July 20th, 2018

Try Rotating Cases During Bullet Seating to Reduce Run-Out

Bullet Seating Reloading rotate cartridge Run-out TIR

Here is a simple technique that can potentially help you load straighter ammo, with less run-out (as measured on the bullet). This procedure costs nothing and adds only a few seconds to the time needed to load a cartridge. Next time you’re loading ammo with a threaded (screw-in) seating die, try seating the bullet in two stages. Run the cartridge up in the seating die just enough to seat the bullet half way. Then lower the cartridge and rotate it 180° in the shell-holder. Now raise the cartridge up into the die again and finish seating the bullet.

Steve, aka “Short Range”, one of our Forum members, recently inquired about run-out apparently caused by his bullet-seating process. Steve’s 30BR cases were coming out of his neck-sizer with good concentricity, but the run-out nearly doubled after he seated the bullets. At the suggestion of other Forum members, Steve tried the process of rotating his cartridge while seating his bullet. Steve then measured run-out on his loaded rounds. To his surprise there was a noticeable reduction in run-out on the cases which had been rotated during seating. Steve explains: “For the rounds that I loaded yesterday, I seated the bullet half-way, and turned the round 180 degrees, and finished seating the bullet. That reduced the bullet runout by almost half on most rounds compared to the measurements from the first test.”

READ Bullet Seating Forum Thread »

run-out bullet

run-out bullet

Steve recorded run-out measurements on his 30BR brass using both the conventional (one-pass) seating procedure, as well as the two-stage (with 180° rotation) method. Steve’s measurements are collected in the two charts above. As you can see, the run-out was less for the rounds which were rotated during seating. Note, the change is pretty small (less than .001″ on average), but every little bit helps in the accuracy game. If you use a threaded (screw-in) seating die, you might try this two-stage bullet-seating method. Rotating your case in the middle of the seating process won’t cost you a penny, and it just might produce straighter ammo (nothing is guaranteed). If you do NOT see any improvement on the target, you can always go back to seating your bullets in one pass. READ Forum Thread..

Permalink Bullets, Brass, Ammo, Reloading 5 Comments »
July 20th, 2018

The 6mm-223 — A Wildcat Worth Considering

6mm 223 sinclair

Intro: Ron Dague wanted a new gun that was similar to his trusty .223 Rem rifle, but which fired 6mm bullets. There is a superb choice of bullets in this caliber, and Ron found that the 95gr Berger VLD could be driven to a healthy 2,604 fps by the small .223 Rem case. This 6mm wildcat based on the common .223 Rem offers excellent accuracy and very low recoil — something very important in the cross-the-course discipline. In addition, Ron’s 95gr load with Reloder 15 delivered an ES of just 4 fps over ten shots. That exceptionally low ES helps achieve minimal vertical dispersion at 600 yards.

6mm 223 Across the course McMilland stock Ron Dague Sinclair InternationalBy Ron Dague, Sinclair Reloading Tech
From Sinclair’s The Reloading Press

I already had a .223 Remington match rifle, and I wanted the 6mm-223 to be as close to the same as I could make it. I installed the barreled action in a wood 40X stock to work up load data and work out any magazine feeding issues. While I was working on that, I looked for a McMillan Baker Special stock and finally found one to finish this project. I bedded the action and stock, then took the rifle to the range to check zeros on the sights and scope. I was surprised that I didn’t have to change anything on the sights. I thought changing the stock would cause sight changes. The thought went through my head, “Maybe the 40X stock isn’t all that bad”.

Here’s line-up of 6mm bullets. The Berger 95gr VLD is in the middle.
berger 6mm bullet hornady sierra line up 6mm 233

I took the new rifle to the first match of the year, a National Match Course match, and my off-hand score was 83, rapid sitting 95, rapid prone 95, and slow fire prone 197 — for total aggregate 470. This may not be my best work, but on match day the wind was blowing about 15 mph and the temp was around 40° F, with rain threatening. This was a reduced course of fire — we shot at 200 and 300 yards on reduced targets.

I used 70gr Berger bullets for this match, loaded in Remington brass with 25 grains of VihtaVuori N540 and Federal 205M primers. When I worked up loads for this rifle, N540 gave the best accuracy with the best extreme spread — 2,950 fps with an extreme spread of 20 fps on a 10-shot string. The load for 600 yards was with a 95gr Berger VLD bullet, with 23.0 grains of Reloder 15, Lapua cases, and the same Federal 205M primers. This load is 2,604 fps, with an extreme spread of 4 fps over a 10-shot string. I’ve shot this load at several 3×600 yard matches, and the accuracy has proven to be very good. At the last 3×600 match, my scores were as follows: 199-10x and 198-11X with scope, and 193-10X with iron sights. Best 600-yard score so far with iron sights was 198-12X.

6mm-223 Rem Rifle Specifications: 700 BDL action and floor plate, Bartlein 6mm 1:8″ twist, McMillan Baker Special stock in Desert Camo, Centra front and rear sights, Ken Farrell bases with stripper clip guide, Sinclair hand stop, and Jewell trigger. Gunsmith Neil Keller helped me with the metal work and instructed me on the action work and re-barreling.

Permalink Bullets, Brass, Ammo, Reloading 4 Comments »
July 20th, 2018

Black Rifle Bargains — $125 Rebates on Bushmaster and DPMS

Bushmaster DPMS Rebate July 2018 Mid-year special sale $175

Looking for your first black rifle, i.e. an AR-platform semi-auto? Now is a great time to buy. Gunmakers stepped up AR production dramatically in 2015-2016, to satisfy high demand by citizens who feared that a Democratic Presidential victory would result in bans on semi-auto rifles. Well Hillary Clinton lost, so the panic buying ended. That means there is an over-supply of ARs at this time. So AR manufacturers are cutting prices and offering significant money-back rebates.

Bushmaster Rebate Form | Bushmaster Rebate Information Page

Perhaps the most attractive AR offers right now are the Bushmaster and DPMS Mid-Year Rebates. You can save $125.00 on the most popular Bushmaster and DPMS models. Bushmaster QRC rifles are $75 off, while the DPMS Oracle models (both .223 and .308) are $50 off.

You will want to act soon to qualify for these Mid-Year promotions. You have two more weeks to buy — Both Bushmaster and DPMS Rebate programs end July 31, 2018.

Bushmaster DPMS Rebate July 2018 Mid-year special sale $175


DPMS Rebate Form | DPMS Rebate Information Page

Bushmaster DPMS Rebate July 2018 Mid-year special sale $175

DPMS/Panther Arms makes a wide variety of rifles, including AR10-type rifles that handle the .308-Win family of cartridges. DPMS’s GII Series is an AR10 evolution with lighter weight and more AR15 parts interchangeability. DPMS claims the GII is “the lightest, most reliable, technically advanced .308 MSR”.

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