OAL, twist, barrel brand, #times fired brass, crimp/neck tension, notes on pressure/ groups?
Absolute Hammer load data
- Thread starter RockyMtnMT
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Hard rock
Well-Known Member
You have my interest I'm trying too decide on a twist rate on a 25 cal 257 ai or 25-284 talked too Mark at Bartlein and he said he could do a gain twist of one at the moment I'm thinking maybe 1-8 too 1-7 for all the new Hammers and fast twist bullets or 1-8.5 too 1-7.5 any advice is appreciated
Steve's twist rate suggestions have been spot-on every time. Choose your Hammer bullet and go with the recommended twist. If choosing between 2, go with the faster rate. You can't overspin them like cup and core bullets.
Hard rock
Well-Known Member
Thanks for the reply any pros or cons on a gain twist from Bartlein
Personally never used one, but got lots of Bartleins and love them.
Hard rock
Well-Known Member
I'm interested in doing something a little different I'm sending a barrel into them next week for them too copy the contour for a 25 cal and I'll camber too probally the 25- 284 for a med lenght Belgium made 98 mauser custom that my dad built Hammer bullets mainly in mind open for suggestions Thanks for response
Hard rock
Well-Known Member
Im thinking Bartlein gain twist 1-8 too 1-7
Post 749 continued....
Savage Model 14
250 Sav 90gr AH
22" 1:10 barrel
Hornady virgin brass
CCI 200
COAL 2.521 (changed seating to first "valley")
3 thou NT
Lee FCD 3/16 turn (ButterBean die setup method)
81 degree shoot temp
Benchmark
Charge Velocity Notes
37.3 3369
37.6 3388 faint ejector
37.9 3423
38.2 3430 faint ejector
38.5 3450 blown primer/bright ejector, stop
(4+ MOA shotgun pattern group on these rounds....)
IMR 3031
35.4 3187
35.8 3251
36.2 3273
36.6 3312
37.0 3338 faint ejector
37.4 3386 heavier bolt/ejector, stop
(2.7 MOA group here......)
Varget
39.0 3320
39.3 3317
39.6 3348
39.9 3381
40.2 3397 ejector, stop
(horizontal string here, 3+" long by 3/4" vertical)
Still a new reloader here, but either this rifle is not a shooter or it does not like the hammers. I will try it with a traditional bullet for comparison. I'm getting some 1MOA and below results with ELDX hand loads in my 280AI with room for improvement, but I don't think the poor results with the 250 Sav are all me.
Savage Model 14
250 Sav 90gr AH
22" 1:10 barrel
Hornady virgin brass
CCI 200
COAL 2.521 (changed seating to first "valley")
3 thou NT
Lee FCD 3/16 turn (ButterBean die setup method)
81 degree shoot temp
Benchmark
Charge Velocity Notes
37.3 3369
37.6 3388 faint ejector
37.9 3423
38.2 3430 faint ejector
38.5 3450 blown primer/bright ejector, stop
(4+ MOA shotgun pattern group on these rounds....)
IMR 3031
35.4 3187
35.8 3251
36.2 3273
36.6 3312
37.0 3338 faint ejector
37.4 3386 heavier bolt/ejector, stop
(2.7 MOA group here......)
Varget
39.0 3320
39.3 3317
39.6 3348
39.9 3381
40.2 3397 ejector, stop
(horizontal string here, 3+" long by 3/4" vertical)
Still a new reloader here, but either this rifle is not a shooter or it does not like the hammers. I will try it with a traditional bullet for comparison. I'm getting some 1MOA and below results with ELDX hand loads in my 280AI with room for improvement, but I don't think the poor results with the 250 Sav are all me.
6.5 cm
109 Absolute Hammers
Imr 4166 [40-43 grains in 0.3 increments]
1x fired hornady brass bumped .003
WLR winchester primers
COAL - 2.7420
Howa 1500 22 inch 8 twist.
40 - forgot to arm - clean bore was left of group
40.3 - 2987
40.6 - 3011
40.9 - 3030
41.2 - 3074
41.5 - 3094
41.8 - 3116
42.1 - 3142
42.4 - 3168 - maybe faint ejector mark?
42.7 - 3230 - ejector mark
43.0 - 3225 - BRIGHT ejector mark - slight stiff bolt
40.3 - 41.8 all grouped together, pic below.
Will play in the 41-41.5 range some more
This rifle shot about 2moa three shot groups with factory eld-x ammo.
109 Absolute Hammers
Imr 4166 [40-43 grains in 0.3 increments]
1x fired hornady brass bumped .003
WLR winchester primers
COAL - 2.7420
Howa 1500 22 inch 8 twist.
40 - forgot to arm - clean bore was left of group
40.3 - 2987
40.6 - 3011
40.9 - 3030
41.2 - 3074
41.5 - 3094
41.8 - 3116
42.1 - 3142
42.4 - 3168 - maybe faint ejector mark?
42.7 - 3230 - ejector mark
43.0 - 3225 - BRIGHT ejector mark - slight stiff bolt
40.3 - 41.8 all grouped together, pic below.
Will play in the 41-41.5 range some more
This rifle shot about 2moa three shot groups with factory eld-x ammo.
Kimber Montana 24 inch 10 twist.
270 win
116 Absolute Hammer
60.5 gr H4350
Fed 210m primer
Virgin peterson brass
3.30 coal
Brand new rifle. Shoots 130gr SST 0.74moa.
Decided to try my worked up load for my model 70.
Update speed:
3513
3517
3510
3518
Blue slash was clean bore.
270 win
116 Absolute Hammer
60.5 gr H4350
Fed 210m primer
Virgin peterson brass
3.30 coal
Brand new rifle. Shoots 130gr SST 0.74moa.
Decided to try my worked up load for my model 70.
Update speed:
3513
3517
3510
3518
Blue slash was clean bore.
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dougduey
Well-Known Member
Very nice
What cartridge?
I'm guessing 270
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