Reloading Tech: Wiring up a 6.5 Grendel

 

I’ve had the PressureTrace™ II system for a few years now and I’ve found it handy in examining the pressure characteristics of my reloads.  It’s been particularly handy in determining the pressure differences between two projectiles of the same weight using the same powder charge.  I’ve only used the system on my bolt guns up to now. I finally wired up my new 6.5 Grendel AR pattern rifle build, the details of which I can share in another post.

In terms of published data there still isn’t that much out there compared to other cartridges, but new data is coming out all the time.  In my estimation Alexander Arms® produces the best factory ammunition for the 6.5 Grendel since it was Bill Alexander who spear headed the design of the round.

Factory 123 gr Lapua Scenar Load

I wanted to use the Alexander Arms factory loads to compare against my loadings for my Grendel.

Since I had some time off yesterday and it was raining, I decided that I would get some load testing done under cover with the range all to myself.

Conditions:
Temp: 42ºF
Baro. Pressure: 29.83
RH%: 97%
Equipment:
Pressure Trace II System
Magnetospeed Chronograph

***CAUTION The data presented below is by no means meant to represent data published via SAAMI approved testing or test methods, and may not reflect the true pressure; this pressure testing is only meant as a comparative tool***

If you are curious as to what a Pressure Trace system is, check out the vendor website at Shooting Software

The barrel I am currently running is a Shilen Stainless Match HBAR 20″ 1:9″ twist featuring a rifle length gas system.  Its worth noting that most bullets in the 123 gr weight aren’t optimal in a 1:9″ twist barrel due to marginal theoretical stability, with the exception of the Hornady 123 gr Match ELD projectiles.

On to the data:

SAAMI MAP (Max Average Pressure): 52,000 psi

Pressure readings I’ve collected from Factory Alexander Arms 123 gr Scenar rounds following an estimated offset of 13000 psi added to original pressure value measure by the pressure trace system.

I’ve chronographed these rounds in 75-80ºF outside temps and they are cruising at about 2510 fps ±10fps out of the 20″ bbl, which is a fair amount faster than at 42ºF as we see here, so I think my estimation on the offset was correct. My aim is to establish the summer time pressure readings of the factory loads as my working maximum pressures.

Pressure readings from IMR 8208 XBR with a 26.5 starting load (not shown here) in 0.5 gr charge increments out to 28.5 gr (also not shown because of pressure signs of previous loadings.

Its clear that I’ve reached high pressure characteristics and any increase in charge weight would unnecessarily strain the Grendel and could eventually approach an unsafe condition.  I now believe I’ve established a safe maximum of 26.0 gr of IMR 8208 XBR, at least in these low temps. Surprisingly the charge to pressure correlation peaked at a lower charge weight than I would have expected based on published data out there for a similar weight projectile.  Published IMR loads with the 123gr Sierra Match King peak at a maximum charge of 28.5 grains (compressed).  I may have to re-adjust the charge downward during the summertime temps to stay consistent with pressures if I decide to stay with this load.  This is another reason why it’s always smart to back off by 10% (I started 7% from max). That being said, this is an accurate powder with 3/4″ groups.  I’ll likely study other powders as well for comparisons sake, such as Hodgdon CFE223 and Accurate 2520, both known for velocity production.  There is little data on CFE223 use, this is where the PressureTrace™ II system will shine, now that I have a baseline.

26.5 gr 8208 XBR 123 gr Hornady ELD Match vs Factory Alexander Arms 123 gr Lapua Scenar

Based on the images above, the Alexander Arms rounds are close in appearance to when I’ve fired them in the summer time, so these marks may be more associated with chambering.  One thing I’ve noticed is that sometimes just chambering a round produces some ejector swipe marks.  I think the marks on the reload to the left suggests that I should back off to 26.0gr and call it a day.

If your range has a covered firing position and it’s raining out, get outside and work your craft and understand your gun/ammunition combination, you just might have the range all to yourself

Look out for a companion piece to this article, as I purchased a 24″ barrel made by Satern Barrels and sold by Brownells, testing will commence with this shortly using the pressure trace system.

Until next time….

See you at the range!

Copyright © 2017 All Rights Reserved.

TargetVision Camera

Nearing the end of the competition season I became frustrated with the number of opportunities I had to practice a the 600 yard line.  One of the drawbacks to a 600 yard range in New England is the proximity to civilization.  Tracking your hits at such a long distance requires a spotter or someone to pull targets for you in the pits.  You HAVE to know you’re on the target.  This makes shooting/practicing by yourself a non-starter for safety reasons.  I wrote to the folks over at TargetVision and asked if I could do a review out of my own curiosity and for our readership.  They liked the idea and shipped a unit over for us to take a look at.

