Yes. 55 grain. In fact 1:12 was the old barrel twist in the M-16A1 before the introduction of the M-16A2 with its 1:7 barrel twist. The 62 grain bullet was/is used primarily in the latter rifle.
I thought the SPS Varmints were a 1:10 twist. not sure tho, i'd have to check. anyway my best accuracy with mine in .223 has been with 52 gr. Hornady A-Max bullets and 55 gr V-Max so far. I want to try some 62 gr. just to see how they will compare. testing still in progress.
I thought the SPS Varmints were a 1:10 twist. not sure tho, i'd have to check. anyway my best accuracy with mine in .223 has been with 52 gr. Hornady A-Max bullets and 55 gr V-Max so far. I want to try some 62 gr. just to see how they will compare. testing still in progress.
I thought they were either 1in10 or 1 in 9, but I checked the remington website and it said 1in 12. I was surprised because I thought that heavier 223 bullets were becoming more popular.
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the sps varmint is 1-12", and if you believe Ed Shilen, he says 55gr is the perfect bullet for that twist. my own sps varmint does very well with 50gr VMax's.
I have a rem 700 sps varmint in 223. The twist is 1 in 12. What bullet weight or weights would probably be the best for this rifle?
I just emailed Berger MFG about using a 73 gr bullet in my 22/250, 1 in 12 twist. The tech replied that that weight required a 1 in 9. below is his email:
Sir,
That particular bullet requires a 1:9” twist to stabilize. I’m not sure about the specific rifle you mentioned, but rifles chambered for .22-250 generally have slower twist rates like 1:12” and 1:14” for shooting the lighter bullets at high speeds. I can’t say for sure, but I doubt your .22-250 has a fast enough twist.
-Bryan
Bryan Litz
Ballistician
Berger Bullets
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Last edited by 15AcreWoods; 02-25-2009 at 12:59 PM.
