accuracy with H1000. What powder did you turn too? I'm afraid H4831sc might just not get the velocity I want. Also this is a hunting rifle so temp stability is fairly important. One other question. This particular jug of h1000 had been in my garage for about a year heating up and cooling down. Not sure if it's worth trying a fresh lot of powder. Any insight would be great.

IMR 7828 SSC .50 MOA in my 300 RUM. 190 Berger. Not sure on the 300 WM but I'd bet it would work better than what you are experiencing with H1000.

 

[Jrainey]

My 24" Remington 700 Milspec shot .5MOA with the Berger 215's using 76gr H1000/Fed215M but velocity was low at 2840FPS. Switched to 79gr Retumbo and improved velocity to 2900FPS with sub.5MOA groups. I seated the 215 at .020" off the lands.

If I remember correctly, I am at 2930 FPS with 77. 5 grains of h-1000 and rem 9 1/2 primers with Es of 14. That's Remington brass as well.
Factory Remington long range with 26 " barrel

 

[tgeavenson]

Retumbo

 

[Hiking300ultra]

Looking for info on h1000 and 215 Bergers. Has anyone else had issues with accuracy. Rifle is a r700 with a bartlein barrel. I ran 74-77 gr. With cci250. Best group was where to be expected 77 gr shot around .8 moa. Other groups where 1.25-1.75. I shot some h4831sc and it shot a .6" 4 shot group at 72 gr. This was just a random load. Im looking for others that have experienced less then optimal accuracy with H1000. What powder did you turn too? I'm afraid H4831sc might just not get the velocity I want. Also this is a hunting rifle so temp stability is fairly important. One other question. This particular jug of h1000 had been in my garage for about a year heating up and cooling down. Not sure if it's worth trying a fresh lot of powder. Any insight would be great.[/QUOTe
In my 7rum we were using 100grain of h1000 and 125 barnes x bullets. Have shot bears out to 700 yards.

 

[Rick Richard]

No issues with two 1and 10 twist with H1000 and Berger 215 through a Bartlein 26 inch barrels.

 

[Shane Lindsey]

Not sure if it was mentioned, but maybe try a mild load at .010" off the lands. This may require single feeding, but may show you if it is worth going any further.

Both mine liked 77gr H1000 at .060" off the lands. Norma case, CCI 250.

Rem was able to fit in the box,Ruger did not.

FWIW-200.20x out of a 308 Win needed to be jammed in order to shoot.

 

[CaptMarvL]

Looking for info on h1000 and 215 Bergers. Has anyone else had issues with accuracy. Rifle is a r700 with a bartlein barrel. I ran 74-77 gr. With cci250. Best group was where to be expected 77 gr shot around .8 moa. Other groups where 1.25-1.75. I shot some h4831sc and it shot a .6" 4 shot group at 72 gr. This was just a random load. Im looking for others that have experienced less then optimal accuracy with H1000. What powder did you turn too? I'm afraid H4831sc might just not get the velocity I want. Also this is a hunting rifle so temp stability is fairly important. One other question. This particular jug of h1000 had been in my garage for about a year heating up and cooling down. Not sure if it's worth trying a fresh lot of powder. Any insight would be great.

I have had a similar occurance and found that Federal 215M primers tightened up my group. You should try adjusting your jump for a little improvement as well.

 

[Gcan]

Looking for info on h1000 and 215 Bergers. Has anyone else had issues with accuracy. Rifle is a r700 with a bartlein barrel. I ran 74-77 gr. With cci250. Best group was where to be expected 77 gr shot around .8 moa. Other groups where 1.25-1.75. I shot some h4831sc and it shot a .6" 4 shot group at 72 gr. This was just a random load. Im looking for others that have experienced less then optimal accuracy with H1000. What powder did you turn too? I'm afraid H4831sc might just not get the velocity I want. Also this is a hunting rifle so temp stability is fairly important. One other question. This particular jug of h1000 had been in my garage for about a year heating up and cooling down. Not sure if it's worth trying a fresh lot of powder. Any insight would be great.

