March 7th, 2021

Sunday GunDay: Half-Mile ‘Hog Rifle, John’s 6mm Rem AI

groundhog varmint rifle .243 6mm Rem Remington Ackley Improved AI

Spring varmint season is just around the corner. So here’s a very accurate Half-Mile ‘Hog rifle, that can drill a groundhog at long range. While just about any cartridge from a 22 magnum on up will do the job on a groundhog at close range, when you want to “reach out and touch” your prey at very long distance, it takes a case capable of tossing a heavier, wind-bucking projectile at ultra-high speeds. This week we feature a 6mm Remington Ackley Improved (6mm AI) belonging to our friend John Seibel, who ran the Varmints for Forum website for many years. John’s handsome BAT-actioned rifle sends the 87gr V-Max at a blistering 3675 fps. With its 1/4-MOA accuracy and flat-shooting ballistics, this gun is a varmint’s worst nightmare, a rig that regularly nails groundhogs at a half-mile (880 yards) and beyond.

Quarter-MOA Accuracy For Long-Distance Varminting

GunDay Report by John Seibel
John reports: “So far this gun has been an awesome long-distance varmint rig, with enough velocity to smack those critters hard at 800 yards and beyond. I have some more testing to do, but it seems that the 87gr V-Max (molyed) pushed by 52 grains of N160 or 51.5 grains of RL-19 shoots very well indeed. Velocity runs around 3675 fps. I shot consistent 1″ groups at 500 yards with both of these loads. Warning: These are max loads that work in my rifle, so start at least 10% lower and work up.

500yd SteelMy fire-forming procedure is just jam and shoot. I start with a powder (such as H414) that works for the parent case, fire a few cases as I work up the load to where I get a well-formed case, then shoot them at varmints. Then I work my load up with the newly-formed cases over a chrono. If a load looks good at 100 yards, I will go straight for 200 yards. I’ve seen that some loads which grouped well at 100 won’t shoot well at 200. If it is consistent at 200, then I’ll shoot it a steel plate at 500 yards. Then the truth will be told.

Man I love that BAT action! I have tried some Berger 88gr Lo-Drag bullets as well. They have the same BC as the V-Maxs but offer excellent accuracy. The action is BAT’s Model B round action configured Right Bolt, Left Port, with a fluted .308-faced bolt. The port is 3.0 inches wide — perfect for the 6mm Rem Improved cartridge’s OAL. I use a NightForce 8-32x56mm NXS scope mounted to BAT’s 20-MOA aluminum Weaver-style base. I use Burris Signature Zee rings because they are self-aligning and easy on scope tubes, plus you have the option of adding more MOA if needed.

Krieger with Harrell Brake
The barrel is a stainless Krieger 1:12″ twist Heavy Varmint contour, finished at 26″. I installed a Harrell’s muzzle brake because I hate recoil and I like to be able to spot my hits when target shooting and hunting–especially hunting.

When hunting I am usually by myself so when I eyeball a varmint I want to see my shot flatten him … and I hardly ever miss (heh-heh). Make sure you have your earplugs in though — that muzzle brake is loud!

Easy-Steering Thumbhole Varminter
The stock is Richard’s Custom Rifles Model 005 Thumbhole Varminter. This is a big stock that rides the sand bags very well. Took me a while to get used to this stock as I had never shot a thumbhole before. It is very comfortable and easy to control when you are shooting a moving target. In fact, my first kill with this rifle was a coyote at a little over 200 yards, she was moving along at a slow clip and I had to give her the ole’ Texas heart shot before she disappeared over a hill! (It’s pretty rare for me to shoot moving varmints though — at long-range, I want my cross-hairs steady on the target.)

Regarding the stock selection, I like Richard Franklin’s stocks because they are well-suited to my kind of shooting. I prefer a stock that is flat most of the way back towards the action because when I’m shooting out of my truck window it has to balance around mid-point. Also his stocks seem to track very well on the bench. I guess the stocks I like the most are his Model 001 and Model 008 F-Class. [Editor’s note: John often shoots from the driver’s seat of his truck because he is partially paralyzed. He also has a hoist in his truck bed for his wheelchair. Even with his mobility challenges, John tags more varmints in a season than most of us ever will.]

6mmChoice of Caliber — A 6mm with More Punch for Long Distance
I picked the 6mm Rem Improved mainly because it has that long neck for holding long bullets and it doesn’t burn the throats out as fast as a .243 AI would. I don’t use Remington brass; it splits when fire-forming and seems to work-harden fast. Another reason I picked the 6mm Improved was what I saw in the field–it seemed to be a perfect long-range groundhog getter. I saw my stocker, Richard Franklin, flat smack groundhogs out to 900+ yards with regularity. The OAL of a 6mm Improved does make it hard to remove a loaded round from a standard Remington 700 action. That’s why I went with the BAT Model B, with its longer 3.0″ port. For a standard action, a .243 AI might function better.