They sent over the LR-2 unit for us to review, which retails for $649 and is good for targets up to a mile away, wow!!  They do have other offerings for reduced distances, so take a look at the website to see what unit would better suit your needs.

When I opened the exterior cardboard box, I remarked to myself about the high quality of the carrying case for the camera system.  In the pic below, you can see that this case will protect your investment.  One of the little things that the folks over at TargetVision thought of is to ensure that the system doesn’t turn on in transit, so they taped the power switch in the off position.

From targetvisioncam.com Website:

The LR-2 is a fixed lens, portable, battery powered, wireless target camera system that can be viewed from a phone or tablet.  This target camera has a range of one mile and a run time of 12 + hours. TARGETVISION is the perfect companion for long range shooters, competitive shooters, and people who are looking for a more interactive and entertaining shooting experience.  This unit is able to clearly see .17 caliber bullet holes (and larger) at any distance up to a mile.  TARGETVISION consists of two pieces, the camera/transmitter and the receiver.  The camera sits down range about 10-15 feet from the target and can be moved within that range to adjust the field of view.  The receiver sits next to the shooter on the ground or shooting bench.

External antenna is not required to go one mile, but optional.

NO CELL OR WiFi SERVICE REQUIRED!

NO SKEW CORRECTION REQUIRED!

MADE IN TEXAS.  

Instructional Videos 

APP Video 

Hardware

Specifications

  • Resolution: 1280 X 960
  • Pivotable Camera
  • Batteries: Rechargeable Lithium Ion
  • Band: 2.4GHz
  • Weight: 13 lbs.
  • Hard Case Dimensions: 16.00″ x 13.00″ x 7″ (IP67 Rated)

In the Box

  • TARGETVISION Camera
  • TARGETVISION Receiver
  • Waterproof, Crush-proof, Dust-proof Custom Hard Case
  • 12V DC Charger
  • 2 Tripods

 

Serious protection for that hardware!

I was impressed with the quality so far and couldn’t wait to get it out to the range, but before I did, I inspected the system and made sure to charge both the Transmitter and Receiver. After the charge up, I was ready for some range action.  It was some time until I could find an opportunity to get out and take it for a spin, but I eventually got out to the 600 to use the system.  Set up was ridiculously easy!  You set up the camera/transmitter unit off to the side about 10 feet or so away, connect to the WiFi network and center the target in the camera view by making final adjustments to the ball/socket style camera lens.  After that, you head back to your equipment, confirm the image in your smartphone/tablet, and start shooting.  I had this gear up and running in 15 minutes.  See the TargetVision video below:

Below are the images from my set up at the Nashua Fish & Game Club.

Simple as 1, 2, 3!

Marking your shots is a breeze with this system.  So after set up and watching my rounds impact down range, I’m officially hooked. Guaranteed after I pick up one of these, that next season will show a marked improvement in my accuracy at distance.  The image below is from a photo I took and exported using the TargetVision app functionality on my iphone.  I am thoroughly impressed with this camera rig.  This gear gets a solid A in my book!

Not bad, but this isn’t an F-Class Target.

The bottom line is if long range shooting is on the menu, get your hands on a high quality target camera system like this one and as they say at TargetVision, “Never Lose Sight”!

See you at the range!

Copyright © 2017 All Rights Reserved.

S&W New Model 686 and 686 Plus Revolvers are Purpose-Built for Competition

 

 

FOR IMMEDIATE RELEASE

 

Contact:
Matt Spafford, Smith & Wesson Corp.

1-844-772-5159

media@smith-wesson.com

 

New Model 686 and 686 Plus Revolvers

Join Performance Center® Brand of Firearms

New Model 686 and 686 Plus Revolvers are Purpose-Built for Competition

 

SPRINGFIELD, Mass., (November 6, 2017) – Smith & Wesson Corp. announced today the launch of two new Performance Center revolvers, the Model 686 and Model 686 Plus, to the company’s line of competition firearms. The new Model 686 and 686 Plus revolvers feature premium Performance Center enhancements for a competition-ready package, such as a speed release thumbpiece for quick reloads, interchangeable sights, and a Performance Center tuned action.

Tony Miele, General Manager of the Performance Center, said, “When we began designing these revolvers, we wanted to develop an out-of-the-box solution for those seeking a revolver for competition shooting. Equipped with a speed release thumbpiece, tuned action, and unique visual appearance, these new revolvers have attractive features for both new and seasoned competitive shooters.  The new Performance Center Model 686 and 686 Plus feature Performance Center enhancements that provide an excellent foundation for shooters looking to customize and gain a competitive edge in the shooting sports, or for those who are new to the sport and looking for an excellent competition-ready value.”