300RUM

I'm not sure what cartridge you are loading. Sounds like 300WM?
I shoot 90 grains H1000 under 215 Bergers with no pressure signs. 5 shots .200" @ 100. Gun holds -1/4 MOA. 3183 fps. 28" at any distance if I do my part.

I'm never used H1000 in any of my 300Win Mags. Couldn't get it to work in small case. I find it like long barrels.
Am using H4350 and H1000 in a 260 rem 29" 5r panda and a Ruger Precision 260 28.5" 5r by Southern. Both Bartleins. Both shoot H1000 well from long sticks. 140 BERGER Hybrids at 2950 with zero pressure. (LabRadar)

I'm curious what kind of deviation/ extreme spreads you are getting.

 

[TBell]

Looking for info on h1000 and 215 Bergers. Has anyone else had issues with accuracy. Rifle is a r700 with a bartlein barrel. I ran 74-77 gr. With cci250. Best group was where to be expected 77 gr shot around .8 moa. Other groups where 1.25-1.75. I shot some h4831sc and it shot a .6" 4 shot group at 72 gr. This was just a random load. Im looking for others that have experienced less then optimal accuracy with H1000. What powder did you turn too? I'm afraid H4831sc might just not get the velocity I want. Also this is a hunting rifle so temp stability is fairly important. One other question. This particular jug of h1000 had been in my garage for about a year heating up and cooling down. Not sure if it's worth trying a fresh lot of powder. Any insight would be great.

I do a 77 gr H1000 with the 208 gr A max originally and the new 208gr ELD out of a 300WM and both are giving me between 3/8 -1/2 MOA groups out to 600 yards.

 

[Lee Goodwin]

Here is some load data posted by Nosler, where they use different powders and various weight bullets. Note the asterisks that denote most accurate load in that powder to bullet combo. I am using IMR 7828 SSC.

https://load-data.nosler.com/load-data/300-winchester-magnum/

 

[Lee Goodwin]

I was wondering if out of your groups of shots, which shots were the "flyers".? Seems like, for me, if I go heavy projectile for twist and, or caliber, the first shot is a bit off then the rest clover leaf....and I don't know why...?

 

[Vol1975]

Can you explain the cases rechecked on bullet interference?

Bullet interference. Sorry machinist talk. Other words it is Bullet case mouth pinch that the case has to bullet. A common term that is used is interference. Some people run .001 to .003 Ths. Most factory resizing dies run .001 ths but in today market u can put as much as you want on a bullet by what die you have. Most of my pinch is .002 with bullet runout less than .001ths.
Depending on what die you use and whether the case is resized from the inside or outside their can be some difference with the oddball case thickness of brass. Hell I've seen when anealing brass and some are not anneled correct and the brass has a different bite on the bullet. Ever feel when u load a bullet that 8 out of 10 feel the same and then those two feel a lot different. Either easier or harder. Mark those and then watch the chrono.
Lord OCD is taken hold.
Hope this helps

 

[Okanogan]

I have two 300 WMs both built by GAP. They both like 215s but prefer different seating depths and velocities. For the lighter #3 contour, I had to slow the loads down below 2800 fps to get it to group well (at -0.035 jump). These were 74.5-75.1 gr H1000.
The heavier #6 contour shot well above 2840 fps (at -0.075 jump). These were 76.2-76.5 g H1000 which is where I got the best ES/SD for this rifle.
If your 4831 loads that shot well are significantly slower than your heavy H1000 loads then you might try backing off your H1000 load until you get in a similar velocity range and see if that produces good results.
I have been through hundreds of rounds with the two rifles. I found that using RL26 and achieving similar velocities to a H1000 load gave me similar accuracy results. I also found that H1000 and F215Ms seem to work well together as did RL26 and CCI 250 primers. (meaning they gave me the best ES/SD results when paired up)

 

[7mmShooter]

What Vol1975 is referring to is commonly known as neck tension