We recently reported on the new Jennings F-TR stock with integrated bipod. When we first saw this rig we thought, “OK, it looks cool, but how does it shoot?” Well, we had a chance to test a .308 Win F-TR rifle built by Chesebro Rifles using the Jennings stock, Barnard action, and 32″ Bartlein barrel. With the gun on the bench, we first shot a few rounds to confirm zero and test for function.
Then gun-builder Mark Chesebro set the rifle on the shooting mat, opened up a box of Federal 168gr Gold Medal Match (GMM) .308 Win ammo, and got down to business — from the ground. What happened next can only be described as “shock and awe”. Mark nailed three successive groups that left us shaking our heads in amazement. The Jennings stock works. Does it ever. This gun hammers.
All groups were shot from the ground, bipod-supported, with Federal factory GMM ammo.
Mark’s first three-shot group had two shots in one hole, then the third leaked a bit high for a 0.184″ group. Then Mark dialed down 2 MOA elevation, and drilled an astonishing 3-shot .047″ group. (For reference, the black diamond in the orange paster is 1/4″ from point to point.)
I was watching through a Swarovski spotting scope and I saw all three shots track into one hole that just got a little whiter in the middle with each successive round. I yelled out “Stop shooting!” because I wanted to measure the group. It was an easy mid-zero — and honestly it looked like just one bullet hole from a pistol. That is amazing with factory .308 Win ammo, particularly in a barrel throated for 185s, not the 168gr SMKs Federal uses in its Gold Medal Match .308 ammunition.
After measuring Mark’s 3-shot bughole, we walked back to the firing line and Mark shot a full 5-shot group. This would have been a two-flat, but he flinched a bit and his third shot went a little high to open the group to a 0.233″. Still darn impressive with factory ammo…
Editor’s Comment: This Gun is Ultra-Stable and Tracks Straight Back
I had a chance to shoot the gun from the ground. I can tell you this — the stock design really works. With the wide-track bipod, the gun is incredibly stable. As you’re aiming there is virtually zero horizontal movement in the crosshairs. All you need to do is squeeze the ears to set your vertical Point of Aim and pull the trigger. This thing is one of the easiest guns to shoot accurately (from the ground) that I’ve ever tried. You don’t have to struggle for stability at all — the gun wants to stay dead calm.
With the large, cylindrical Delrin feet placed on a mat, the gun tracks straight back. And there is no hop, no bounce, no roll. In fact, the gun tracked so well that I could see my bullets impact on the paper target. That’s surprising for a .308 Win with no muzzle brake. After a shot I could slide the gun forward and the crosshairs were right where they should be — the only thing I had to do is squeeze the ears to re-set my vertical. All I can tell you is the thing is very easy to shoot well.
I don’t know whether it is because of the forward-angle geometry of the legs, or the Delrin feet, or the properties of the carbon fiber tube that supports the front end, but the gun seems to have more damping than other metal-chassis stocks I’ve tried. Some metal-stocked guns seem to “ring” and transmit a sharp pulse to the shooter. This Jennings stock doesn’t do that — it seems to soak up vibration somehow. And the recoil is very mild, I think because the Delrin feet slow the gun down as they slide back smoothly.
Bottom Line:We came away very, very impressed with this rifle and the Jennings stock. I have never experienced a bipod-equipped rifle (in any caliber) that is easier to aim and hold steady, or which is easier to return to precise point of aim after each shot. And, without question, this is one of the most accurate .308 Win rifles we have ever shot from the ground. And that was with factory ammo, not tuned handloads!
Making a Great Design Even Better
Could the rifle be improved? Yes. While there is some rear elevation adjustment (via an eccentric bag-rider that rotates) we would like to see more rear-end elevation adjustment, so the gun could better adapt to uphill and downhill target placements. Also we’d like to see a higher mounting point for the bag-rider so you could use a taller, beefier rear bag. We discussed these points with Mark Chesebro, and he’s agreed to start prototyping some upgrades. This may include a thumbwheel-adjustable bag-rider (sort of like an upside-down adjustable cheekpiece). At our suggestion, the vertically adjustable bag-rider may be offered in two versions — straight and angled. With an angled bag-rider (i.e. with a slight amount of drop front to rear), you could adjust your vertical point of aim by sliding the gun forward or aft in the rear bag.
