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Post by 7mmfreak on Dec 15, 2014 14:23:26 GMT -5
I know there is a lot of data on the board and I have done some digging to get a general idea of component needs and have bought accordingly. If all goes according to plan and my stuff ships before Xmas as I was told I will start swaging bullets between the 20th of December and 2nd of January while on leave. I have a lot of powder and can shoot most of the combinations members of the board are shooting. I would like to get a base-line of data that guys are using successfully. I have three breach-plugs and will modify them to reflect most common set-ups. I need data for the 275gn bullets (BE, EMAX, MH), 300gn bullets (BE, MH), 310gn bullets (APB), and 327gn bullets (MH). I do not need/want any sabot data as I will only test a few in a stock Savage and a NULA for stability and Precision and I have a good idea of what those two guns like. I would like contributions to be in the following format so I can easily put them into an Excel document for testing purposes:
1. Barrel Make, Bore and Groove Diameter, Rate of Twist
2. Breach Plug configuration
3. Smooth-Form or Full-Form with approximate bullet diameter after sizing and/or estimated loading pressure
4. Bullet Type and Weight
5. Powder Type and Charge
6. Average Precision and at what distance
As soon I get all the data analyzed I will start shooting the bullets to insure they are balanced/stable and to see what precision looks like. For the data that shows the most promise in my test guns I will send test batches out to the contributing members for further vetting. Moderators, if this is the wrong place and this needs to be in the sub-board feel free to move it. Thanks in advance.
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Post by hankinsrfls on Dec 15, 2014 15:01:27 GMT -5
Keith. Here is what I shoot and it regularly shoots less than 1/2 moa at 100 yards.
Barrel: Krieger and Brux .450-.458 1-20 twist.
Hankins Ignition System (HIS)
Smooth form bullets with very light loading pressure.
Parker 275 Grain BE.
78 grain charge of IMR4198
Less than 1/2 MOA at 100 yards with a muzzle velocity of 3000 FPS.
Hope this helps, hope you get some bullets done for the 45 and can progress on to the 40 caliber line....
Thanks Jeff..
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Post by Dave W on Dec 15, 2014 16:24:18 GMT -5
Duplex loads applicable?
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Post by rambler on Dec 15, 2014 17:06:26 GMT -5
Waiting on a part for my gun. As soon as I get it I can forward you 2 or 3 different combos. I don't have a chrono. Will you require pics? I know in the past if there weren't pics it didn't happen  |
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Post by 7mmfreak on Dec 15, 2014 18:04:21 GMT -5
Dave W,
Duplex is fine as I have most of the powders and a lot of guys shoot them here.
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Post by Dave W on Dec 15, 2014 20:43:16 GMT -5
275 BE
11/59 N110/H322
Sub MOA @ 200yds in a 20 twist .457 Shilen. Medium -30#, seating pressure. SMI plug with a .033 vent, plug length would be similar to a Savage recessed plug. Smooth -.4505 Bullet dia.
Same load, sub MOA @ 200yds in a .442/451 18 twist McGowen. Light seating pressure. .031 Sav. bushing plug. Full formed, .450 bullet dia.
300 FTX
5/51 RD/H4198
Sub MOA @ 200yds in both previously mentioned set ups.
Light one handed seating pressure in the Shilen @ .450 dia. smooth sized.
Light seating pressure in the McGowen @ .450 dia., full formed.
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Post by gar on Dec 16, 2014 5:21:47 GMT -5
Krieger barrel .450/.458 and smooth formed 275 BE and 300 MH sized to .4485. 75 gr. IMR 4198 wool wad lubed, Federal 215M primer with Knight breech plug and under 1 moa. at about 2850 to 2900 fps.
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Post by cuda on Dec 16, 2014 8:14:31 GMT -5
McGowen barrel .450/.458 1-20 twist
Savage BP with a recessed old carbide bushing
No sizing
Barnes .451 290gr TEZ lubed wad
IMR4198 69gr
1" at 100yds no speed have no way to check
Win 209 primer
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Post by deadeye on Dec 16, 2014 8:52:13 GMT -5
brux .450-.458 6g 1/20 twist heavy contour barrel brux #19
hankins ignition .044 plug
smooth die-bullets after sizing .450 loading pressure-maybe 5 lbs- 2 fingers on rod to get it down
parker 327mh
I4198-73.0gns
.3-.5moa out to 200yds....no actual groups at 500 but singles hitting the mark suggesting that it will print approx. .5 in good conditions @ 500yds **had to use my limited supply of bullets wisely- the 500yd launch's were to confirm my past wind deflections from a prior gun..the results were the same with this new gun regarding wind deflection.**
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Dec 16, 2014 13:20:42 GMT -5
26" McGowen .458 barrel, 1-22" twist DMB contour
Savage .030 bushing plug (No modifications)
Smooth sized 275 MH and 275 BE to .45115
One hand loading pressure, #10 or less
.060 veggie wad, Fed 209A primers
10/60, 11/59, 12/58 of N110/H322 (All sub MOA to 200 yards) 2600fps-2700fps
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Post by rangeball on Dec 16, 2014 14:22:29 GMT -5
1. Barrel Make, Bore and Groove Diameter, Rate of Twist- Pacnor .458, 1:22 tr.
2. Breach Plug configuration- Savage with .040 tungsten bushing and 7/32 PFC
3. Smooth-Form or Full-Form with approximate bullet diameter after sizing and/or estimated loading pressure- FF, loading pressure light medium, estimate FF bullet size on the lands .449ish
4. Bullet Type and Weight- 310gr APB
5. Powder Type and Charge- 70gr H4198
6. Average Precision and at what distance- MOA or better capable at 300 yds.
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Post by Dave W on Dec 20, 2014 10:06:56 GMT -5
Bump
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Post by danny1788 on Aug 18, 2016 17:55:07 GMT -5
Bump it up. I'm about to get ready to load for my new rem700ml brux 45 conversion using 310APB bullets. Still a newbie and not sure where to start on the FF loading pressure? going to go light charge maybe 70gr H4198 to start...
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