The new Performance Center Model 686 and 686 Plus revolvers feature a stainless steel frame, cylinder, and barrel with a matte silver finish. Built for competition, these revolvers include a Performance Center speed release, interchangeable orange front sight, and a Performance Center tuned action. These revolvers also feature a unique visual design, including an unfluted cylinder, vented ribbed barrel, and a chromed custom teardrop hammer.

Chambered in .357 Magnum and .38 S&W Special +P, the new Performance Center Model 686 revolver is equipped with a 6 round cylinder and 4-inch barrel, while the Performance Center Model 686 Plus revolver features a 7 round cylinder, 5-inch barrel and features a cylinder cut for moon clips. Both Performance Center Model 686 and 686 Plus have an MSRP of $966.

All Smith & Wesson products are backed by a limited lifetime warranty and lifetime service policy.

For more information about the new Performance Center Model 686 and 686 Plus revolvers, including spec sheets and images, please click here.

For more information on Smith & Wesson products, please visit www.smith-wesson.com

About Smith & Wesson

Smith & Wesson Corp. is a provider of quality firearms for personal protection, target shooting and hunting in the global consumer and professional markets. Smith & Wesson is world famous for its handguns and long guns sold under the Smith & Wesson®, Performance Center®, M&P®, Thompson/Center Arms, and Gemtech® brands.  Through its Manufacturing Services Division, Smith & Wesson Corp. also provides forging, machining, and precision plastic injection molding services to a wide variety of consumer goods companies. For more information on Smith & Wesson, call (800) 331-0852 or log on to www.smith-wesson.com.

 

 

Under the Christmas Tree – A Leupold Rifle Scope

Tell your loved ones now, that you want a better rifle scope for next season. Tell her or him you want an American Made and Engineered Leupold scope. Why? They are an investment for life of the finest, most rugged and dependable optics on the planet with a Lifetime Warranty.

If you are not a long range hunter or shooter you can perhaps get away with less expensive second class scopes in the 150.00 dollar range but remember that at some point “what you have is gonna be what you hunt big game with” spending thousands of dollars at some future point. Here is the question you should ask yourself: Do I want to risk a $7000.00 hunt on a $150.00 scope (begins with N) with average light gathering and rubber gasket nitrogen filled whatever that can lose nitrogen and produce internal moisture? Well, on a local deer hunt, I discovered that! Glad I was not on a western hunt…

I used my Leupold scopes in Africa on 2 rifles and was I so glad I did.

Optical Clarity, ability to dial your scope accurately are essential for longer ranges. But most importantly your scope will not fog in cold weather and handle the recoil. I had a lesser expensive scope that was great in summer, but out on a cold day, it fogged up and I could not see the deer. Was I upset! I guess you could say that! Lesson learned.

I am a Leupold Scope fan and advocate at least a VX-III Series Scope a world class contender in optics. You get what you pay for here Diamond Coat Glass, Argon Crypton gas.

VX-3i 3.5-10 x40mm for an MSRP of $519.00. https://www.leupold.com/scopes/compact-scopes/vx-3i-3-5-10x40mm

If you can invest more the VX-6 is my champion in 3 -18 x 44mm. From 3 to 18 magnification in just a twist of the dial. And the VX-6 7-42 56mm far below.

Below according to Leupold’s website;

“Diamond Coat 2™ – Exterior lens surfaces are treated with DiamondCoat 2™, an ion-assist lens coating, for higher light transmission and the greatest level of abrasion resistance we’ve ever offered. DiamondCoat 2™ has the additional advantage of assisting in light transmission, for greater brightness, clarity and contrast, and will prove its worth in the wildest places on earth.

Twilight Max Light Management System

“Light management means delivering usable light to your eye and forming a crisp, high contrasting image. Lens coatings are applied that maximize light transmission in blue and red, and balancing colors to develop the highest possible contrast. Glare is controlled with special mechanical structures. This means you can see antler tines in dark shadows long after the competition has gone home.”

Twin Bias Spring Erector System

“The twin bias spring exerts up to 30 percent more holding force on the erector, virtually eliminating erector system backlash and stress on the vital internal workings of the scope, for longer life.”

For heavy recoiling rifles like my 338 Winchester magnum and my 375 Ruger the twin bias erector system was just the ticket to strengthen the erector system and greatly improve field reliability giving me the utmost confidence.