We will supplement this test report with more photos and video in a few days. We know you want to see how well it tracks. The video tells the story better than words can…
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Most of us assume that if we weigh our powder carefully (down to the tenth of a grain or less) we can achieve a uniform powder fill from case to case in our handloads. Weighing does ensure that the weight of the propellant in each case is the same, but is the column of powder the same by volume each time? “Not necessarily” is the answer. An interesting experiment by our friend Boyd Allen demonstrates that the manner in which you place kernels in the case can make a significant difference in the height of the powder column within the brass case.
Using a Gempro 250 scale, Boyd measured exactly 30.6 grains of Vihtavuori N-133 powder. He then inserted this powder in the same cartridge case multiple times. (The case has a fired primer in place.) But here is the key — Boyd used various filling techniques. He did a slow fill, and a fast fill, and he also experimented with tapping and drop tubes. What Boyd discovered was that you can start with the exact same weight of powder (in fact the very same set of kernels), yet end up with vary different fill heights, depending on how you drop the kernels into the case. Look at the photos. Despite variations in lighting, the photos show the same 30.6 grains of powder, placed in the same cartridge, with four different methods.
Boyd Explains the Procedure Used for his Experiment.
EDITOR’s NOTE: So there is no misunderstanding, Boyd started with a weighed 30.6 grain charge. This identical charge was used for ALL four fills. After a fill the powder was dumped from the case into a pan which was then used for the next fill technique to be tried. So, the powder weight was constant. Indeed the exact same kernels (of constant weight and number) were used for each fill.
Boyd writes: “I used the same powder for all fills, 30.6 gr. on a GemPro 250 checked more than once. All fills employed the same RCBS green transparent plastic funnel. The fast drop with the funnel only overflowed when it was removed from the case neck, and 15 granules of powder fell on the white paper that the case was sitting on. The fast-funnel-only drop with tapping, was done with the funnel in place and the case and funnel in one hand, while tapping the case body with the index finger hard, many times (about 20 fast double taps). My idea here was to “max out” the potential of this tapping technique.
The slow drop with the funnel and 10″-long .22 cal. Harrell’s Precision drop tube, was done by holding the scale pan over the funnel and tapping the spout of the pan repeatedly on the inside of the funnel about 1/3 down from the top, with the scale pan tilted just enough so that the powder will just flow. Many taps were involved, again, to max out the technique.
Again, to be clear, after each case filling, the powder was poured from the case back into the scale pan carefully. You may notice the similarity between the fast drop with the drop tube, and the funnel only with tapping. Although I did not photograph it, fast tube drop and tapping (combined) improved on tapping alone, but only to about half as far down the neck as the slow with drop tube. Due to the endless possible permutations, I picked four and left it at that.
I believe that I can make the rough judgment that the scale pan funnel and drop tube technique, which involved a longer drop period, and probably less velocity at the top of the tube, left more room in the top of the case neck than the slow drop from the measure with the same drop tube. You have both pictures, so you can make the comparison.” — Boyd
Does Powder Column Height Variance Make a Difference?
Boyd’s experiment proves pretty conclusively that the method of dropping a given weight of powder can affect the height of the powder column in the case and the degree of powder compression (when a bullet is seated). He showed this to be true even when the exact same set of kernels (of constant weight) was used in repetitive loadings. This raises some interesting questions:
1. Will subsequent cartridge transport and handling cause the powder to settle so the variances in powder column height are diminished?
2. If significant inconsistencies in powder column height remain at time of firing, will the difference in fill level hurt accuracy, or result in a higher extreme spread in velocity?
3. Is there any advantage (beyond increased effective case capacity) for a tight (low level) fill vs. a loose (high level) fill?
