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July 20th, 2023

6mm Creedmoor — How Velocity Changes with Barrel Length

6mm 6.5 Creedmoor rifleshooter.com Bill Barr barrel length cut-down velocity test chronograph Magnetospeed chrono

A while back, our friend Bill Marr of Rifleshooter.com conducted a fascinating 6mm Creedmoor barrel cut-down test that reveals how velocity changes with barrel length. This time Bill started with a 24″ Proof Research stainless steel barrel on a Howa action. Bill says this was a well-used barrel, with over 1800 rounds through it. So, the velocities might be a bit different than a new barrel of similar length. Bill cut the barrel down in one-inch increments. Here are some results from the test:

24″ Velocity: 2893 FPS | 20″ Velocity: 2755 FPS | 16.1″ Velocity: 2598 FPS

CLICK HERE for FULL TEST REPORT on RifleShooter.com »

6mm 6.5 Creedmoor rifleshooter.com Bill Barr barrel length cut-down velocity test chronograph Magnetospeed chrono

6mm 6.5 Creedmoor rifleshooter.com Bill Barr barrel length cut-down velocity test chronograph Magnetospeed chronoFor this latest test, Rifleshooter cut the barrel in one-inch increments from 24″ to 16.1″ (just over legal minimum). Velocities were measured with a MagnetoSpeed V3 chronograph mounted on arm attached to the stock. This allowed the chrono to be adjusted inwards as the barrel was cut shorter, inch by inch.

For the 6mm Creedmoor cartridge, Bill loaded Hornady 108gr ELD Match bullets over 41.5 grains of Hodgdon H4350 with CCI 200 primers in new Starline brass.

The results were interesting to say the least. Bill reports: “Muzzle velocities ranged from 2,893 ft/sec at 24″ to 2,598 ft/sec at 16″ for a decrease in muzzle velocity of 295 ft/sec. Muzzle velocity changes per inch of barrel length ranged from 6 ft/sec per inch between 20 and 19 inches to 63 ft/sec per inch between 19 and 18 inches. Average velocity change per inch of barrel length was 37.9 ft/sec.”

Bill concludes: “An average drop of 37.9 ft/sec/inch of barrel is fairly significant and is what would be expected with a fast moving 6mm cartridge like the 6mm Creedmoor. While I’m used to seeing 6mm Creedmoors with slightly longer barrel lengths than 24″, when coupled with a sound suppressor the additional length can make moving the rifle quickly more difficult.

I’d suggest staying with longer barrel lengths wherever possible with this cartridge. At shorter lengths, it does give up more performance than its big brother the 6.5 Creedmoor.”

More 6mm Creedmoor Velocity Data from 2017 Cut-Down Test

If you’re curious about 6mm Creedmoor velocities at longer barrel lengths, back in 2017 Rifleshooter completed a 6mm Creedmoor barrel cut-down test from 31 inches all the way down to 17 inches. The test included four bullet types from 95 grains to 110 grains. With the 110gr Sierra MK, velocity at 31″ was an impressive 3110 fps. Surprisingly the velocity didn’t decrease that much for the first few inches. Even at 26″ (a five-inch reduction), measured velocity with the 110s was 3073 fps, a loss of 7.4 fps per inch on average. With a barrel shortened all the way to 20″ however, velocity had dropped down to 2949 fps, a significant (161 fps) loss. CLICK HERE for complete results from that 31″-17″ Barrel Cut-Down Test.

