Reloading: Cartridge and Bullet Concentricity Tests for Hunting

 If you hunt and shoot beyond 200 yards, bullet and brass concentricity (wabble) can matter. Experienced long range shooters call it “runout.” I have shot at 600 yards at targets on occasion but rarely checked for concentricity/runout till prepping for this falls moose hunt. 

Accordingly, I just purchased a Sinclair Concentricity gage to check for runout and to see groups improve. The idea is to eliminate fliers! But that required me to do more brass case prep too. That must have helped as well. Some swear by it, some don’t.

l_749007305_1.jpg

First tests were for the case neck on those I had already full length resized a week earlier.

 

After checking 30 cases, half were at .003″ or greater runout (wobble), half were less.  Some long range hand loaders suggest that 0.003″ is the max runout.

What to do?

I ran these .003 cases back through my full length sizing die a few times, rotating 90 degrees and retested. Runout (wobble) improved to .0015″ or less.

Next is to load some bullets and retest for bullet runout.

All bullet retests for runout were 0.003″ or less. Nice!

Doing this test suggests that the bullet is better aligned to enter the rifling nearer to parallel. So lets see some targets…

Below this Nosler 168g ABLR group shrunk from 2 inches to 1 1/8 inch group at 150 yards  is an example of what the Sinclair Concentricity Gage did for me.  Sub-MOA groups below!

 

The next picture below is of the same 168g ABLR bullet at 150 yd distance but the OAL was longer (0.020 off the lands).

The 1/4 inch difference in grouping photos was probably me. But you can see these are both sub-moa groups.

Lesson learned! To establish a best in class reloading process with or without the gage.

Good Shooting!

 

© Copyright 2023 All Rights Reserved

 

 

 

 

 

 

 

 

Reloaders- Smokeless Powder Burn Rate Charts Aid in Alternatives

Not finding your favorite powder for sale?  This chart can help find powders closest to yours. I did that with my alternative to Reloader 22 and found Viht N560 and it worked great. Nosler listed it in their manual. 

Reloading safety is of prime importance thus you must begin a new powder at starting loads and work up. The internet should give some start load data sources if you search your caliber and alternative powders.

All reloading manuals list alternative powders but there are some older reloading manuals that are not current in new state-of-the-art powders. 

IMR published a burn rate chart PDF below and includes many brands.

Check it out.

 

https://imrpowder.com/wp-content/uploads/2017/02/burnratecolor.pdf

 

Adding a Timney Trigger to my Browning X-Bolt Speed

Removing the two mounting bolts, you can pop out the barrel and action with some finagling and prying. It is a tight fit. 

Here is the Timney Trigger below.

Below there are 2 pins that hold the trigger in the half moon cutouts in the barrel. Use a 1/16 punch to remove the two pins and the trigger will come off. 

The part I did not expect is that the Timney did not just drop in. The forward slot was too narrow to fit in the half moon cutout. I had to grind off a few thousandths from the trigger housing to widen the slot with a Dremel tool. 

Below you can see my Dremel tool that I used to grind the forward pin housing a bit. Took me 20 minutes to grind and fit it. Not overly hard with the right tool. Some triggers drop in to those slots in videos. 

Below is the Timney trigger installed. The whole process took me about an hour or less.

I put my Lyman Trigger test gauge on the Timney and as expected it measured 3 pounds almost. Two pounds fifteen point nine ounces. I tested again at 3 pounds exact. Test the safety slide to be sure it works. Mounting bolts need torque to 35 inch-lbs.

Below is a video that helped me.

 

Good Shooting.

©Copyright 2023 

 

 

 

 

Basic Rifle Cartridge Reloading Dies

Decades ago, I started out by shooting a few boxes of .270 Winchester ammo and kept the brass. This once fired ammo case is a great start to reload. But you need dies to reform brass, add a primer, powder and press the bullet.

For me, reloading is the ultimate satisfaction of doing-it-yourself like DIY.