As for the 6 Dasher, from what I have read, I think it is a fine round. I’m a hunter though and a lot of case-forming isn’t worth it to me. Forming the Ackleyized cases is bad enough. The 6-250 is a real screamer and very accurate but it doesn’t have the capacity to drive the heavier bullets as well as the 6mm Improved. I have tried a .243 WSSM, also with a Richard’s stock (#008) and a BAT action. It may not shoot as well as the 6mm Rem Improved, but I like those short fat cases.

John’s Views on the Great Moly Debate
Editor: John started with moly-coated bullets for this 6mm Rem AI rifle, but he has moved away from that. He does have considerable experience with coated bullets, and now, at least with custom, hand-lapped barrels, he normally uses uncoated bullets. He now favors coated bullets only for the small .17 caliber.

Moly or no moly… hmm? I have used moly and Danzac for several years, mainly Danzac. In my experience, both moly and Danzac can work well for somebody who shoots a lot of rounds before cleaning. A barrel has to be broken-in correctly whether you use moly or not. I have done break-in with naked bullets, using the conventional method of shooting and cleaning till the copper stops sticking. I have also gone through the break-in process using molyed bullets from the start. It seems to me the barrels broke-in more readily with moly bullets than with naked bullets. I think if there are any rough or sharp places in the barrel the slick molyed bullet doesn’t grab it as badly and the moly will “iron” the flaw out without leaving copper behind.

molybdenum danzac bullet collet moly varmint bullet

The main mistake I think most people make with moly is improper cleaning. By that I mean they don’t get the bore clean from the beginning. Some people will scoff at me for this but I use JB bore paste for most all my cleaning, hardly ever use a brush. Just JB and Montana Extreme or Butch’s Bore Shine. It works for me! Now shooting molyed bullets works fine to say 500 yards, but any further and you really need a lot of tension on the bullet. If not you will get bad flyers.

Personally, I use coated bullets only with .17 cal rounds now. I did use them initially in my 6mm Rem AI but I am starting to move away from that. With proper break-in, the fine custom barrels we have now will not copper if you clean correctly and don’t push those bullets too fast! And remember that powder-fouling build-up is an accuracy-killer too. That is another reason I use a lot of JB paste.

groundhog varmint rifle .243 6mm Rem Remington Ackley Improved AI
John lives and works on a farm in Virginia. Getting rid of intrusive varmints is part of the job of running the farm. Here is one of John’s bolt-action pistols, which is very handy when shooting from a vehicle.

The Guru of Varmints For Fun
For many years John Seibel ran the popular Varmints For Fun website (now offline). This site offered excellent advice for hunters and reloaders. John covered a wide variety of varmint chamberings, from big 6mm wildcats, to the popular 6BR, 22BR and .22-250 caliber varmint rounds, and even the micro-caliber wildcats such as the 20 Vartarg and 20 PPC. Shown below is one of his favorite rifles, a 20 PPC with a special short version of Richard Franklin’s Model 008 stock.

John tells us: “I guess one reason I started my web site is that I was getting a lot of inquiries about hunting groundhogs, custom rifles and reloading. Plus I thought it was a fine way to get young people interested in the shooting sports. Lord knows hunting and firearms aren’t taught any more. I get a lot of young hunters and shooters asking what’s the best caliber for hunting varmints, and they’ll ask for reloading help too. It’s a shame, but many of them have no one to teach them. I do my best to help.

Showing others that a person can still shoot, even with a disability, is another reason I started my web site. I am a C 6-7 Quadraplegic, which means I have no grip in my hands. Imagine shooting those 1.5 oz Jewels that way! I had a therapist tell me I wouldn’t be able to shoot or reload once I got out of the hospital…shows you how much he knows! First time I got home from the hospital it was deer season and I had Pops park me at the edge of some woods. Well I had a 7-point buck on the ground in thirty minutes! Being raised on a farm didn’t hurt none either–it helped me figger ways to jury-rig stuff. Of course I couldn’t have done much if it wasn’t for my family and my lovely wife Cathy[.]”

John’s Favorite 20 PPC Varmint Rifle

Cartridge History Lesson — the Original .244 Remington
Here’s bit of cartridge history. The 6mm Remington, parent of John’s 6mm AI, actually started its life with a different name, the “.244 Remington”. What we now know as the “6mm Remington” was originally called the .244 Remington. The cartridge was renamed because it was not a commercial success initially, being eclipsed by the .243 Winchester. The .244 Remington and the 6mm Remington are identical — only the name was changed.

