Got 50 brass fireformed and 5 loaded up with 58-62 gr of reloader 22 in 1 grain incrementsbehind a 140 moly a-max, soon as I get a chance I'll chrono them and see what she'll do.
By the way FYI, I tried fireforming with cheap bullets and IMR 4831, the rate was about 20% split shoulders, using the11 gr unique/COW/paper towels I never lost a case, but when the snow melts and the mrs sees paper towel fragments all over the yard.....TSHTF!
RR
Need more info. 6.5 Gibbs???? Parent case? Long or short action? Estimated Muzzle velocity? I love my 6.5-284 but another 6.5 wouldn't hurt my feelings.....
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"Well, If'n I had me a horse pistol like that.... I wouldn't be afraid of no bogger man." Rooster Cogburn
An excellent cartridge. I built one once on a Mauser action using a 6.5X57mm Schultz & Larsen barrel, rechambered. It can be loaded to come very close to the .264 Win. Mag. with a lot less powder!
You might want to use a lower STARTING LOAD for RE22 with the 140-grain bullet. I never used RE22 in mine, H4831 only, BUT the Stowers book, Gibbs Cartridges and Front Ignition Loading Technique, shows54grains of RE22 for 3,028 FPS as aMAX load with 140-grain bullets......
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"Bitte, trinks du das Wasser nicht. Dahin haben die Kuhen gesheissen."
Need more info. 6.5 Gibbs???? Parent case? Long or short action? Estimated Muzzle velocity? I love my 6.5-284 but another 6.5 wouldn't hurt my feelings.....
ALL Rocky Gibbs's cartridges are "maximum improved" .30/'06 brass. They start with the 240 Gibbs, and go up to the .35 Gibbs - .240, 25, 6.5mm, .270, 7mm, .30, 8mm, .338, and .35.
All are full-length '06 cases, with minimum taper, (.455" shoulder diameter),.250" length necks, and 35-degree shoulders.
Obviously, these rounds must be used in "standard length" actions, like the '03 Springfield, etc. For example, the .270 Gibbs will deliver in the vicinity of 3000 FPS with a 150-grain bullet, and the .30 Gibbs gives almost 2900 with a 200 grain bullet. These figures are from a 26" barrel.
If one is interested in Gibbs cartridges, there's a booklet called Gibbs' Cartridges and Front Ignition Loading Technique, printed by Wolfe Publishing (RIFLE/HANDLOADER MAG.) in 1991 consisting of a compilation of articles written by Roger Stowers and originally published in Wolfe's magazines (don't remember if it was Handloader or Rifle).
I have always been interested in the .338/'06, and think the .338 Gibbs would represent the ultimate in such cartridges. With a .338" bullet, the Gibbs casewould not be over bore capacity either......
Here's a picture of them, 6.5mm through .30 .... All identical except for bullet diameter.
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"Bitte, trinks du das Wasser nicht. Dahin haben die Kuhen gesheissen."
So its basically a 6.5-06 improved. Though I believe the 06 improved is just a 30 degree shoulder. Humm...... very interesting........yep its official I WANT ONE!
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"Well, If'n I had me a horse pistol like that.... I wouldn't be afraid of no bogger man." Rooster Cogburn
eldeguello, I chose ray romain to chamber my gibbs because he ordered his reamer built with a 270 win length, so I have another .050" of neck length. also of the 38 or so gibbs rifles that ray has built most of the owners claim 62 gr of RE22 and 3300 fps with a 30" barrel. I've shot a 3 round group with 59 gr and there was no signs that it was even starting to get warm.
I chose this cartridge because with a 139 gr lapua at 3300 fps (b.c. of .615) it'll mirror the trajectory of my 7mm AM to about 800 yds with a much, much longer barrel life. not really any cheaper to shoot but it'll last longer and I can shoot it all I want.
RR
eldeguello, I chose ray romain to chamber my gibbs because he ordered his reamer built with a 270 win length, so I have another .050" of neck length. also of the 38 or so gibbs rifles that ray has built most of the owners claim 62 gr of RE22 and 3300 fps with a 30" barrel. I've shot a 3 round group with 59 gr and there was no signs that it was even starting to get warm.
I chose this cartridge because with a 139 gr lapua at 3300 fps (b.c. of .615) it'll mirror the trajectory of my 7mm AM to about 800 yds with a much, much longer barrel life. not really any cheaper to shoot but it'll last longer and I can shoot it all I want.
RR
OK! I must admit when I read Stowers' load data for the 6.5 Gibbs, his loads forthis caliber were several grains below what he was able to use in the .25 and .270 Gibbs for comparqble bullet weights, which I thought was a little strange. However, as we all know, all rifles are individuals, and perhaps his 6.5 topped out sooner than the others did .........
As long as we arewilling to start out conservatively and workup carefully, we can stay out of trouble!
Let us know what you come up with as a final load. I have always been interested in the Gibbs line, and believe ol' Rocky was never given the credit he was due for developing his cartridges. It's for sure he never made any real money! During his lifetime, he was often accused of provding inflated velocity claims while running excessive pressures. Actually, his velocity claims were derived fromchronographing atthe Speer laboratory, and he himself built and used a crusher-type pressure gun, so was well aware of what his actual pressures were.
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"Bitte, trinks du das Wasser nicht. Dahin haben die Kuhen gesheissen."
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I chose this cartridge because with a 139 gr lapua at 3300 fps (b.c. of .615) RR
With most 6.5's accuracy seems to deteriate somewhere around 3100 FPS. That is why most 1000 yarders seem to target that threshold. They postulate that it may have something to do with Jacket fragmentation at higher speeds. I have no idea myself, but it seems to be a common theme. I know one fellow that says he can load his 6.5-06 well beyond the 3000 FPS that he loads to but that his accuracy goes to hell... It may be as simple as refining the twist rate of their barrels. But, I'm sure that they have thought of thatbecause they are all smarter thanme .... Just food for thought.
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"Well, If'n I had me a horse pistol like that.... I wouldn't be afraid of no bogger man." Rooster Cogburn
I was looking over some old notes of mine, in Handloader they list a charge of 56 grains of R22 behind a 140 gr bullet and 3018fps with a 26" Shilen. I am assuming all the loads listed are maximum, though it doesnt state that they are other that saying the the responsibility bla bla bla.
Over the range of bullet weights, in my rifle I get somewhat more velocity with less powder. This is where the "each barrel is different" thing comes into effect.
I settled on a load consisting of 52.0 grs of R22 behing a 140 gr MK which yields 3010 fps and shoots 1/2 moa or less.
As a note the Nosler #5 shows a max load with the 6.5-06 as 50.5 grs of R22 with a 140gr.
RR, keep us posted on what you get with your loads with R22.
I would really like to see what real pressures the 62 gr loads make.
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Life is good, Give God the Glory....doubleA
6.5 Gibbs