Like chipping a broadhead from a piece of stone and killing game by your own hand as our ancestors did is the ultimate in satisfaction. 

The component of a cartridge requires a brass case to hold the powder, primer and bullet.

The brass needs to be “resized” in reloading dies, spent primer removed and replaced (left die) and a bullet seating die (right).

Full-Length Die Set - Group A - Popular Rifle Cartridges

 But new brass can be purchased too. See image below.

A reloading press and dies are essential. There are several companies who cater to reloaders.

A basic bottle-neck die set consists of two dies, one to resize the case and another to press the bullet into the case. See Photo above.

Every cartridge caliber needs its own die set. Die set costs to load for hunting typically cost less than $70.00 for a set.

Reloading for long distance hunting and shooting can be more exacting and cost much more. Like this Redding Die Set with micrometer bullet seating.

Redding Premium Series Die Sets

 

I had my first Savage .270 Winchester and loaded it with an RCBS Press and dies 40 years ago.  I use it to this day and saved untold dollars and Did-It-Myself…to my great satisfaction. I hunted Africa with my custom loads.

The key to good reloading technique is to read reloading manuals and guides, watch reloading video’s on you-tube. Listen and pay attention to areas of safety. Inspect your brass and spent primers for gas leaks, case damage of older brass. RCBS offers a free downloadable reloading guide.

https://www.rcbs.com/rcbs-downloadable-guide.html

Companies like Nosler, Hornady, Speer, Lyman, and several others sell reloading manuals. My two favorite manuals are Nosler and Hornady. Don’t forget all the videos on the web. 

Check-it-Out

 

 

 

Smokeless Gunpowder Shelf Life

Recently, I hand-loaded some Alliant Reloader Powder I had in my lower cool dry garage cupboard.

Reloder 19

It was for my 7mm Rem Mag rifle and discovered the powder lost some of its potency. It was an opened can and had about a half pound left. All of the loaded ammo fired fine but lost a couple hundred feet-per-second from published data. This powder had very little solvent smell and looked fine.

I was looking for a near max load.

I loaded rounds later in steps to see what I could wring out and did so just fine.

I would buy a new pound of Alliant Powder as soon as it is available and consider quickly using the older powder. 

I also loaded some rounds with a new can of IMR powder which had a potent solvent smell. These rounds followed published data very well. 

New powders often have a solvent Acetone like smell and over time the opened can will lose the solvent smell. Over longer periods, it will degrade to an acidic off smell.  When powder has that off smell it is time to dispose of the powder. Below is what Alliant says about storage and handling of modern powder.

https://www.alliantpowder.com/getting_started/safety/storage_handling.aspx

Another article I liked below.

https://www.rifleshootermag.com/editorial/how-to-determine-gunpowder-shelf-life/83922

 

Good Shooting!

 

Browning X-Bolt Factory Trigger Adjustment?

First, I like my new Browning X-Bolt rifle, but some of you know I had difficulty cleaning the red sealant out of the adjustment screw Allen wrench hole a few weeks back. Thinking my 2mm wrench stripped the hole. But I revisited the adjustment with a tool that I can put pressure on to get deeper in the Allen socket hole.

 

And it worked. The screw turned.

Thinking, now I can adjust it down to 3 pounds, but the adjustment screw did not lower the trigger to 3 pounds in fact just an ounce below 4 pounds, no matter what I did. And I am pretty good with tools!

Accordingly, frustrated I reassembled the trigger base and shot some snap caps for how the trigger felt. Nope, not much change. They say you can buy an adjustment spring and replace the existing trigger spring but it is not an easy job.

For me, I will test a Timney trigger when it arrives. It will adjust 1.5 to 4 lbs. Mine will be set at the factory to 3 pounds.

The only downside is that it costs around $200.00 and you have to take the stock off, remove and replace the trigger and proof the safety latch works. The Timney will no longer lock the bolt however. Many shooters see this as a minor loss.

https://timneytriggers.com/browning-x-bolt/

More Soon!