6mm Remington cartridge .244 John Seibel varmint rifle

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March 7th, 2021

RCBS Chargemaster Lite — Three Product Review Videos

RCBS ChargeMaster Lite video reviews

Many thousands of hand-loaders, including this Editor, acquired the original RCBS ChargeMaster 1500 powder scale/dispenser. Mine has worked well for many years. Yes I do have to watch for scale drift, and I use a high-end Force-Restoration scale when loading for major matches, but the original ChargeMaster has served me well, throwing thousands of charges over the years.

RCBS ChargeMaster Lite Reviews

A few years ago, RCBS introduced a new version of the ChargeMaster, the RCBS Chargemaster Lite. This newer unit has some features we really like. The new touch screen is easy to use and the powder tray cover slips off easily — no more hinges to fight. Most importantly the CM Lite has a redesigned, fluted dispensing tube which delivers powder kernels in a smooth flow with no clumps. The RCBS Rep told us “No more McDonald’s straw required”. We tested the unit and it does seem like the newly-designed dispensing tube is better. In fact, this new design will be adapted to the next generation of larger ChargeMasters. The ChargeMaster Lite ships complete with calibration check weights and cleaning brush. MSRP is $299.95 with “street price” around $239.99 at Amazon.

If you’re interested in the RCBS ChargeMaster Lite, here are three recent video product reviews. By watching these videos you can see all the features of the ChargeMaster Lite demonstrated. In the third video, the host also “compares and contrasts” the ChargeMaster Lite with the original ChargeMaster 1500, explaining the differences between the two units. Have at it:

Panhandle Precision ChargeMaster Lite Bench Test and Demo (Good Detailed Review):

Here is the RCBS Press Release: “The new RCBS ChargeMaster Lite packs unparalleled powder-measuring accuracy in a compact package. The one-piece unit features an LCD touchscreen display that ensures accurate data input. The hopper holds nearly a pound of smokeless powder, and can dispense anywhere between 2 to 300 grains with a +/-0.1-grain accuracy.”

UltimateReloader ChargeMaster Lite Unboxing:

Original ChargeMaster 1500 vs. ChargeMaster Lite:

Worth Considering Also — the Frankford Arsenal Platinum Series Intellidropper
Frankford Arsenal also offers an electronic powder scale/dispenser, the Intellidropper. This unit dispenses quickly, loads can be controlled with a Mobile App. Two years ago we did an in-depth Intellidropper Review. If you are in the market for a powder scale/dispenser, you should definitely consider the Intellidropper as well as the RCBS Chargemaster Lite. Watch this video to see how it works:

The Intellidropper is the most high-tech powder scale/dispenser to hit the market. This machine offers a unique powder calibration mode and the first-ever, mobile APP-controlled powder dispensing system. With a retail price under $200, the new Intellidropper is $70 less than the ChargeMaster Lite.

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March 7th, 2021

2021 NRA National Championships Schedule for Camp Atterbury

NRA national match championships camp atterbury 2021 f-class high power mid-range Long range ELR pistol smallbore

NRA Competitive Shooting has released the Official Calendar for the 2021 NRA National Championships at Camp Atterbury. The 2021 NRA Nationals at Camp Atterbury start with registration for the Smallbore Championships on Tuesday, July 6. The Smallbore Nationals continue through Sunday, July 18. The Precision Pistol National Championships begin on Tuesday, July 20, with the F-Class Mid-Range Nationals starting July 22 (registration/practice), with F-Class Long-Range commencing on July 27. Moving on to High Power Rifle, the Fullbore event runs August 1-7, while the Mid-Range Nationals begin on Tuesday, August 9, followed by the Long-Range Nationals starting on August 14, 2021. Finally, the NRA Extreme Long-Range (ELR) Championship begins on Friday, August 20 and concludes Saturday, August 21. The last week of the month, August 22-27 is slated for OTC competition.

NRA national match championships camp atterbury 2021 f-class high power mid-range Long range ELR pistol smallbore

Smallbore Rifle Championship: 6-18 July, 2021
Precision Pistol Championship: 20-25 July, 2021
F-Class Mid-Range Championship: 21-25 July, 2021
F-Class Long Range Championship: 27-30 July, 2021
Fullbore Championship: 1-7 August, 2021
High Power Mid-Range Championship: 9-13 August, 2021
High Power Long Range Championship: 14-19 August, 2021
ELR 1-Mile Championship: 20-21 August, 2021
OTC Competition: 22-28 August, 2021

NOTE: Listed dates include registration/sign-up and/or practice day, and award ceremony.

See full 2021 Camp Atterbury NRA National Championships calendar below. CLICK to view larger, full-screen printable image that is easier to read. ENLARGE (+ with mouse) after loading to read small print.


CLICK CALENDAR to VIEW Full-screen PDF then click Enlarge (+)

NRA national match championships camp atterbury 2021 f-class high power mid-range Long range ELR pistol smallbore

To learn more about the 2021 NRA Nationals, visit compete.nra.org. And for the latest updates, subscribe to the free Shooting Sports USA Insider newsletter.

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