We don’t know the answer to these follow up questions. This Editor guesses that, if we tested low-fill-height rounds vs. high-fill-height rounds (all with same true fill quantity by weight), we might see meaningful differences in average velocity. I would also guess that if you fired 10 rounds that exhibited quite a difference in powder column heights, you might see a higher ES/SD than if you shot 10 rounds loaded with a very consistent powder column height (either high or low). But further testing is needed to determine if these predictions are true.
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Here’s a cool new item for the avid shooters on your Xmas gift list. For this holiday season, Creedmoor Sports has created special package-wrapping paper with target graphics. The unique, heavy-weight gift wrap features Dennis DeMille’s High Power Rifle National Record Target score of 200-20x+100-8x at 200 yards. The 36″ x 24″ sheets are made from 60# stock with a gloss finish. Individual wrapping sheets cost $1.95 or you can buy five sheets for $7.95. This special wrapping paper with bullseye graphics is perfect for gifts to the shooters in your family, or for gifts a club may present to members at year’s end.
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Famed exhibition shooter Bob Munden passed away December 10th, from a heart attack. Bob was 70 years old. Munden’s friends at Hodgdon Powder stated: “Bob was a legend, a showman and a gentleman above all else.” Born February 8, 1942 in Kansas City, MO, Bob began his professional shooting career at age 11 in California. While still in high school, Bob placed second in the noted LeatherSlap competition, and that launched his fabled career as a fast-draw specialist and trick shooter.
Over his long career, Munden traveled around the globe giving shooting exhibitions. Munden was famous both as a speed-draw specialist and a trick shooter with all types of firearms. He was recognized as “The Fastest Man with a Gun Who Ever Lived” in the Guinness Book of World Records. As a star of Shooting USA’s “Impossible Shots” TV show, Munden provided amazing demonstrations of shooting skills for a national television audience — such as splitting a playing card tossed in the air. Many of Munden’s famous trick shots were “first-ever” challenges, tricks that no other marksman had ever done before.
Over the years Bob, often with his wife Becky (who is also a skilled shooter), appeared on many television shows, most famously American Shooter, Ripley’s Believe it or Not, Stan Lee’s Superhumans, Shooting USA, and Shooting USA’s Impossible Shots. Munden is featured in DVDs including Bob Munden: Outrageous Shooting and Bob Munden: The Collector’s Edition.
Registered as members #118 and #119 respectively, Bob and Becky entertained at the Single Action Shooting Society (SASS) End of Trail World Championships of Cowboy Action Shooting 30 times with what Becky proudly said was the most complex presentation ever offered at an exhibition shooting show. She added that Bob was Cowboy Action Shooting’s first gunsmith. After her beloved Bob passed away this week, Becky said: “We had an incredible, memorable life together.”
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Hornady offers a handy power case prep tool driver (item 050160) with three power stations. Hornady basically took its previous single-drive Power Case Prep Assistant (item 050155) and added gearing to run three different heads. It took some clever engineering to accomplish this while maintaining the small footprint of the original one-head machine. MSRP for the new Case Prep Trio (item 050160) is $129.39. If you can live with a single power take-off, the older one-head Case Prep Assistant is still offered on “close-out” at some vendors. If you look around you may find one for as little as $79.99.
Hornady calls its updated machine, with 3-tool capacity, the Lock-N-Load® Case Prep Trio. With three active stations, you can chamfer, deburr and clean primer pockets without having to change tools. The Case Prep Trio ships with inside chamfer, outside chamfer, and deburr tools. You can also use the machine with other optional 8/32 threaded accessories such as primer pocket reamers and case neck brushes. Conveniently, the Case Prep Trio has on-board storage for your tool-heads.
Story tip by EdLongrange. We welcome reader submissions.
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Only 13 more shopping days before Xmas, boys and girls. If you’re getting desperate, as time runs out for buying, packing, and shipping, consider giving an Electronic Gift Card from Sinclair Int’l or Brownells. eGift Cards can be sent at the last minute, and they are as good as cash for shopping with Sinclair Int’l or Brownells. If you prefer the hands-on approach, you can purchase a conventional Sinclair Int’l Gift Card and have it mailed to you or directly to the lucky recipient. CLICK HERE for more details.
