22-250 speed

[dryfarmer]

how fast should I be pushing the bullets down the barrel, is 4000 going to wear out my barrel

[sewwhat89]

I shot 52 gr AMAX and SMKs at 4074 fps in a 26" barrel. I managed to get 55 gr pills out at 3974 fps. After 286 of the 52 gr bullets and 100 of the 55 gr bullets, the groups went from about .3-.4 range to .8-1" range. In light of that, I would not do that again. I had the same accuracy with 3600 fps, but shooting at 4000 just seemed cooler. Its so cool to burn out barrels quickly [img]/ubbthreads/images/graemlins/crazy.gif[/img]

[remingtonman_25_06]

Would you mind sharing what powder you used to achieve those velocities? Thats pretty dang close to 220 swift speeds. My dad has a ruger target in 22-250 and right now were using IMR-4895 w/40g btips at 4000fps. He wants to find a load with bigger bullet. He found out that 40g dont buck the wind to well...

[Iron Worker]

He's not shooting a standart 22-250! Its an improved version. [img]/ubbthreads/images/graemlins/smirk.gif[/img]

[sewwhat89]

Its not an 22-250 AI. Its standard. I was shooting 39gr H380 with the 52 SMKs, and I think 37.5 or 38 gr Varget with the 52 AMAX seated 0.005" into the lands. Well, when I started they were into the lands, now I cannot seat a 55 gr Berger to even reach the lands. Cases lasted about 3 firings with neck sizing only. Primer pockets are gone after that.

[remingtonman_25_06]

I dont see anywhere about anything being an AI in the previous 2 posters. Thats why I asked. If it was an AI, I could see those velocities being achieved quite easily. I'm just curious is all.

Thanks sewwhat89

[dryfarmer]

so your telling me 4000fps and the barrel is shoot in 3-4 days pd shooting( 400 shots) so what is a safe speed, I can't afford replacing barrels every couple weeks