Sierra Bullets 6.5 Creedmoor Load Data


sierra-bullets-6-5-creedmoor-diagramTest Specifications/

Firearm Used: Universal Receiver
Barrel Length: 24”
Twist: 1-8’’
Case: Hornady
Trim-to Length: 1.910’’
Primer: Winchester WLR


Developed in 2007 by Dennis DeMille and Dave Emary, the 6.5 Creedmoor is a shortened and improved 30 TC cartridge case that was inspired by the .308 Winchester design.  This short action design was created to maximize case capacity and a wide range of loading lengths, while still fitting in standard short action magazines.  With the correct twist barrel, the versatile 6.5 Creedmoor can take advantage of the wide range of bullet weights available in 6.5mm.  Reloaders should keep in mind that the 6.5 Creedmoor works best with medium to medium-slow powders such as H4350, Varget, Win 760, and RE-17.  The light recoil and adaptability of the efficient 6.5 Creedmoor cartridge has already proven itself in high power, precision rifle series and benchrest competitions.  Couple that with respectable barrel life and its intrinsic accuracy potential and you have a recipe for success which should insure its legacy for decades to come.



2-sierra-bullets-6-5-creedmoor-dataINDICATES MAXIMUM LOAD – USE CAUTION


4a-sierra-bullets-6-5-creedmoor-dataINDICATES MAXIMUM LOAD – USE CAUTION







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Sierra 110 gr Sierra Pro-Hunters in a M1 Carbine

Written by Sierra Bullets Ballistic Technician Gary Prisendorf

I have always enjoyed collecting and shooting old military firearms.  One of my favorites has always been the 30 caliber M1 Carbine.

Though many people will claim they are useless for anything more than plinking, I respectfully disagree.  They are plenty accurate for small game and varmints out to 100 yards or so and I feel it is more than adequate for a home defense/personal protection weapon.

It was never designed to be a powerful long range rifle, it was designed to be a lightweight easy-to-use carbine that had more power and accuracy for troops that would ordinarily be issued a 1911 45 caliber pistol.  Many officers, NCO’s, Tank and Artillery crews were issued the carbine.

I bought my little carbine in 1990 at a local gunshop, at the time I paid $185.00.  Today the price of them has skyrocketed.

My carbine was manufactured by the Inland division of General Motors, which produced over 2.3 million of them during World War 2.  Many companies manufactured the M1 Carbine for the war effort.  Companies such as IBM, Underwood Typewriter, Rock-Ola Jukebox, Saginaw, National Postal Meter, Inland and Winchester who originally designed it, all combined produced some 6.5 million M1 Carbines.

Last weekend I loaded up some ammo with Hodgdon H110 and the Sierra 110 gr. FMJ Pro-Hunter #2105 and went to the range with my General Motors stamped, 1943 M1 Carbine.

First I set up a bunch of clay pigeons at 100 yards and was breaking them fairly easy.  I decided to set up a target and see just how well it would group at that distance.  I think it did fairly well, I shot a 5 shot group of 2.541”.


The M1 Carbine is a lot of fun to shoot.  Lightweight, low recoil and has a 15 round magazine, what’s not to like?

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Why Does Reloading Data Vary?

 Written by Sierra Bullets Ballistic Technician Paul Box

Everyday we get calls on our 800 line about why does data vary from one manual to another? It’s an honest question and we’re going to take a deeper look into why this happens. The short answer is tolerances, but let’s see what this means.

Everything in this business has a tolerance to stay within. Let’s look at powders first and use IMR-4064 as an example. When the powder manufacturers make a lot of powder, it will be tested  to make sure the burn rate is right. Again, just for example let’s say it must fall between one and ten on a scale. The first lot comes in at eight and the second lot at three. They are both within spec, but the second lot is slightly faster.


Brass will be the same way. There will be differences in case weight from one maker to another and this will influence internal capacity.

Primers will have a difference in both flame duration and flame temperature.  Again, this will influence pressures also.


Looking at rifles, we see the same thing. Chambers can vary slightly and still be in SAMMI specs. Throat lengths will not only vary from one rifle maker to another, but even the same rifle manufacture will have a difference depending on the reamer that was used. It’s not unusual to see one rifle in .308 vary by .035” from another of the same maker. This also influences max loads.

So what does all of this mean? If one manufacturer shoots data and just by sheer chance has some of their components and their rifle on the upper end of specs, then another manufacture by sheer chance has theirs on the minimum side, we can see a big difference on a max load between different manufactures. On a big cartridge like a 300 Win mag and a slow powder like RL-22 I’ve seen 2.0 grs. difference on a max load between the different manufacturers. So, who is right? Actually they both are. The data from each manufacturer is correct for the components they are using in their rifle.

For many years we have all read in reloading manuals as well as countless magazine articles about the importance of starting low and working up. This is sound advice. Remember, you can always go up.