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Yamil Sued provides expert photography tips in Capturing the Action, an instructional DVD from Panteao Productions. In this new DVD, Yamil reviews camera options, camera settings, which lens to use, support gear, range etiquette, positioning and composition, shooting in low light, shooting staged shots, post-production, and much more. Yamil, who also competes in action shooting matches, explains how to get great action photos and memorable images of your fellow shooters. Yamil knows his stuff — he regularly works for Smith & Wesson, Dillon Precision and other top-tier gun industry companies.
Though Yamil is probably best known for his action photography, Yamil is also a gifted studio photographer — you’ve seen his work on numerous magazine and catalog covers.
Watch Preview Trailer for Yamil Sued Photography DVD
Yamil Sued has been a working professional photographer for 27 years. He is a graduate of Brooks Institute of Photography in Santa Barbara, California, with a Major in Illustration Photography and Color Technology.
If you’re looking to achieve pro-quality results when photographing action shooting matches, this video is worth getting. Right now, as a holiday promo good through December 26th, you can pre-order the DVD for $37.49 — that’s 25% off the regular $49.99 price. Order direct from PanteaoProductions.com.
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Our friend and product tester Joe Friedrich is the proud owner of a spectacular front rest from James Pappas. This rest is used for both air rifle and rimfire benchrest matches. The fancy Pappas front rest is a shortened, front-support-only version of the Pappas one-piece rest, which is popular with rimfire benchresters. Pappas engineered this rest to comply with air rifle benchrest rules which do not allow use of integrated (one-piece) front and rear rests. The end result was a 30.8-lb masterpiece of machining.
The workmanship on this Pappas front rest is astounding. Accurately described as a “work of art” by Joe Friedrich, this rest, crafted of aircraft-grade aluminum, sets new standards for “Benchrest BLING”. It looks like it should be on display in an art museum. Nearly all components of this rest, including the adjustment controls, have been polished to a mirror finish.
Convenient Rear Windage and Elevation Controls
The Pappas front rest features separate fine-tuning controls for windage and elevation, plus a central gross-elevation control. Normally, once the rest is centered-up on the target, you can make all needed elevation and windage adjustments with the rear (fine-adjustment) controls. In the video below, Joe explains how the controls work as he practices with his modified Theoben Rapid MFR air rifle. Joe hopes to use this new Pappas rest in the upcoming Air Rifle Benchrest Worlds to be held in South Carolina this summer. (Note: In the last minute of the video, the back-lighting was so intensely bright that we lost detail in the foreground. We apologize for that flaw, but you can still hear the audio.)
Price for this Masterpiece? Don’t Ask…
If you are interested in getting a similar rest, visit PappasRimfireProducts.com, or call James Pappas directly at (817) 735-9883. Be forewarned — James said “If you need to ask about the price, you probably can’t afford it.” This is truly the “Rolls-Royce” of front rests, and it will be priced accordingly.
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For decades shooters have used brass jags attached to brass-tipped cleaning rods. These work effectively. But there is one problem. Many bore solvents will react with the brass metal to give “false positives”. You can get bluish-green patches even when there is no copper fouling in your bore.
To solve this problem DeweyRods.com offers a full line of aluminum jags, aluminum brush adapters, and nylon-coated cleaning rods with aluminum tips. Dewey explains: “Ammonia-based solvents attack copper & brass but also leave your patches a blue-green color so you are never sure if your bore is truly clean of copper. Our aircraft-grade aluminum has the same hardness of brass, it will not embed impurities or harm your bore, and ammonia will not attack it.” As shown below, along with caliber-specific aluminum jags (center), Dewey now offers aluminum thread adaptors (left) and aluminum-shaft brushes (right).
New Dewey ‘Copper Eliminator’ Cleaning Rods
These new rods have the same nylon coating and handle assembly as Dewey’s standard coated rods, but they feature a chemical-resistant, 8/32 female-threaded, aluminum ferrule. No brush adapters are required. Each rod is supplied with a male-threaded aluminum jag. Dewey charges $39.95 for these rods, but you may find them slightly cheaper at other vendors.