6mm 6.5 Creedmoor rifleshooter.com Bill Barr barrel length cut-down velocity test chronograph Magnetospeed chrono

CLICK HERE for 31″ to 17″ 6mm Creedmoor Barrel Test Report »

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August 20th, 2020

6mm Creedmoor — Barrel Length Velocity Test — 24″ to 16.1″

6mm 6.5 Creedmoor rifleshooter.com Bill Barr barrel length cut-down velocity test chronograph Magnetospeed chrono

Our friend Bill Marr of Rifleshooter.com has done it again — conducted a fascinating 6mm Creedmoor barrel cut-down test that reveals how velocity changes with barrel length. This time Bill started with a 24″ Proof Research stainless steel barrel on a Howa action. Bill says this was a well-used barrel, with over 1800 rounds through it. So, the velocities might be a bit different than a new barrel of similar length. Bill cut the barrel down in one-inch increments. Here are some results from the test:

24″ Velocity: 2893 FPS | 20″ Velocity: 2755 FPS | 16.1″ Velocity: 2598 FPS

CLICK HERE for FULL TEST REPORT on RifleShooter.com »

6mm 6.5 Creedmoor rifleshooter.com Bill Barr barrel length cut-down velocity test chronograph Magnetospeed chrono

6mm 6.5 Creedmoor rifleshooter.com Bill Barr barrel length cut-down velocity test chronograph Magnetospeed chronoFor this latest test, Rifleshooter cut the barrel in one-inch increments from 24″ to 16.1″ (just over legal minimum). Velocities were measured with a MagnetoSpeed V3 chronograph mounted on arm attached to the stock. This allowed the chrono to be adjusted inwards as the barrel was cut shorter, inch by inch.

For the 6mm Creedmoor cartridge, Bill loaded Hornady 108gr ELD Match bullets over 41.5 grains of Hodgdon H4350 with CCI 200 primers in new Starline brass.

The results were interesting to say the least. Bill reports: “Muzzle velocities ranged from 2,893 ft/sec at 24″ to 2,598 ft/sec at 16″ for a decrease in muzzle velocity of 295 ft/sec. Muzzle velocity changes per inch of barrel length ranged from 6 ft/sec per inch between 20 and 19 inches to 63 ft/sec per inch between 19 and 18 inches. Average velocity change per inch of barrel length was 37.9 ft/sec.”

Bill concludes: “An average drop of 37.9 ft/sec/inch of barrel is fairly significant and is what would be expected with a fast moving 6mm cartridge like the 6mm Creedmoor. While I’m used to seeing 6mm Creedmoors with slightly longer barrel lengths than 24″, when coupled with a sound suppressor the additional length can make moving the rifle quickly more difficult.

I’d suggest staying with longer barrel lengths wherever possible with this cartridge. At shorter lengths, it does give up more performance than its big brother the 6.5 Creedmoor.”

More 6mm Creedmoor Velocity Data from 2017 Cut-Down Test

If you’re curious about 6mm Creedmoor velocities at longer barrel lengths, back in 2017 Rifleshooter completed a 6mm Creedmoor barrel cut-down test from 31 inches all the way down to 17 inches. The test included four bullet types from 95 grains to 110 grains. With the 110gr Sierra MK, velocity at 31″ was an impressive 3110 fps. Surprisingly the velocity didn’t decrease that much for the first few inches. Even at 26″ (a five-inch reduction), measured velocity with the 110s was 3073 fps, a loss of 7.4 fps per inch on average. With a barrel shortened all the way to 20″ however, velocity had dropped down to 2949 fps, a significant (161 fps) loss. CLICK HERE for complete results from that 31″-17″ Barrel Cut-Down Test.

6mm 6.5 Creedmoor rifleshooter.com Bill Barr barrel length cut-down velocity test chronograph Magnetospeed chrono

CLICK HERE for 31″ to 17″ 6mm Creedmoor Barrel Test Report »

Permalink - Articles, Bullets, Brass, Ammo, Gear Review, Gunsmithing, Tactical No Comments »
September 5th, 2014

How Joe Hendricks Won the 2014 High Power Championship

Joe Hendricks of Team Remington is the 2014 NRA High Power National Champion. This is Joe’s first National High Power championship, and he accomplished it through a gutsy, come-from-behind victory on the final day. This was no easy win for Joe, aka “Joesr” on our AccurateShooter Forum.