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Missouri State Champion FTR

Written by Sierra Bullets Chief Ballistician Tommy Todd









Greg Meredith (right) of the Missouri Shooting Sports Association presenting the State Champion Award for F-Class FTR division to Sierra Bullets Chief Ballistician, Tommy Todd (left).

Recently the Missouri Sports Shooting Association (MSSA) held an awards banquet for the 2016 shooting season. I was lucky enough to have won the State Champion award for F-Class FTR division. I shot well enough in last year’s match to be the highest scoring Missouri resident and thus qualified for the State Champion.

F-Class has two classifications of shooters and equipment, F-Open allows the use of a front rest and rear sandbag and a weight limit of 22 pounds. FTR (F-Class Target Rifle) is limited to 18 pounds and you must use a bipod to support the rifle, rear sandbags are also allowed.


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See Your Photo Featured on Instagram

Did you know Sierra Bullets uses Instagram?  Check us out at Sierra_Bullets and join over 8,000 folks gathering every day to look at cool pics and talk about shooting and reloading. Would you like to see a photo of your reloading bench, latest target, trophy, day at the range, or new box of bullets featured?  Tag us or email the photo to us at

And don’t miss these recent favorites:


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Reloading: Saving Money or Not?

Written by Sierra Bullets Ballistic Technician Philip Mahin   

*Please note I have corrected the miscalculation on the primer cost on the updated version below. 

There is no getting around the fact that shooting is an expensive sport if you do enough of it. As a handloader, my drive to start was to save money while shooting something no longer offered in factory ammo. This raised the question, how much money am I really saving? We can go through this on an individual round count basis.

All of these prices were taken from a single, reputable mail order distributor and were calculated from their non-sale prices to keep everything on a level playing field. To remain on that level playing field, let’s not worry about sales tax or shipping costs and enjoy the fact that this reloading equipment was an inheritance (mine wasn’t but oh well). Our base line is a 308 Winchester cartridge loaded with Sierra’s #2145 165gr SBT GameKing® and factory ammo is listed at $32.79 for 20 rounds. Since reloading components usually run on a 100 count standard, let’s multiply that number by 5 to get $163.95 for 100 rounds (or $1.64 per round). So by using this $1.64 per round standard, can we shoot the same thing for less money by reloading? Let’s find out.

The same distributor sells reloading components but we will need to take into account certain facts like powder is sold by the pound so we will need to convert the cost. A pound translates to 7,000 grains so if your firearm likes 40 grains of brand X to propel this bullet, 100 rounds would take 4,000 grains to fill them. If the price of powder was $26.99 per pound, then 4,000 grains of it would cost $15.42 or so for 100 rounds.  Bullets were priced at $31.99 and match primers were priced at $4 per hundred. This only leaves the brass to price and by using the same brand as in the factory ammo, they were listed at $25.49 per 50 so $50.98 per 100 count. Let’s add them up to get $102.39 per 100 rounds or $1.02 or so per round. Compared to the factory round price, we’ve saved $61.56 or $0.62 a round.


Here is the next thing we need to take into account and that is we can reload the brass more than one time. Let’s figure that we can reload this brass 5 times and calculate for a 500 round count. Our cost of factory ammo went up to $819.75 and even though that is a lot of hunting rounds, it wouldn’t be out of line to have purchased them through a lifetime of hunting. Our cost of reloading, on the other hand, was reduced by $50.98 per hundred rounds because we are reusing the same brass over and over again. This makes reloading the next 400 rounds total $205.64 or $51.41 per hundred so in addition to our original cost of $102.39, this would give us a $308.03 total for 500 rounds. I don’t know about you but I can use that $511.72 we just saved to invest in another 500 rounds. By the way, if we could reload the brass another 5 times, the cost of 500 rounds would only be $257.05 for a total of $565.08 for 1,000 rounds. Compared to the $1,639.50 we would have used for factory ammo, we would have saved enough ($1074.42 in total) to purchase another firearm.  If I really wanted to gain some brownie points, I would take my wife out in style and maybe still have enough left over for lunch tomorrow. Good luck making the right decision on that last part!

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Callin’ All Critters

Written by Ballistic Technician Duane Siercks

Back last fall I received a phone call from a customer, Paul, asking for information   concerning a particular rifle he had purchased. As the conversation moved along, we visited at length about this rifle.  I mentioned that I had purchased one also and was interested to hear how his was doing as he worked up some loads, as I had not yet had the opportunity to work with mine. He also mentioned that he did a lot of predator control by calling them in. As this has always been an interesting subject for me, I questioned him further. He proceeded to give me a lot of pointers and information. The time came that the call ended with a promise he would certainly get back to me about his load development results.

A couple of weeks or so later, he called back with some excellent news on the results he was getting from the information that I had passed along. As we were getting ready to end the call he mentioned an event that he was hosting in a couple of months. As I got more info from him, he wanted to know if I could attend as a company representative. I was hooked. I wanted to see what this was all about. The date was set for January 15, 2017.

