shot my 6mm Beggs today......

M

mike in co

Guest
first outing, function and velocity was all...no groups.

using reformed 6ppc brass(seemed like a good use for them since i cut off my 6ppc chamber), h4198, fed 205m primers, barts ultra moly'd, 23" krieger, 2.165" oal

25.1 3221 fps
25.4 3271 fps
25.7 3327 fps
26.0 3357 fps

i think the velocities are good.....
looks like i may need to try 26.3 also.....
and do some shooting in the 26 gr area.
comments ? suggestions ?
thanks
mike in co
 
in our AR ??

dont know that powder but you will like the cartridge,
have fun and I wish you some success with it this year, let us know how the matches go, the trial period of this category should prove interesting to all. It should open the eyes of the casual shooter to know all is possible if you try,

later Jefferson
 
4198 is really spikes...it goes from normal to off the charts quickly. It's a beautilful powder when it's on...but can wreck cases and throw big ugly in the wind when it goes out.

Hovis
 
ducking.....

yes it is the ar that was chambered in 6ppc.....thought i'd have better luck with a tapered case.

only time will tell

mike in co
 
Al Nyhus said:
-Pack up chrono.
-Shoot groups.
-Shoot aggs.
-Shoot tournaments.

I'm just sayin'..............;) :)
Click to expand...
well two things....
first the trip was to just check the function of the gun..its only the 5th or 6th chamber i have done, and second was to look and see what was gonna give what velocity......
and yes i do have some fresh brass prepped and ready to go, but
the 308 win br with old 8208 goes out today,,,,,,50 degrees lite winds.

mike in co
 
Mike congratulations on getting your 6Beggs shooting; keep us informed of your results. To my knowledge, you are the first to chamber the 6Beggs in an AR platform rifle. I understand you do not use a gas port and operate the rifle only as a single shot. Do you feed the loaded round from a magazine or by hand?

The 6Beggs cartridge has worked out so well that for the past several months, I have shot nothing else. With significantly reduced muzzle blast and recoil as compared to the 6PPC, the 6Beggs is easier to shoot, and although it holds two grains less powder, drives 68 grain bullets at the same velocity.

Yesterday at the tunnel, I was testing a new barrel. I was almost out of my favorite powder, H4198 Ext but had on hand an eight pound jug of H322 and decided to try it in the 6Beggs. I did not expect as much velocity but lo and behold my target muzzle velocity of 3380 fps was easily obtained with 29 grains! :eek: With a Wolf SRM primer and Tucker 66 grain boat tail bullet, accuracy was awesome! :D

So,, we have identified yet another powder that shoots terrific in the 6Beggs doing everything the 6PPC does but with two grains less powder and significantly reduced muzzle blast and recoil. Pretty good deal; huh? :D

:mad: "So Beggs; what are you not telling us?" you ask, "What's the down side of the 6Beggs; surely there is something about this upstart, pipsqueak cartridge that is not as good as the legendary 6PPC." :mad:

Well,,,there is really no compromise whatsoever unless you believe there is something sacred about having 6PPC engraved on the barrel instead of 6Beggs. If you think about it, this just may be an advantage. If I understand correctly, all rights to the 6PPC are now held by Dakota Arms. The 6Beggs cartridge is not owned by anyone; it belongs to the shooters of the world. :)

As long as Lapua continues making their magnificent 220 Russian case, we are good to go right out of the box; no need to "improve" it in any way. :cool: With the powders we have today, the Lapua 220 Russian case, simply necked up to 6MM is the perfect cartridge for short range benchrest. :)

FWIW

Gene Beggs
 
HovisKM said:
4198 is really spikes...it goes from normal to off the charts quickly. It's a beautilful powder when it's on...but can wreck cases and throw big ugly in the wind when it goes out.

Hovis
Click to expand...


Hovis, are you referring to the older IMR 4198 powder with long, stick-shaped granules? If so, I have no experience with that powder but Hodgdon's H4198 Extreme is my favorite powder in the 6Beggs. I have not experienced the characteristics you describe above.

Gene Beggs
 
Gene,

I shot the new H4198 Extreme in a 22ppc-.100 for a few years (also a waldog) I burned up three barrels. I've shot about 20 lbs of the stuff over the last 10 or so years. Just can't stay on top of it. When it's on...it's wonderful. I can normally get three or four great groups out of it in a day but one or two will have the big toss, and generally it was due to pressure jumping up to fast (in my opinion).

Hovis
 
HovisKM said:
Gene,

I shot the new H4198 Extreme in a 22ppc-.100 for a few years (also a waldog) I burned up three barrels. I've shot about 20 lbs of the stuff over the last 10 or so years. Just can't stay on top of it. When it's on...it's wonderful. I can normally get three or four great groups out of it in a day but one or two will have the big toss, and generally it was due to pressure jumping up to fast (in my opinion). Hovis
Click to expand...


Hovis you have undoubtedly burned more H4198 Extreme than I have but I'll bet you don't understand exactly what causes your rifle to go out of tune as temperature increases throughout the day. And I can tell you; it isn't the temp affect on the burning rate of the powder.

In recent years the aggs in short-range benchrest have improved considerably as shooters learned more about how to keep their rifles in tune. Some think it's changes in relative humidity, others believe it's temperature and its affect on the burning rate of the powder. It is neither of the above; it's due to changes in atmospheric density.

A decrease in barometric pressure decreases atmospheric density; lower pressure, lighter air, but the main thing that affects atmospheric density is TEMPERATURE !

Yep, when it gets hotter our rifles go out of tune if we do nothing to compensate. Increases in temperature result in thinner air, which in turn reduces in-bore, elapsed time. If the bullets begin to exit before the muzzle comes to a complete stop, groups open up.

"But how the 'ell do you compensate?" you ask. :mad:

Simple! Use a tuner. With the Beggs tuner, you turn the rings 'in' (toward the breach) 1/8th turn for each 5 degrees increase in temp. If your rifle was in tune during the first match of the day when temp was 50 degrees, you would turn the tuner 'in' an eighth turn when temp reaches 55 degrees.

"But what if I forget about all that stuff and get lost?" you ask. :mad: "How do I get BACK in tune?" :mad:

Very simple. :cool: First, remember that when using a tuner you NEVER change the powder charge, seating depth or anything else except the tuner setting. Yes Hovis; even with H4198 Ext.:)

Since the range of the tuner is one revolution between nodes, you can never be more than a half turn out of tune. If your rifle is showing verticle, give the tuner a quarter turn in either direction. If this makes it worse you went the wrong way; go back where you were and make a quarter turn in the other direction and you'll be in tune. If your quarter turn reduced the verticle but did not quite get it all out; you went the right way but did not go far enough. Give the tuner an additional quarter turn and you will be in tune. :cool:

What could possibly be simpler and easier than that? :eek: :)

Later

Gene Beggs
 
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