It may have been covered before but is anyone using this combo with the 75 AMax? If so would you mind sharing any info? I know most use H4350 and a few more but just interested in this specific powder. Will be shot out of a savage with a 1-7 Mcgowen in fire formed lapua brass. Mostly looking for loads and starting points. I figured I could probably use 220 swift data and start low. Anyways, thanks in advance.
22-250AI and H-1000
- Thread starter L1986
- Start date
My 2 barrels liked 44.5 grains in Win brass with a CCI primer. I experimented with magnum primers, but found them unnecessary. Velocity was 3275 to 3300 out of a 26 inch barrel. Accuracy was exceptional. Very low sd and very little vertical. It would be wise to start much lower and work up. Case life was excellent for me, but you know how it goes.
I have wondered about H-1000 my self, as I have a McGowan barreled 1-8 twist 22-250 AI, Savage. I always hear the talk about H-4350, RL-22, & H-4831sc. It seems that H-1000 is close to these other powders' burn rate. Anyone else have experience with H-1000 & the heavier bullets (75-80 grainers)? Thanks in advance, Idaho-45
I can understand H1000 seeming like a mismatch for the 22-250 AI, but I managed to take 3rd place in the 22 cal open class with it at the VHA jamboree in 2010 shooting my tac/varmint rifle against full tilt bench guns. Got beat by a pair of 22BR's shooting 90 grain Sierras.
Killed a pair of prairie dogs back to back at 725 yds with the same rifle using Ramshot Magnum, which is a smidge slower burning than H1000.
I could get more speed out of H4350, but the 2 8twist 22-250 AI barrels I used up both shot their best with H1000 and Ramshot Magnum. A pair of barrels probably isn't enough to draw meaningful conclusions, but it does make me think there might be something to it.
Never had any luck getting those 2 powders to perform in the standard 22-250 case, though.
Killed a pair of prairie dogs back to back at 725 yds with the same rifle using Ramshot Magnum, which is a smidge slower burning than H1000.
I could get more speed out of H4350, but the 2 8twist 22-250 AI barrels I used up both shot their best with H1000 and Ramshot Magnum. A pair of barrels probably isn't enough to draw meaningful conclusions, but it does make me think there might be something to it.
Never had any luck getting those 2 powders to perform in the standard 22-250 case, though.
Mine isn't an AI but RE-23 works great with both 80 and 90 SMK's. Using 36.5 gr giving me 3080 with the 90's. Could go faster but this is a very accurate load for me. There is very little room left in the case with this load. H-1000 should fill the case.
Here are a few groups I shot a week or two ago out of my latest 22-250 AI barrel with H1000. This was leftover ammo from testing in my 2 previous barrels.
Top and bottom were 44.8 grains with a standard CCI primer.
Two in the center are 43.5 with a CCI magnum primer. I've since given up on the magnum primers.
All Win brass and 75 grain Amax.
I do all of my shooting off an Atlas with a cylindrical rear bag.
Took the 44.8 grain load out to 400 yesterday and it looked to have less than 1/4 moa vertical. Didn't walk out to my plate to get a group measurement as the snow is a bit deep at the moment. Looked to be 4 rounds a bit under an inch with a 5th out to the left 1/2 of an inch or so.
Top and bottom were 44.8 grains with a standard CCI primer.
Two in the center are 43.5 with a CCI magnum primer. I've since given up on the magnum primers.
All Win brass and 75 grain Amax.
I do all of my shooting off an Atlas with a cylindrical rear bag.
Took the 44.8 grain load out to 400 yesterday and it looked to have less than 1/4 moa vertical. Didn't walk out to my plate to get a group measurement as the snow is a bit deep at the moment. Looked to be 4 rounds a bit under an inch with a 5th out to the left 1/2 of an inch or so.
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my human host, Sir, what twist & length is your 22-250 AI barrel? I couldn't seem to get the 75 A-Max to do very well in my McGowan 1-8 twist 22-250AI. I've had mediocre luck with H4350 & Nosler 80 grn. Custom Comps, But I'd love to get the A-Maxes to shoot better!!!! Thanks for any input, Idaho-45
The barrel that shot the groups above is only 18 inches long. I've tried subtle variations of the 44.8 grain load in both 24 and 26 inch barrels and it has done well in those lengths, too. All barrels have been 8 twist. 2 Shilens and one Krieger.
my 22-250AI uses 75 amax, win brass, cci250,44.5-RL17. Broughton 26 in 5R 10 twist. Clocks an honest 3750 fps. Also, did shoot 1/2 inch @ 100. Now has just under 1200 rounds and I'm afraid to say is preeety much used up. This gun was throated to have the base of the bullet at the neck/shoulder junction and the tip just on the lands. Ymmv
Phil
Gold $$ Contributor
Ran this on QL, and it does look impressive!
However, that load is runnin' in the >83,000 psi range to throttle a 75Amax to 3750fps...
Surely, the slower than normal twist and long throat might mitigate that outrageous pressure, but to what degree?
How long does your brass hold up? Assuming it's Lapua???
RL-17 is a crazy fast powder. I'm presently building a hotrod .224 specifically around using RL-17. Hoping for the same outrageous performance, albeit at a more reasonable case pressure...
I agree sounds a little far fetched to me.Ran this on QL, and it does look impressive!
However, that load is runnin' in the >83,000 psi range to throttle a 75Amax to 3750fps...
Surely, the slower than normal twist and long throat might mitigate that outrageous pressure, but to what degree?
How long does your brass hold up? Assuming it's Lapua???
RL-17 is a crazy fast powder. I'm presently building a hotrod .224 specifically around using RL-17. Hoping for the same outrageous performance, albeit at a more reasonable case pressure...
Glad that load works for you but I gotta agree that it sounds mighty salty.
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