Shooting a scoped semi-auto .308 or 6.5 Creed AR for Hunting?

Shooting a semi-auto .308 or 6.5 Creedmoor AR for hunting can be done and done well. An AR example below. I prefer a bolt action but hey…this works. A great wild boar rifle too, where southern and western farmers are overrun with them.

Savage Arms MSR10 Hunter Overwatch 6.5 Crd Semi-Automatic AR-10 Rifle, Matte Camo - 22994

 

The semi-auto AR 10 platform for hunting is a do-it-all rifle for protection, hunting game, and predators.

I personally prefer a bolt action rifle but in the right hands, this rifle works. In brown bear country, this reliable rifle gives comfort to folks living off-grid as does a 44 mag pistol as a side arm.

Ranchers use this tool like they use a hammer. If you have a nail, then the hammer is the right tool. If you have a brown bear sniffing in your direction, having a large clip of .308 cartridges at the ready can be comforting. Or live in Texas or Florida where they are overrun with pigs.

I am no expert on AR Rifles for hunting big game but I did find a great article on the web by Outdoor Life.

https://www.outdoorlife.com/photos/gallery/guns/rifles/centerfire/2011/11/20-best-semi-automatic-rifles-big-game-hunting/ 

Check it out, they are fun to shoot.

 

 

Browning X-Bolt Speed – Nosler 168g ABLR w/ IMR 4831 Groups – Updated 2/2/23

As you may know, I have been working up hand-loads for my moose hunt and finding the Nosler 168g ABLR reaching over 3000 fps with IMR 4831. But the question is, with what accuracy or groups?

Well, I shot this group below and it looks like a tight 3/4″ except for the flyer. I shot the third shot in the upper right target and extrapolated its position on the string below. Why I shot that upper right target? Because I wanted a smaller target as a focal aim point.

But it needed to be repeated in the second target below for me to validate it. The trigger is a heavy 4 lbs. but I was able to get used to where it breaks. The thin mountain barrel does heat fast and after 3 shots to warm it, it begins to string. 

I repeated the same shots a week later with all the same components at 100 yards. The first 3 shots group 3/4 ” from a cold barrel and the 4th shot drops an inch. I know that a lighter trigger may also help. But overall, I was very pleased with the cold shots for hunting purposes.

Tests continue Using my Labradar

I loaded some 168g ABLR’s with hot H1000 Powder to compete with the IMR 4831. See below low left and right 100 yd 3 shot cold barrel groups with extreme spread of 78 fps an 2 inch groups. The IMR 4831 wins!

I did shoot 168 ABLR today for a third bench rest group for the IMR 4831 and Statistics. Below this group was 1 1/4 inches. Shown below with associated Labradar Stats with Extreme Spread of 14.34 fps and a Std Deviation of 8.17. Very nice indeed!

Labradar Report for IMR 4831

Device ID LBR-0028541                                      
                                                             
Series No 4                                             
Total number of shots 3                                 
                                                             
Units velocity fps                                         
Units distances yd                                         
Units kinetic energy ft-lbf                                
Units weight grain (gr)                                    
                                                             
Stats – Average 2937.25 fps                                 
Stats – Highest 2946.69 fps                                 
Stats – Lowest 2932.35 fps                                  
Stats – Ext. Spread 14.34 fps                               
Stats – Std. Dev 8.17 fps                                   
Shot ID V0 V25 V25 V50 V75 V101 Ke0 Ke25 Ke25 Ke50 Ke75 Ke101 Proj. Weight Date Time
1 2933 2893 2893 2852 2814 0 3207 3120 3120 3034 2953 168 2/2/2023 13:01:22
2 2932 2882 2882 2841 2801 0 3207 3098 3098 3011 2925 168 2/2/2023 13:02:44
3 2947 2907 2907 2868 2829 2788 3238 3151 3151 3067 2984 168 2/2/2023 13:04:08

 

Interestingly, I did note that a drop in outside temperature affects ignition and velocity. Last week I shot at 37degrees F and MV avg was 3003. Today at 26 degrees F,  MV avg was 2937 a drop of 70 fps. At 600 yards that equates to a drop of 4 inches on a moose. I’ll keep that in mind!