Copper Eliminator Rods are currently offered in two diameters (.22-.26 Cal, or .27+ Cal), and three lengths: 36″, 40″, 44″. Listed rod lengths do NOT include handle assembly. One last note: Dewey cautions users to avoid TM Solution, because this solvent may harm Dewey’s nylon rod-coatings.
Story sourced by Edlongrange.
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Bryan Litz, Ballistican for Berger Bullets, is actually a trained rocket scientist, not to mention a skilled long-range shooter. Bryan’s books on Ballistics and Precision Long Range Shooting have been recognized as the leading resources of their kind in print. Now you can save money on Bryan’s highly-regarded books through a special holiday promotion.
Bryan tells us: “For a limited time, we are taking an additional $5 off the retail price of our titles Applied Ballistics for Long Range Shooting 2nd Ed. (regularly $49.95, $44.95 on sale) and Accuracy and Precision for Long Range Shooting (regularly $34.95, $29.95 on sale). And, by purchasing direct from Applied Ballistics you can get your copy autographed by the author”.
Here are what others are saying about these books.
“Got my copy of Accuracy and Precision for Long Range Shooting and can’t put it down! Exceptionally well done! Both this and Applied Ballistics for Long-Range Shooting” are definite requirements for all long range shooters!” — Eric K.
“Thanks, Brian. You have opened up a whole new ‘world’ in shooting, for those of us who love shooting and hunting, but don’t have the academic background to really appreciate the intricacies of science.” — Terje N.
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After concluding its 2012 Board Meeting, the NBRSA has issued some announcements for its membership. The Fee structure has changed, and Match Directors are requested to submit info on upcoming 2013 Matches. In addition, the NBRSA noted that Long Range Rule Books are now on sale for $5.00. Call (307) 655-7415 to order these Rule Books.
NBRSA Fee Schedule for 2013
Dues and match fees will change beginning January 1, 2013. The new fee structure is designed “to be equitable to everyone”, with adjustments reflecting shipping costs. Normal match fees change to $3 per shooter per day. Annual Fees will be:
USA Domestic Annual Members & Clubs: $60
CANADIAN Annual Members: $60 + $25 shipping — Total US $85
INTERNATIONAL Annual Members: $60 + $60 shipping — Total US $120
2013 Match Schedules and Forms
The NBRSA requests that match directors send in their 2013 match schedules to Regional Directors as soon as possible. This will allow the NBRSA to post schedules online and in Precision Rifleman magazine. Match Directors who require Forms should click the links below.
Stan Pate is the Captain of Savage’s National Championship F-TR Team. In this article, Stan explains how to adjust the action-screw tension on a three-screw Savage target action to achieve the best accuracy. The procedure described here can be used for any Savage action, including the two-action-screw models. However, the optimal settings for each particular rifle may vary slightly.
Match shooters need to get that extra accuracy edge from our ammunition and firearm. It is easy to get one of the Savage rifles to shoot accurately — even to match standards. If you are looking for that little bit more from your rifle, then please read a method that I have found that works for me. For those of you that are familiar with tuning a receiver (such as a match rimfire action), this article will be nothing new. For the rest of you, this might be new material. The goal here is to find the “sweet spot” for the rifle in relation to the torque settings used on the receiver screws. The proper torque settings [can vary] from rifle to rifle, but they will usually have a noticeable effect on consistent group sizes. A properly-torqued rifle will optimize the “harmonics” of the barreled action using the receiver screws so that the gun delivers peak consistency.
Here is the process I have found that works for me in tuning a Savage rifle receiver to peak accuracy. To use my process you first must already have a load that shoots accurately and consistently in your rifle, and I always use a fouled barrel like I’d be shooting in a match. This process works for me in both the model 10 (two receiver screws), and the model 12 (three receiver screws).