For Long Range Competition or Hunting you can step up to the VX-6 all the way up to the 7 – 42 x 56mm. Its as long as my keyboard below and sports a 34mm tube.

One twist and go from 7x to 42x , Holy Mackerel! Put that on your bull at 600 yards! We shoot this in Long Range Competition and are mightily impressed and will shoot it in all our competitive shoots. It is for someone who needs the best and most power, most light gathering possible.

Invest in American Made Leupold Scopes, Rangefinders, Spotting scopes too!

 

 

 

New Hampshire Rifleman Magazine New High’s

Shooting and Hunting Friends,

Great News! New Hampshire Rifleman Magazine is surging in readership has grown World Wide to over 50,000 readers each year and is on track to exceed 90,000 readers with its current surge of 250 readers a day. I wish to thank all of my readers for following us.

One of my great finds of this past few years is the 6.5 Creedmoor Cartridge for both target and big game hunting and for the exceptional rifle quality of Ruger, Savage, Thompson Center, and Smith & Wesson shown here in testing.

The best rifle hunting bullets are made by Nosler. Such as the partition, AccuBond® and AccuBond Long Range and the gilding copper E-Tip®. We like Hornady too, especially their Precision Hunter™ Cartridges with the ELD-X bullets with Heat Shield™ tip.

Further that the best US made optics are Leupold Rifle Scopes and optical products. I swear by the Leupold name and highly recommend them as a life long investment for both hunting and target.  The VX-6 3-18 is by far the finest scope I have ever owned and has the best clarity, adjustability, durability and lifetime guarantee out there.

As we approach the years end we look forward to larger things to come for New Hampshire Rifleman Magazine.

If you wish to advertise with us, please send email to erhale@comcast.net we will be glad to discuss options with you.

Cheers! Good Hunting!

Ed Hale – Editor-in-Chief/Owner

Felt Recoil: A progression of purchases for the would-be deer and elk hunter. Enter the 6.5 Creedmoor

There are a number of questions to ask yourself as you make a rifle purchase, invariably felt recoil is a significant factor among many others. For young and female hunters and shooters, if it ain’t fun to shoot, the desire will wane in a few outings. The 6.5 Creedmoor is a real all around big game cartridge and is low in recoil and fun to shoot!

Historically, the BB gun and Pellet Rifle begin the progression and have no felt recoil, are fun to shoot, and take small game like squirrels.

Next is the .22 Long Rifle with very little recoil and fun to shoot and can take game up to Coyote.

The .223 is next and geared more for target and varmint/coyote and home defense and has a felt recoil of well under 10 ft-lbs making it easy and fun to shoot. Under strict circumstances it can be used on deer, but I do not recommend it as a deer rifle cartridge.

The .243/6mm is what I call a great starter first deer cartridge as its felt recoil with an 80 grain bullet is very tolerable, fun to shoot and accurate. You can shoot up to 110 grain bullets with a bit more felt recoil and kill deer out to 300 yards. The problem is that the purchase is another in a stepping stone effect toward a real big game rifle.

In 30 caliber a great starter rifle is the 30-30 for close hunting here in the Northeast under 100 yards as it has a low felt recoil but later gathers dust in my closet for more power. I do not consider the 30-30 a real all around big game rifle.

Enter the 6.5 Creedmoor, an outstanding target rifle and what I believe is a real big game hunting rifle cartridge with a low felt recoil of just over 10-12 ft-lbs. Shooting this rifle standing, a 12 to 14 yr old kid can shoot it and handle the low recoil and make a very fine long term Big Game investment and be used in the off season as a tack driving target rifle and varmint cartridge.

Handloading makes the 6.5 a best investment as you can load down to .243 like recoil and work up.

Next is the .270 Winchester which is a very fine hunting cartridge. But if you already own a 6.5 Creedmoor rifle, you don’t need a .270 as the 6.5 replicates it already out to over 500 yards with a 140 grain bullet on deer and elk. Now if you already own a .270 and handload your ammo, then you will never purchase a 6.5 Creedmoor unless you are also a target shooter like me in the off season. The Creedmoor will shoot ultra tight groups that you can rarely shoot with the .270 Winchester and do it with much less recoil. The 6.5 Creedmoor in today’s hunting rifles can shoot holes in holes.

In any rifle you can add a new state-of-the-art recoil pad and cut 50% of the felt recoil. I highly advise that! Accuracy improves dramatically when shooters are comfortable with the felt recoil. In closing, I highly recommend the 6.5 Creedmoor in your favorite rifle for any hunter at ages 12 and over especially if you hand load. And I am a Nosler AccuBond and E-Tip fan too as they stay together in game.

Good Hunting!

© 2017