.22/250 loads

[brad]

guys a generous forum member has given me a handful of sierra .224 63gn sp and speer .224 70gn sp's to try before i buy !

anyone have any loads for heavyer projectiels in 22/250, hopefully the'll stabilise ?

[paz]

Mate I've used the sierra's in my 250, still got some loaded now, i used 2209 but I'm not sure on weight until i get home and check my load log. As far as stabilize, i don't think mine did from memory, though i didn't really play with them much.

Paz

[Klicker]

Brad, what's your barrel twist rate? do you know?

Mines 1:12 and 60gr is about its limit, but stabilisation is as much about the length of the projectile as it is the weight, they both have a significant impact.

also I have a very nice little spreadsheet for calculating this, drop me a PM and I'll see if I can email you a copy, it takes into account weight, speed, twist rate and bullet length and gives you a stability calc, so far everything it said would be good in my 250 has been good and what its calculated as bad has been so, its seams very accurate.

[300RUM]

For that bullet stability program try this link......... not sure if it will work.
Its an excel file you need to download, not big.

http://members.shaw.ca/cronhelm/files/B ... ulator.zip

[300RUM]

Forgot to add you need a stability factor of at least 1.3 for supersonic loads. The factor is 2 for subsonic loads. It is very accurate in my experience

[7mmmag]

Brad,

I used to use the 63gr Sierras in my 22-250 when hunting pigs, i was using 32.5gr of BM2 powder for a velocity of 3475fps. They grouped 5 under an inch and performed real well on the pigs.