Here’s the story of Joe’s 2014 victory at Camp Perry. One thing that made Joe’s victory even more memorable was that both Joe’s father and Joe’s son were there to witness the win. Three generations of Hendricks men were at Camp Perry to see his achievement. That’s a great thing for a family.

Team Remington Joeseph Hendricks 6CM H1000 Camp Perry High Power Championship AccurateShooter Forum

Down by Too Many Points and Too Many Xs
By Joe Hendricks, Nat’l High Power Champion (2014)
On the last day of the High Power Championship, believe it or not I felt no pressure — because I really didn’t think I had a chance to win it all. I knew the leaders would clean the day and my only hope was that possibly one or two would falter enough to allow me third place. All I was trying to do was shoot Xs, so that I could move past two of the people in front of me and (maybe) secure 3rd place. I started the day tied for third on points with two other competitor, but in fifth place when you figured in X-count.

Yes I was watching the board going into the final day and so many people say “Don’t watch the board!”. However, for me, looking at the board motivates me.

The best I could do at 300 yards was a 200-6X, with nice groups, but not centered. That was not enough Xs and I knew I wasn’t moving up the leader board. I knew that simply shooting a 200 score wasn’t going to cut it and I still had work to do to get onto the podium (i.e. earn third place). At that point I figured I was still tied for third (disregarding X-count).

So I went to the 600-yard line with goal of getting on to the podium. I was shooting for third at that point. I figured maybe with two cleans I could grab third place.

Understand I know my competition and I know I’m shooting against the best High Power marksmen in the world. There were two people who have won this match before and several deserving champions just behind. So at this point, I’m wasn’t giving myself a chance to win — I was hoping to place third.

The first string at 600 yards went well with nothing less than a 10. I shot a normal 200-10X, meaning 10s and Xs were mixed up with no wide shots. Apparently others faltered when I shot clean (all 10s or Xs) — I didn’t know that after the first string at 600 I was actually in the lead….

Click Image to See Full-Size Photo
Team Remington Joeseph Hendricks 6CM H1000 Camp Perry High Power Championship AccurateShooter Forum

Pulling it Together: Five Xs for the Final Five Shots
The second string at 600 yards was strange. I shot five Xs in my first 6 or 7 shots and then ran a string of 10s that were either wide or corner shots. So, after 15 shots, I wasn’t getting better, I was getting worse. I needed to get my act together (and right quickly).

I took a moment to regroup and said to myself: “Stop this. We are not doing this today…” (i.e. we are NOT going to break down with just five shots to go). That’s something I heard Ken Roxburgh said to my son during their team match.

That thought process changed my attitude, and it seemed to relieve the pressure, so I was able to concentrate on every shot. I was re-focused and ready to roll. I know Perry, I know the wind at Perry and I had confidence in my 6CM cartridge to shoot 10s through the final five shots.

That confidence paid off — in the final five shots I broke every shot dead center and every shot came up an X!

I don’t care where you place at Perry, if your final shot is an X you have something to take back for next year. Running five Xs in a row to end Perry is special. But, ironically, I can not say that running five Xs in a row to win Perry is a feeling I can actually remember, because, at the time, I thought I had finished third, not first….

After finishing the last string, I had a 1798 point total. I packed up my stuff, went over to the Remington golf cart, and told Ken Roxburgh that I was fairly sure I had placed third overall.

“Down 13… How About You?”
I then walked down the line and I saw Brandon Green from the USAMU congratulating Norm Houle on winning. I paused for a moment and then walked over to Norm and asked him: “What did you shoot?” Norm replied: “I was down 13, how about you?” I then answered “Down 11″. Norm gave me a huge handshake and then it hit me. I had won.

I was a feet away from my father. I went to him and said I think I won. Pricelessly, Dad said “Won what?” Then it hit him. Literally in tears, He called my mother to report the good news.

At that point I realized this Championship wasn’t my life’s work, it was his. THANK YOU DAD!