More Soon…

© Copyright 2023 All Rights Reserved.

 

Big Game Hunting Rifles Are Far More Accurate than most Hunters

Most all rifles shoot far more accurate than the hunter, but out in the field, things can happen fast. The hunter must be accurate and ready.

The honest truth is, shooting off a bench at a bullseye is not hunting…it is target shooting. 

In reality, accuracy is, for the most part, in the hands of the hunter, not necessarily in the rifle. It is common to see hunters shoot MOA or even sub-MOA bench rest groups with todays rifles and be happy, ready to hunt. Right? Not really! 

We must practice how we are going to hunt. Hunters that do not prepare physically out in the field, including me, or shoot their rifle enough to know it well, are kidding themselves.

For me, it is a self talk to get my butt to the range regularly, shoot standing off a tripod rest or offhand burning powder and sending bullets downrange. Thus having an intimate relationship with your rifle, its recoil and trigger time.

Once your rifle is sighted-in, it is time to get you “the hunter” sighted-in away from the bench. 

It is best to shoot at a target that does not have a bullseye, after all deer and bear do not have a bullseye on them. 

 A paper plate target can help give you some focus to keep bullets on it.   I often purchase near life size paper animal targets to put my crosshairs on. It helps greatly or create a cardboard left or right facing shoulder/chest to aim at. What if the game is facing you, and that is your only shot opportunity. Are you ready? 

Good Hunting!

 

 

 

Browning X-Bolt Speed 175 grain Nosler AccuBond Long Range Tests Begin

If you read my first articles on my Browning X-Bolt Speed, I was eager to shoot some Nosler 175g ABLR’s in my new rifle. I had hoped they would group well for long range moose hunting even with 9.5 twist rate.

 

This week I shot several rounds. Initial groups were just over 1 inch. The X-Bolt Trigger set by the factory at 4 lbs. is a bit too stiff for me, and a pain to try to adjust. I will shoot more this next week. I did shoot a single “cold bore” at 100 yards and then moved the target to 150 yards and shot “cold bore” again with the 100 yard zero. I expected the bullet to drop a bit. It fell only one inch, as expected. Nice! This initial testing with 175g was very encouraging. 

 

 

I hand loaded the bullet with Reloader 22 at 62 grains, (COL 3.24), giving a published estimate of over 2900 fps with a 24 inch barrel. The X-Bolt has a 26 inch barrel. I estimate a 50 fps improvement but will chrono some next week for real data.

Below is the JBM ballistic chart for this bullet if it’s muzzle velocity was 2950 fps. Energy at 600 yards is over 1800 ft-lb and velocity is over 2100 fps. Recoil is 24 ft-lbs. Felt recoil is much less, maybe half, with the great recoil pad on this rifle. 

Very impressive start!

 

 

