What is the best twist rate to specifiy if I plan mostly shooting 53-62 grn bullets

1 in 8" twist is extremely flexable and is my favorite.

Do yourself a favor, Just buy a CZ 527 Varminter. Mine w/ everything including bipod was $863.00. What a tack driver!! The trigger is amazing. They come w/ a 1:9. 50..70gr bullets are game. I shoot 55.. 65gr out of mine. Outstanding!!

I have Ruger Ranch Rifle that is worthless since it shoots "improved cylinder" and I wouldn't sell it to anybody so I am going to have it accurized...

If you want it accurized, check over at Shooters Forum. The Owner Marshall Stanton has lots of experience accurizing them. Hell of a nice guy!

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What is the best twist rate to specifiy if I plan mostly shooting 53-62 grn bullets

interesting replies....for me the twist would be 1-12"

One in nine should work. It is better to have too fast a twist than not enough.

I would be sure and use a Mini 14 expert gunsmith.

I've never been afraid to spin a bullet. Fast twist barrels are just a lot more versatile than slow ones. A 1 in 8" twist will do 50gr up to most brands of 75gr bullets. A 1 in 9" would be my 2nd choice. All 3 of my .223's wear a 1 in 8" and do very well.

Terry

1:8 or 1:7 is the way to go. Those fast twists will shoot the heavies out to 600 yards and put all but the very lightest, lightly constructed bullets below 50 gns into one tiny hole at 100 yds. I shoot highpower and have shot 223's from 1:7 to 1:12 and am talking from experience, not hearsay. A 52 gn Sierra Matchking loaded with 748 or H335 is very accurate in a 1:7. The very light varmint bullets below 50 gns will disentegrate enroute to the target, but quality bullets will hold up just fine.

ETA: Since you are building I will add this: Go with a 1:7 or 1:8 twist 20" barrel in a light to medium sporter contour and have it chambered with a plain 223 reamer as made for a 55 gn bullet. I have one with a 20" stainless Douglas #1 in 8 twist chambered like that. The short throat allows good accuracy with the 65 and 69 gn bullets seated to magazine length. I can't shoot 80 gn SMK's with that throat but shoot 65 gn Gamekings and 69 gn Matchkings just fine at magazine length. 77 gn SMK's are supposed to be good @ magazine length as well, but never tried any.

ETA 2: The 62 gn FMJSCBT SS109 bullets as in military M855 will need the 1:7 as they have that lighter steel core. I wouldn't use those as anything but plinkers or in an AR for home defense purposes. I wouldn't build a bolt gun to the specs to justify their use, but that is me. They aren't all that accurate anyway.