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RRA NM ar is more than a 16" toy I own two RRA national match AR's and they will shoot 10 shot 100yd groups of .400. Not benchrest quality but not your average black gun either. I use them at local iron sight benchrest shoots and they have been very successful. Those .400 groups were achieved...

High BC bullets require a 1 in 8" or 8.5" twist for either selection Most people on this site know that both Creedmoors have the same ballistics as the .260 Remington (6.5mm) or the .243 Win/6mm Remington (6.0mm) with longer throats for the high BC bullets. That said, the the 140's for the 6.5...

Link to 6mm AI load data I owned a R700 varmint in 6mm AI in the 80's and 90's with 9.25 twist, very accurate with heavy bullets and very slow powders for the day. Here is a very good link to many loads for the 95gr and up bullets. Use 6mm data as starter loads and go up slowly...

135 smk I had no pressure signs, but we all know to start low and work your way up. My 30brs (both 17's @ 24") are sensitive to 1/10th grain increments. The load you describe about keyholes at 600yds probably means the velocity has dropped below the stability threshold. Bullet length is 1.071...

30br at 550yds Our club had an informal sniper shoot at 550yds that I had some success using 135 smks over 31.7 Re7, Krieger lv 17 twist barrel on trued Rem700. Same load with H4198 also was very good. Load vel. at 2824. Rich

Nosler factory load data https://load-data.nosler.com/load-data/22-nosler/ see tabs for each bullet Max loads are probably for bolt guns, not ar15's

Why go to .the 22 nosler? All the data I've seen on this cartridge indicates it has almost the same velocity and accuracy with similar bullet weights as the .223/5.56 with an 8 twist barrel.

Several more things to consider The best shooters at your club can recommend front and rear bag options as they are just as important as the rifle and bullet selection. You will need a 36x scope to see bullet strikes at 200 yds on the small goundhog targets without having to buy an expensive...

Are you limiting twist rate because of torgue I have two 30br rem 700 with 1-17 twist Krieger and Brux barrels. They both shoot well but are limited to bullets that are 1.08 inches long (135 SrMkg). I don't think you should limit a .308 to that twist, so your gunsmith is correct and shoot the...

1974 Sako vixen in original barrel was very powder/load sensitive I own a post 1973 HB vixen purchased in 1974 which would only shoot RL-7 with either sierra 52 or 53 Mkgs or 40 bergers (later years) under 1/2 moa. I mention the year because Garcia bought out Sako then and I believe changed the...

Hornady link for MOA rise From a 100 yd zero the scope will be near the bottom of the vertical range. Plug in BC and velocity and the left side of chart will show MOA rise from zero. Typical for 3000 fps and .590 BC would be an 11" rise at 600 yds. You can add wind drift also...

Lilja site info for .22wmr dropin barrel Lilja site: (Our .22 rimfire barrels are available in four different twist rates: 9", 15", 16", and 17". The 9" twist is available as a 3-groove only, the 15" as a 6-groove only, the 16" as either a 3, 4 or 6-groove and the 17" as a 4-groove only...

.040 freebore The drawing shows a .040 lead or freebore. Bullets less than 1.1" long will stabilize in a 1-17 twist barrel. .010 is the step down from the .330 neck to the freebore diameter at a 45 degree angle. Sierra 135 matchkings will work at 1.07" long.

Depends on the bullet length you intend to shoot I have 2 .30brs that I use in local matchs. A 17 LV Krieger and a sporter 17 Brux. Both will stabilize bullets up to 1.1" long, but no more than that. If custom bullets are hard to get where you are some Bergers, Speers, and Sierras work very...

.308 win loads reccommended from AccurateShooter.com web site Powder Grains Primer Bullet Brass Velocity Comments Hodg Varget 47.5 F210m Sierra 110 Varmint Win 3200 fps Very Accurate Varmint Load, 2.650" COAL Reloader 15 47.0 F210m Hornady 110...

.140 Bc is just an average of many bullet styles These are from the firearms forum. (.22 LONG RIFLE, Standard Vel. & Match Ammo--24-in. barrel, 1 turn in 16-inch twist) SWARTKLIP, 13-gr. LR SDP Subsonic Diabolo Pellet (SK006), 480 MV, 7 ME ? BC---(BC & rate of twist to be verified...

Hornady has a quick ballistic calculator http://www.hornady.com/ballistics-resource/ballistics-calculator Use 25yd increments, set max yardage for 225 with a 100yd zero, .140 G1 BC and vel at 1060 or 1073 depending on ammo. After calculation look at 1st column for MOA rise at 225yds. You will...

Center x here http://www.champchoice.com/detail.aspx?ID=3502 midas + is better

I built a 77/22 for my grandson. Stoned the existing trigger and it breaks a 2 lbs. I put a 16" muzzle heavy Volquartsen barrel and stock on it. Shoots .750 five shot groups at 100 yds with Lapua Midas+. about 1" with eley black box. Is your barrel free floated? I found it shot much better...

The sierra 125 OTM is 1.153 inches long. It may work with a 17 twist but an 18 probably won't stabilize it.