Trajectory
Input Data
Manufacturer: Nosler Description: Accubond Long Range Spitzer (G7)
Caliber: 0.284 in Weight: 175.0 gr
Ballistic Coefficient: 0.364 G7 (ASM)
Muzzle Velocity: 2950.0 ft/s Distance to Chronograph: 0.0 ft
Sight Height: 1.50 in Sight Offset: 0.00 in
Zero Height: 0.00 in Zero Offset: 0.00 in
Windage: 0.000 MOA Elevation: 0.000 MOA
Line Of Sight Angle: 0.0 deg Cant Angle: 0.0 deg
Wind Speed: 10.0 mph Wind Angle: 90.0 deg
Target Speed: 0.0 mph Target Angle: 90.0 deg
Target Height: 40.0 in
Temperature: 40.0 °F Pressure: 29.92 in Hg
Humidity: 50 % Altitude: 0.0 ft
Vital Zone Radius: 5.0 in
Std. Atmosphere at Altitude: No Pressure is Corrected: Yes
Zero at Max. Point Blank Range: No Target Relative Drops: Yes
Mark Sound Barrier Crossing: No Include Extra Rows: No
Column 1 Units: 1.00 in Column 2 Units: 1.00 MOA
Round Output to Whole Numbers: No
Output Data
Elevation: 3.400 MOA Windage: 0.000 MOA
Atmospheric Density: 0.07925 lb/ft³ Speed of Sound: 1095.8 ft/s
Maximum PBR: 370 yd Maximum PBR Zero: 313 yd
Range of Maximum Height: 171 yd Energy at Maximum PBR: 2348.1 ft•lbs
Sectional Density: 0.310 lb/in²
Calculated Table
Range Drop Drop Windage Windage Velocity Mach Energy Time Lead Lead
(yd) (in) (MOA) (in) (MOA) (ft/s) (none) (ft•lbs) (s) (in) (MOA)
0 -1.5 *** 0.0 *** 2950.0 2.692 3381.0 0.000 0.0 ***
25 -0.7 -2.8 0.0 0.1 2915.4 2.661 3302.2 0.026 0.0 0.0
50 -0.2 -0.4 0.1 0.2 2881.0 2.629 3224.8 0.051 0.0 0.0
75 0.0 0.0 0.2 0.3 2846.8 2.598 3148.6 0.078 0.0 0.0
100 -0.0 -0.0 0.4 0.4 2812.8 2.567 3073.8 0.104 0.0 0.0
125 -0.3 -0.2 0.7 0.5 2779.0 2.536 3000.3 0.131 0.0 0.0
150 -0.9 -0.6 1.0 0.6 2745.3 2.505 2928.1 0.158 0.0 0.0
175 -1.7 -0.9 1.3 0.7 2711.9 2.475 2857.3 0.186 0.0 0.0
200 -2.9 -1.4 1.8 0.8 2678.7 2.444 2787.7 0.213 0.0 0.0
225 -4.4 -1.8 2.3 1.0 2645.7 2.414 2719.4 0.242 0.0 0.0
250 -6.1 -2.3 2.8 1.1 2612.9 2.384 2652.4 0.270 0.0 0.0
275 -8.2 -2.9 3.4 1.2 2580.3 2.355 2586.6 0.299 0.0 0.0
300 -10.6 -3.4 4.1 1.3 2547.9 2.325 2522.1 0.328 0.0 0.0
325 -13.4 -3.9 4.8 1.4 2515.8 2.296 2458.9 0.358 0.0 0.0
350 -16.5 -4.5 5.6 1.5 2483.8 2.267 2396.9 0.388 0.0 0.0
375 -19.9 -5.1 6.5 1.7 2452.1 2.238 2336.1 0.418 0.0 0.0
400 -23.7 -5.7 7.4 1.8 2420.7 2.209 2276.5 0.449 0.0 0.0
425 -27.9 -6.3 8.5 1.9 2389.4 2.180 2218.1 0.480 0.0 0.0
450 -32.5 -6.9 9.5 2.0 2358.4 2.152 2160.9 0.512 0.0 0.0
475 -37.4 -7.5 10.7 2.2 2327.6 2.124 2104.8 0.544 0.0 0.0
500 -42.8 -8.2 11.9 2.3 2297.0 2.096 2049.9 0.576 0.0 0.0
525 -48.5 -8.8 13.2 2.4 2266.7 2.069 1996.2 0.609 0.0 0.0
550 -54.7 -9.5 14.6 2.5 2236.6 2.041 1943.5 0.642 0.0 0.0
575 -61.3 -10.2 16.1 2.7 2206.8 2.014 1892.0 0.676 0.0 0.0
600 -68.4 -10.9 17.7 2.8 2177.2 1.987 1841.6 0.710 0.0 0.0

 

10-Jan-23 07:21, JBM/jbmtraj-5.1.cgi

 

More to come…