As the time approached, we were slated to receive the Icegeddon event with several inches of ice and sleet predicted. Paul phoned me and sadly stated that he had to cancel, but he was re-scheduling for February 4th and 5th. I told him I would be there.

The event was held on private property just outside of Goreville, Il. On the morning of the 4th we arrived to a brisk morning temperature of 11 degrees. A brief event meeting was held giving event material and instructions.  At the official start time, 37 two-man teams departed to begin the hunting phase of the Southern Illinois Predator Challenge 2017. We were able to visit with many of the teams and get more familiar with the type of hunting that they do. The art of calling a coyote to various different calls and vocalizations is quite a feat. The hunt would end the next day, (Feb. 5th) at which time the participants would return with the coyotes that had been harvested.  Official check-ins began and winners were determined. There was an after-the-hunt chili dinner given by the host at a club building where the winners were announced, door prizes awarded and recognition was given to the event sponsors of which Sierra Bullets was proud to be part of.

The hunters harvested 76 coyotes, with the winning team taking 9, second taking 7, third and fourth place winners each harvested 5 coyotes each, with the winners being placed by the heaviest coyote of their harvest.

The following is an excerpt of the letter that I received after the hunt from the event host Paul Browne (February 21, 2017)

The 3rd Annual Southern Illinois Predator Challenge (SIPC) held on February 4th and 5th of 2017 was again a huge success!  We could not have done this without the support from our generous sponsors this year.  We had well over 100 who gathered, looking forward in anticipation to Sunday’s prize giveaways!

Weather brought on a challenge when the original dates had to be postponed due to an ice storm in January, but the weekend in February worked out perfectly.  There were 74 participants that came to the event, 3 of which were youth who hunted alongside a parent.  76 coyotes were harvested from approximately 43 counties covering over 2900 square miles.  We had hunters from all over Central/Southern Illinois, as well as some from Kentucky.  SIPC was proud of the exposure that we received this year and the growth from last year’s event.

1st place went to Justin Roepke/Joseph Wirth (9 coyotes), 2nd place Jason Graff/Louis Glidewell (7 coyotes), 3rd place Wayne Shaw/Clint Shaw (5 coyotes), 4th place Kevin Edmonds/Matt Morgan (5 coyotes), 5th place Tyler Michael/Dylan Sanders (4 coyotes), Biggest coyote 39.55 lb Clayton Gulley/Lee Roberts.  1st, 3rd & 5th places used night vision & thermal units. 2nd & 4th places used red lights though most of them coming during daylight hours.

We would like to specially thank Sierra Bullets for their on-sight support ballistic technician Duane Siercks.  Duane was very helpful in answering questions regarding the product with the participants. As SIPC continues to grow we would like to see more on-sight support from our sponsors as this gives more of a personal interaction with the company helping promote product.

Our plan for next year is to increase our number of participants and to make it easier for out-of-state hunters.  It is our intent to forgo the pre-contest meeting on Saturday morning. Registration & rules will be done on-line through our group page. This will decrease the amount of travel on those from out of state to one trip on Sunday to the awards/prize giveaway.  We are confident this will boost attendance for SIPC 2018 to record levels.

Again, thank you for your continued support.  The success of SIPC would not be possible without your sponsorship.  We look forward to helping to promote the sponsors of SIPC throughout the year.

Paul Browne
Founder of SIPC

I received an e-mail from Paul a couple of days ago with a picture of his son, CJ Browne, with his first coyote harvest.



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Velocity Increase In New Gun Barrels

Written by Sierra Bullets New Product Development Manager Mark Walker

In a previous post, I discussed a couple of methods to tune a load to your barrel to help achieve the best accuracy possible. People most often work on load tuning if they get a new rifle or have a different barrel installed. In both instances, the barrel is new and has not been fired very much. According to most competitive shooters, this is the most accurate your barrel will ever be, so getting it tuned and shooting accurately is a priority.

Even though after you work up a load and your new barrel is shooting great, a lot of shooters notice that at around 100 to 150 rounds their rifle may stop shooting as accurately. I had this happen to a rifle and I was confused as to why something that worked so well to begin with would all of a sudden quit shooting. I decided to break out the chronograph to do another load work up to see what was going on. To my surprise, the velocity had increased around 80 fps over the original velocity! After performing another ladder test and adjusting the seating depth, the rifle was once again shooting well.

There are several thoughts on why this may happen, however, you can rest assured that it does happen. One thought is that as the barrel breaks in, the tooling marks in the throat of the chamber smooth out and allow less resistance to the bullet as it exits the bore thereby increasing speed. Another idea is that the throat area starts to get a little rough which in turn causes more resistance which increases pressure and therefore more velocity. I’m sure there are some out there who have a better understanding as to why this happens, but it can definitely affect the accuracy of your rifle. So be aware and never be afraid to rework a load to keep your rifle in tune.

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