22-250 load

[klemm]

Looking for a powder and min/max loads for a 22-250. I will be running cci br2 primers or gm210m. Barrel is 28". The only powder I have on hand is varget, H1000 and retumbo. And I know the last 2 will not work. I am trying to work up a load for 80gr SMKs. I do not have any info in my reloading manual. Thanks for the help.

 

[Sully2]

The 80 gr loads I have in my manuals dont list usage of any of your 3 powders!

I sure hope you got the proper rifling twist for that size of slug!

 

[DocDoc]

Klemm,
Berger lists IMR 27.5 start 30.8 max for 80/80.5 gr
IMR 4320 28.5 start 31.7 max
H4350 31.0 start 34.5 max
RL-19 32.5 start 36.1 max

No H1000 for any weight in this caliber.

 

[klemm]

Twist of barrel is 1:7.
I was looking for a powder that was not temperature sensitive.
Is reloader 19 good for big temperature swings?

 

[DocDoc]

To-19 is known to be temperature sensitive. H4350 would be good, if you can find it, and it works well with bullet, barrel, and primer.

 

[klemm]

Just out of curiosity, on the Hodgdon powders website, they are listing a load for Varget and H 1000.For a 70 grain bullet Am I missing something?

 

[klemm]

I will look for some H 4350. Thanks.

 

[Sully2]

Just out of curiosity, on the Hodgdon powders website, they are listing a load for Varget and H 1000.For a 70 grain bullet Am I missing something?

It isnt printed in their manuals

 

[klemm]

It was on there website.

 

[Thomas B.]

From Sierra reloading manual



DICATES MAXIMUM LOAD – USE CAUTION
LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED.
RELOADING MANUAL • 5TH EDITION
2B2u-l2le5t 0N Ramemeington continued
#1380 .224" 69 gr. HPBT MatchKing
C.O.A.L 2.350"
*requires 1 x 9"-10" twist barrel
Powder /Velocity 3000 3050 3100 3150 3200 3250
AA-2015 28.5 29.0 29.6 30.1
Varget 30.7 31.2 31.7 32.2 32.7
IMR-4064 29.9 30.5 31.1 31.7 32.3 32.9
AA-2520 31.2 31.7 32.1 32.5
Viht N540 31.0 31.5 32.0 32.5 33.0 33.5
BigGame 32.5 33.1 33.7 34.3 34.9 35.5
RE-15 30.6 31.2 31.8 32.4
760 34.7 35.7
H414 34.7 35.2 35.8 36.3 36.8
Viht N550 32.8 33.3 33.8 34.3 34.8 35.3
IMR-4350 34.8 35.3 35.7 36.2
Viht N560 37.2 37.7 38.2 38.7
H450 37.2 37.8 38.5 39.1 39.7
Energy/ft.lbs. 1379 1425 1472 1520 1569 1618
Powder Grains Velocity Ft. lbs.
Accuracy Load IMR-4350 36.2 3150 1520
Sierra does not recommend MatchKing bullets for hunting applications.
#9390 .224" 80 gr. HPBT MatchKing
C.O.A.L 2.600"
*requires 1 x 7"-8" twist barrel
Powder /Velocity 2700 2750 2800 2850 2900 2950 3000 3050
H414 31.5 32.2 32.9 33.6 34.2 34.9 35.6
AA-4350 32.6 33.2 33.7 34.3 34.9 35.4 36.0
IMR-4350 32.1 32.7 33.3 33.8 34.4 35.0 35.6
H4350 33.0 33.5 34.0 34.5 35.0 35.5 36.0 36.5
RE-19 33.1 33.7 34.4 35.0 35.6 36.2 36.9 37.5
Viht N160 30.9 31.5 32.1 32.7 33.3 33.9 34.5
IMR-4831 33.6 34.0 34.4 34.9 35.3 35.7 36.1 36.6
AA-3100 34.7 35.4 36.0 36.6 37.2 37.8
H4831 SC 34.1 34.7 35.3 35.9 36.5 37.1 37.7
RE-22 34.4 35.1 35.7 36.4 37.0 37.7 38.4
Energy/ft.lbs. 1295 1343 1393 1443 1494 1546 1599 1653

 

[klemm]

Thank you very much

 

[65WSM]

These "helpers" are stuck on single base WWII powders. Reloader 17 is what I use in my .22-6.5X47 Lapua. Reloader 17 is a new formula powder (beyond double base technology) that is produced by NitroCheme in Switzerland. It has more energy, ignites easier and is less temperature sensitive than what we loaded .50 BMG with during the war. My rifle has a touch more volume than the .22-250 Remington but uses small primers. I shoot 80 gr MKs at 550yds (the end of our range). My 80 gr Sierras go at 3200 fps. I can push them to 3400 with a few more grains of R-17 and still not have the primers fall out but I would have to size the case bodies. At 3200 I can get by with my Wilson sizing half of the neck.

Hunter is a Belgian double base ball powder with a similar burn rate.

Incidently, I have tried the Sierra 77 gr tipped MKs and I am convinced the tips melt and give them inconsistent accuracy and less velocity at the distance I shoot. The 75 gr PRI Serbian bullet is also accurate with R-17 in my rifle and it costs 16 cents. All of my bullets are HBN coatted and my barrel has been nitrocarburized to last longer. I also trim the tips with the Montour County Rifles tool. That is why I wanted the tipped Sierras (I bought a thousand) to work but no cigar. I have not been pleased with the Hornady 75 A-Max but I am not similarly invested.