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60 gr Nosler
wanted man
Member Posts: 3,276
Partition shot for crap........
I don't have the specifics of the load yet, but why WOULDN'T a 60 gr partition shoot decently out of a Rem SPS, 22-250(AI)? I believe the barrel is a 14" twist, and I KNOW it's a factory heavy barrel, 22"-24" long
The guy who worked up the loads is an experienced reloader, both in general and specific to the 22-250, so among other things I expect that he used powders appropriate to the 22-250 (H-380, etc)
From what I understand, only 2 shots of one particular 3-shot group were even on paper @ 100 yds!
Edit: Throat erosion can be ruled out, as the AI converted barrel has 50 rounds through it...
I won't be able to speak with him, or gather any further info 'til Saturday at the earliest, but based on comments I'm leaning towards insufficient barrel twist more than ever.....
I know this isn't much info to go on, but I wanted to get some input to apply to what I learn about the specifics
Thanks in advance for your input!
~Z
I don't have the specifics of the load yet, but why WOULDN'T a 60 gr partition shoot decently out of a Rem SPS, 22-250(AI)? I believe the barrel is a 14" twist, and I KNOW it's a factory heavy barrel, 22"-24" long
The guy who worked up the loads is an experienced reloader, both in general and specific to the 22-250, so among other things I expect that he used powders appropriate to the 22-250 (H-380, etc)
From what I understand, only 2 shots of one particular 3-shot group were even on paper @ 100 yds!
Edit: Throat erosion can be ruled out, as the AI converted barrel has 50 rounds through it...
I won't be able to speak with him, or gather any further info 'til Saturday at the earliest, but based on comments I'm leaning towards insufficient barrel twist more than ever.....
I know this isn't much info to go on, but I wanted to get some input to apply to what I learn about the specifics
Thanks in advance for your input!
~Z
Comments
The box of Barnes 55 TTSX solid copper says recommended for 1-10 or faster.
As mentioned, a 22/250AI might already have throat erosion. Maybe try seating further out/closer to the rifling if mag length allows. We had a .223 that had the throat so worn the only bullet it would shoot well was the 70 grain Speer(?)seated as long as the mag would allow(about .2" or so over max)
You need a faster twist. I tried the in a Remington 223, 1-12 twist and they shot like crap.
Not necessarily....I have a 22" 1-14 twist barreled Savage 110 that shoots 60gr partitions into about 1" at 200 yards.
Wanted man is talking about a 22-250 AI, not the .223. As you know, there can be several hundred fps difference at the muzzle between those two chamberings. My load (using Hodgdon Superperformance) is on the low end and is clocked at 3360 fps. I also had a load using W760 that was almost as good, but I never did chronograph it. My best estimate is about 3350 fps.
My best guess would be that he may not have generated enough speed to get the 1-14 twist to stabilize it yet. Either that or your rifle just does not like them.