My son Joe Hendricks Jr. was in the pits and didn’t yet know about my first-place finish. He is 18 and has his own hopes for a rifle championship someday. When he came back from the pits, I said to him: “You don’t know…” He looked at me and said “Know what?”. I said “I won”, and he asked “Won what?”. Then I told him: “The whole thing.” I have never seen him smile the way he did at that moment.

Next we call my wife on the phone (she was staying in Port Clinton, but wasn’t at the range that day). I tell her I won, and she says “Won what?” Again, I reply “The whole thing … I won the whole thing.” I hear only silence on the phone, then she says “Are you serious?” I reply, “Yes I am” and then there is a long pause, after which she says: “Joe, you aren’t messing with me are you?” I tell her: “No, I’m serious, come out here, you’ll see…” She pauses then says, “OK I will… but if you are messing with me YOU WILL PAY.” My girls say she almost wrecked the car driving out to the range.

So my wife finally shows up at the Remington Team trailer. As she was getting out of the car she says “If you are [fooling] with me I will kill you. Did you really win?” In fact, she asked me three times before she believed it had actually happened.

By this time Ken Roxburgh of Remington (my coach) had also called Carl Bernosky. Carl Bernosky has been a huge part of my shooting since I young. Having Carl be so excited about my win means nearly as much to me as the win itself. What a great day!

Team Remington Joeseph Hendricks 6CM H1000 Camp Perry High Power Championship AccurateShooter Forum

Joe wanted to thank his sponsors Remington and Berger Bullets. The 6CM Cartridge he shoots is a wildcat based on the .243 Winchester. Joes uses slow-burning H1000 powder and he shot Berger 105gr 6mm Hybrids at Camp Perry this year.

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May 8th, 2012

Oklahoma Spring Fun Match with Reactive Targets

reactive targetWe like rifle matches that include reactive targets. As the huge success of the Top Shot TV show proves, it’s fun for both shooters and spectators alike to see targets that break or explode when they are hit. This also provides immediate feedback to competitors, which can help develop good gun handling and aiming.

The 4R Rifle Club of Alex, Oklahoma has a fun match each spring that employs a variety of reactive targets set from 100 yards to 500 yards. This year 36 competitors turned out for the May 5th Spring Shoot. The course of fire consisted of four (4) mini clay pigeons at 100 and 250 yards and four 4″ balloons at 400 and 500 yards. Each competitor was allowed 18 rounds at the bench to break the 16 targets within a 15-minute limit. After the initial go-round, the top six shooters return for a shoot-off.

Dean Morris, Mark Deluia, and Matt Hohnstein all hit every target for “clean” scores of 420, securing spots in the shoot-off. B.J. Baily and Rick Jensen had the 4th and 5th highest scores, but the remaining sixth shoot-off spot required a tie-breaker — a single shot closest to center at 250 yards. Adam Roberts drilled a nearly perfect shot to win the tie-breaker over Tim Mulrine.

The shoot-off proved to be a tight battle between Adam Roberts and Dean Morris. Both men shot perfect scores so the targets were reset again — only this time Adam and Dean were allowed just 9 rounds to score as many hits as possible. When the dust settled, Adam Roberts was the new 2012 Champion and the first repeat winner of this eight-year-old event. Congrats to Adam! Mark Deluia was the Two-Gun Champion, Don Johnston won the Factory Class, and Ross Reeves was top Junior shooter.

4R rifle club alex oklahoma

Equipment Lists for Top Shooters
Adam and Dean both had rifles smithed by Jon Beanland. Adam’s gun was a 6.5 CM with Savage action, Krieger barrel, McMillan stock, and S&B scope. He loaded Berger bullets in Hornady brass with Hodgdon H4350 powder. Runner-up Dean Morris shot a 7mm RSAUM with Kelbly action, Bartlein barrel, PR&T stock, and Nightforce scope. He was shooting Berger bullets with H4350 in Norma brass. Interestingly, the next two shooters also shot 7mm rifles. B.J. Baily ran a straight .284 Winchester, while Rick Jensen had another 7mm RSAUM.

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