I receintly aquired, a 14" contender chambered for 7mm Glaser. which is a 7 mm/307 shortened .257. I have dies, and 40 or 50 cases. But no load data. according to Mr. Glaser's notes it has an 8% increase in cap. over the 7-30 waters. Mr. Glaser died 10 yrs ago so i cannot ask him for help. I started w/ 7-30 info but, cannot expected fps. anybody know anything?

I receintly aquired, a 14" contender chambered for 7mm Glaser. which is a 7 mm/307 shortened .257. I have dies, and 40 or 50 cases. But no load data. according to Mr. Glaser's notes it has an 8% increase in cap. over the 7-30 waters. Mr. Glaser died 10 yrs ago so i cannot ask him for help. I started w/ 7-30 info but, cannot expected fps. anybody know anything?


Quickload, a program, to help with cartridge loading does not list the 7mm Glazer, but if you give me an idea what cartridge and projectile you would like to use, I will pug it in and give you the data it spits out.

I too am new to the Wildcat scene having just built a 300 ICL Tornado, I used quickload to get my starting loads, and have had pretty good luck so far.

Zero

Iwould like to use 120, 140 gr. ctg dim are the same as a 7-08 only with .257" less case length. i've gotten 2400 fps w/ 120 gr, and 37.0 gr AA2460, and 42 gr H380, both near or at max, in my gun, blah, blah,blah. what is a 300ICL tornado?

OK Plug in the data that you gave me, you did not tell me what kinda bullet you are using so I put it as a Sierra SP 120gr SP.

I used the 7-08 Remington as you stated it was very close.

Your Hodgdon load is extremely light!

Max Pressure for a 7-08 is right at 60,000 Psi you are at 31442 with your Hodgdon load.

44gr of Hodgdon H335 will get you more in the range of where you should be, right at 44,000psi. Now please cut the load by 5% to start and work up 1gr at a time checking for pressure signs. That will get you a little over 2500fps outta your 14 inch barrel.

Here is the data for your H380 load:

Please note that the Muzzle Velo. Is only 2140FPS on your load.

-------------------------------------------------------------------------------
WARNING: Table produced by not verified Ballistics Calculations! Check results
always against loading data of current reloading manuals! Input data and results may be invalid or wrong! The use of this data for loading ammunition can cause, directly or indirectly, serious injury to personnel and material. No responsibility is implied and THE USER MUST ASSUME THE ENTIRE RISK OF USING THE DATA.
QuickLOAD Interior Ballistics V.2.9 # 501060 - distributed
in USA by NECO, P.O. Box 427, Lafayette, CA 94549
© Copyright 1987-2001 - H.Broemel,Babenhausen,Germany
-------------------------------------------------------------------------------
Case capacity and propellant properties may vary considerably from lot to lot!

**** Input data: Date: 30-May-2004 Time: 12:46:32
Cartridge................. = 7 mm-08 Rem.
Projectile type........... = .284, 120, SRA SP 1900 with flatbase

Max.avg.pressure(Piezo CIP)= 60191 psi Shot start / init pressure = 3626 psi
Projectile weight (gr)= 120 Groove caliber (in)= 0.284
Length of cartridge (in)= 2.800 Length of case (in)= 2.035
Case capacity(Grains Water)= 56.50 Length of projectile (in)= 0.900
Length of barrel (in)= 14.000
**** Values calculated:
Seating depth (in)= 0.135 Volume displaced (gn H2O)= 2.16
Comb.chamber volume(gn H2O)= 54.34 Projectile travel (in)= 12.100
**** Input data:
Propellant type........... = Hodgdon H380
Charge weight..........(gr)= 42.0 Load density......(g/cu.cm)= 0.772
Heat of Explosion (cal/lb)= 430112 Ratio of spec. heats cp/cv = 1.231
Solid density (gr/cu.in)= 397.0 Weighting factor.......... = 0.5
Burning rate factor Ba(1/s)= 0.42 Pro-/degressivity factor a = 4.080
Burning limit ......... z1 = 0.3 Combust.Chamber Vb(ft³)= 1.245766E-4
Factor.................. b = 1.931 X-S.Area of Bore A(ft²)= 4.347686E-4
Bulk density (gr/cu.in)= 240.2 Projectile mass mp (lb)= 1.714286E-2
Loading ratio (%)= 81.2 Projectile travel x(ft)= 1.008337E+0

**** Results calculated:
Maximum pressure ........ = 31428 psi Way of projectile at Pmax = 2.34 in
Muzzle velocity ......Ve = 2140 fps Muzzle pressure ......Pe = 13495 psi
Project. energy at muzzle = 1221 ft.lbs Fraction of powder burnt = 80.3 %
Projectile travel time from 10% Pmax to muzzle = 1.07 ms



Here is the data for the load that more in line:

-------------------------------------------------------------------------------
WARNING: Table produced by not verified Ballistics Calculations! Check results
always against loading data of current reloading manuals! Input data and results
may be invalid or wrong! The use of this data for loading ammunition can cause,
directly or indirectly, serious injury to personnel and material. No responsibi-
lity is implied and THE USER MUST ASSUME THE ENTIRE RISK OF USING THE DATA.
QuickLOAD Interior Ballistics V.2.9 # 501060 - distributed
in USA by NECO, P.O. Box 427, Lafayette, CA 94549
© Copyright 1987-2001 - H.Broemel,Babenhausen,Germany
-------------------------------------------------------------------------------
Case capacity and propellant properties may vary considerably from lot to lot!