Seat Recoil Lug and Start with Front Action Screw(s)
On the model 12, I will first ensure that the recoil lug is seated securely against the stock by just lightly tightening up the front receiver screw then gently but firmly bumping the butt pad against the floor. Next I will tighten up the front two receiver screws to 30 inch-pounds starting at 20 inch-pounds and working up to the 30 inch-pounds in 5 inch-pound increments, and always tightening the front screw first and then the second screw. Once the front two receiver screws are torqued to the final torque setting, I will set the rear receiver screw to 5 inch-pounds and shoot a 5-shot group [to evaluate accuracy].
Increase Torque Incrementally on Rear Action Screw
After the group is shot and I am satisfied that I called all of the shots as good shots I will allow the rifle to cool off to about the temperature that the fist group was shot at. I will then add 5 inch-pounds to the rear receiver screw and shoot another five-shot group and allow the rifle to cool again. I repeat this process until I have tightened the rear receiver screw to 40 inch-pounds or have seen the groups get smaller and then start getting larger again. Once you have seen the groups decrease and then start to increase in size then you will have found the area of torque to work in. You can then can fine tune this to the exact inch-pound torque settings.
Tuning a Model 10 with Two Receiver Screws
The Savage model 10 action, which has two receiver screws, uses the same process as the three-screw model 12. Measure your group sizes and place the measurements in front of you so that you can see the bell curve showing where your best groups were achieved. NOTE — there may be a better way of doing this and if you should have one, I’d be very interested in hearing it. Good shooting and I hope to see you all on the range. – Stan Pate
This is on the Palma rifle using the torque settings of 30 inch pounds on the front two reciever screws, and 15 inch pounds on the tang screw, it is approximately 1/2″ center to center.
This is my second torque setting which for this rifle and this load is the optimal setting of 30 inch pounds on the front two reciever screws and 25 inch pounds on the tang screw, this group is approximately .180″ center to center.
This is the third torque setting which for this rifle is moving away from the optimal torque setting towards the heavy side of the scale. This torque setting results shows that you will usually see a “bell curve” of accuracy as you move into the optimal torque setting. This group is almost .7″ and the torque setting was 40 inch pounds.
This article was edited for length to appear in the Daily Bulletin.
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Mark’s first three-shot group had two shots in one hole, then the third leaked a bit high for a 0.184″ group. Then Mark dialed down 2 MOA elevation, and drilled an astonishing 3-shot .047″ group. (For reference, the black diamond in the orange paster is 1/4″ from point to point.)
I don’t know whether it is because of the forward-angle geometry of the legs, or the Delrin feet, or the properties of the carbon fiber tube that supports the front end, but the gun seems to have more damping than other metal-chassis stocks I’ve tried. Some metal-stocked guns seem to “ring” and transmit a sharp pulse to the shooter. This Jennings stock doesn’t do that — it seems to soak up vibration somehow. And the recoil is very mild, I think because the Delrin feet slow the gun down as they slide back smoothly.
Famed exhibition shooter 
Hornady offers a handy power case prep tool driver (item 050160) with three power stations. Hornady basically took its previous single-drive 
Yamil Sued provides expert photography tips in 
Yamil Sued has been a working professional photographer for 27 years. He is a graduate of Brooks Institute of Photography in Santa Barbara, California, with a Major in Illustration Photography and Color Technology.
After concluding its 2012 Board Meeting, the NBRSA has issued some announcements for its membership. The Fee structure has changed, and Match Directors are requested to submit info on upcoming 2013 Matches. In addition, the NBRSA noted that Long Range Rule Books are now on sale for $5.00. Call (307) 655-7415 to order these Rule Books.
Match shooters need to get that extra accuracy edge from our ammunition and firearm. It is easy to get one of the Savage rifles to shoot accurately — even to match standards. If you are looking for that little bit more from your rifle, then please read a method that I have found that works for me. For those of you that are familiar with tuning a receiver (such as a match rimfire action), this article will be nothing new. For the rest of you, this might be new material. The goal here is to find the “sweet spot” for the rifle in relation to the torque settings used on the receiver screws. The proper torque settings [can vary] from rifle to rifle, but they will usually have a noticeable effect on consistent group sizes. A properly-torqued rifle will optimize the “harmonics” of the barreled action using the receiver screws so that the gun delivers peak consistency.