**** Input data: Date: 30-May-2004 Time: 12:51:40
Cartridge................. = 7 mm-08 Rem.
Projectile type........... = .284, 120, SRA SP 1900 with flatbase

Max.avg.pressure(Piezo CIP)= 60191 psi Shot start / init pressure = 3626 psi
Projectile weight (gr)= 120 Groove caliber (in)= 0.284
Length of cartridge (in)= 2.800 Length of case (in)= 2.035
Case capacity(Grains Water)= 56.50 Length of projectile (in)= 0.900
Length of barrel (in)= 14.000
**** Values calculated:
Seating depth (in)= 0.135 Volume displaced (gn H2O)= 2.16
Comb.chamber volume(gn H2O)= 54.34 Projectile travel (in)= 12.100
**** Input data:
Propellant type........... = Hodgdon H335
Charge weight..........(gr)= 44.0 Load density......(g/cu.cm)= 0.808
Heat of Explosion (cal/lb)= 431195 Ratio of spec. heats cp/cv = 1.222
Solid density (gr/cu.in)= 409.7 Weighting factor.......... = 0.5
Burning rate factor Ba(1/s)= 0.61 Pro-/degressivity factor a = 0.733
Burning limit ......... z1 = 0.5 Combust.Chamber Vb(ft³)= 1.245766E-4
Factor.................. b = 1.597 X-S.Area of Bore A(ft²)= 4.347686E-4
Bulk density (gr/cu.in)= 260.5 Projectile mass mp (lb)= 1.714286E-2
Loading ratio (%)= 78.5 Projectile travel x(ft)= 1.008337E+0

**** Results calculated:
Maximum pressure ........ = 47383 psi Way of projectile at Pmax = 1.95 in
Muzzle velocity ......Ve = 2514 fps Muzzle pressure ......Pe = 15768 psi
Project. energy at muzzle = 1683 ft.lbs Fraction of powder burnt = 96.2 %
Projectile travel time from 10% Pmax to muzzle = .87 ms

Hope all this helps you some.

Zero

Its a wildcat cartridge based on the 257 Roberts, but I am not using the 257 I am using 30-06 brass.

It is basically a little more then a 308, and a little less then a 30-06, it was an attempt to get 30-06 type ballistics outta a short action.

I got the idea from PO Ackley Book Vol II I think it was, the gun is not completely finished yet, I still have to send it out to get refinished, but I have fired it, about 75 rounds.

Here is a link to the whole story and progression:
http://www.24hourcampfire.com/ubbthreads/showflat.php?Cat=&Board=Custom&Number=241176&page=1&view=collapsed&sb=5&o=365&fpart=all

At that link there are many picture of the gun, ammo, and targets. Let me know what you think.

I just got the Bolt Fluted, and as you can see from the story I have been working on this work a while I still have to sork up a good load for the gun.

Zero

Sounds like a 7X57 improved. Just a thought Swany

7-08 is too big a base ctg. 280 Rem is to 7-08, as 7-08 is to 7mm glaser. maybe a 7-30 AI +P. all of my test loads were chrono'ed at 10' at 65degree F. 2400fps, 1 more gr of each powder gave 2500fps, BUT WERE HOT! flat primers, hard extraction.
why not a 30-284? 06, in 08 action

ps i'm using 120gr horn sp

7-08 is too big a base ctg. 280 Rem is to 7-08, as 7-08 is to 7mm glaser. maybe a 7-30 AI +P. all of my test loads were chrono'ed at 10' at 65degree F. 2400fps, 1 more gr of each powder gave 2500fps, BUT WERE HOT! flat primers, hard extraction.
why not a 30-284? 06, in 08 action

ps i'm using 120gr horn sp

Wildcatter

OK I will try in with the 7-30 Brass, It will be interesting to see what comes back.

As far as my Wildcat goes alot of people say why not the 30-284, well the 1st reason is that on my wildcat I can use 30-06 brass which I can pick up anywhere, I don't see alot 284 brass laying around.

The 2nd reason is that I wanted something different, and if everyone would do the 30-284, then that is another reason not to do it.

Zero