7WSM + 300WSM Need Pet Loads
- Thread starter Forum Boss
- Start date
befreejsb said:
Long before i would change a barrel because of a wild first shot I would modify the bedding and after that recut the crown. Also change the scope to one that's know to perform.
Take the stock off now and look at the bedding. Get some black electrical tape and make a shim of some of it folded on itself under the barrel and put it back together.
Bring your screwdrivers and tools along with that tape to the range.
If it does not shoot much better loosen the rear guard screws and shoot it again.
Use a soft folded towel under the forend. Be consistent in how you shoot and hold the rifle.
7 wsm
25" Bartlein Barrel
65.2gr Re 22
Win Brass
168gr Long Range Accubond touch lands
Shot my smallest group ever. In the 0's
25" Bartlein Barrel
65.2gr Re 22
Win Brass
168gr Long Range Accubond touch lands
Shot my smallest group ever. In the 0's
7WSM
160 accubond
63 grains H4831 sc at 3300ft elevation
2.900= just off lands
Federal Gold Medal Match 215M
Match prepped Winchester brass- turned necks etc -weighed & measured accubonds-
Shillen select match- contour 3-1in9 -24inch -laminate stock
Win mod 70 tweeked-trigger job-aluminum picitinny rail-burris sig zee-shepherd scope
Have not had time to crono yet
But 1 inch groups at 300 yrds =truly amazing! I'm done my load development!!!
Look out wolves! 2 down so far! but only at 300-330 yards.
One at 618yds the year before with the old barrel.
160 accubond
63 grains H4831 sc at 3300ft elevation
2.900= just off lands
Federal Gold Medal Match 215M
Match prepped Winchester brass- turned necks etc -weighed & measured accubonds-
Shillen select match- contour 3-1in9 -24inch -laminate stock
Win mod 70 tweeked-trigger job-aluminum picitinny rail-burris sig zee-shepherd scope
Have not had time to crono yet
But 1 inch groups at 300 yrds =truly amazing! I'm done my load development!!!
Look out wolves! 2 down so far! but only at 300-330 yards.
One at 618yds the year before with the old barrel.
Attachments
300WSM
210 Berger VLD, jumping 0.005"
60.0 gr H4350 - on the hot side
Federal 210M
Norma or Winchester brass
2775 fps, 26" bbl
I was pleased with how easy it was to tune this load. Almost 1900 rounds through the barrel and it still shoots great.
210 Berger VLD, jumping 0.005"
60.0 gr H4350 - on the hot side
Federal 210M
Norma or Winchester brass
2775 fps, 26" bbl
I was pleased with how easy it was to tune this load. Almost 1900 rounds through the barrel and it still shoots great.
.300 WSM
34" Brux 8.75" twist, .280" freebore
BAT 3LL147OCTPIC
Norma .270 WSM brass, expanded and turned to .012" wall
Berger 230 Hybrid, ~3.270" OAL
Russian LR primer
66.0 H4841 SC, ~2865 fps
68.5 IMR 7828 SSC, ~2950 fps
34" Brux 8.75" twist, .280" freebore
BAT 3LL147OCTPIC
Norma .270 WSM brass, expanded and turned to .012" wall
Berger 230 Hybrid, ~3.270" OAL
Russian LR primer
66.0 H4841 SC, ~2865 fps
68.5 IMR 7828 SSC, ~2950 fps
7WSM Target Loads
63gr H4831SC
CCI Magnum primer
turned Winchester brass, 311 neck
180 JLK
.0020 of the lands
velocity avg 2875
shoots consistently in the mid to high 2s (.250-.286 MOA)
61gr H4831SC
CCI BR2 primer
turned Winchester brass, 311 neck
180 Berger VLD
.001 of the lands
velocity avg 2825
shoots consistently in the mid to high 1s (.150-.180 MOA)
Rifle
Remington 700 trued magnum action in a McMillan Tooley MBR stock, pillared and bedded
30" Broughton 5C HV contour barrel
3oz Jewel trigger
63gr H4831SC
CCI Magnum primer
turned Winchester brass, 311 neck
180 JLK
.0020 of the lands
velocity avg 2875
shoots consistently in the mid to high 2s (.250-.286 MOA)
61gr H4831SC
CCI BR2 primer
turned Winchester brass, 311 neck
180 Berger VLD
.001 of the lands
velocity avg 2825
shoots consistently in the mid to high 1s (.150-.180 MOA)
Rifle
Remington 700 trued magnum action in a McMillan Tooley MBR stock, pillared and bedded
30" Broughton 5C HV contour barrel
3oz Jewel trigger
Tikka T3 SV 24" Varmint contour .300WSM in MDT Tac-21
67.5gr Reload Swiss RS62 (Below Max)
WW Brass
Fed 215m Primer
2156 155gr SMK
2.940" (Accurate mag length)
Velocity 3045
1/2" average @ 100
67.5 VV N550
WW Brass
Fed 215m Primer
155 Sierra TMK
2.940"
Velocity 3128
1/2 - 3/4" @ 100
3/4 moa @ 600
67 Reload Swiss RS62
WW Brass
Fed 215m Primer
178 A-Max
2.965"
Velocity 2985
0.6" @ 100
About to try 175 VLD with N550
67.5gr Reload Swiss RS62 (Below Max)
WW Brass
Fed 215m Primer
2156 155gr SMK
2.940" (Accurate mag length)
Velocity 3045
1/2" average @ 100
67.5 VV N550
WW Brass
Fed 215m Primer
155 Sierra TMK
2.940"
Velocity 3128
1/2 - 3/4" @ 100
3/4 moa @ 600
67 Reload Swiss RS62
WW Brass
Fed 215m Primer
178 A-Max
2.965"
Velocity 2985
0.6" @ 100
About to try 175 VLD with N550
SSG 7WSM, Lawton 7500, 30" Broughton 5C 8 Twist
Brass: Winchester WSM
Primer: Federal 210 Match
Powder: Reloader 25 65.5 Grain
COAL: 3.190" at the ogive
Velocity: 3,025 FPS.
Brass: Winchester WSM
Primer: Federal 210 Match
Powder: Reloader 25 65.5 Grain
COAL: 3.190" at the ogive
Velocity: 3,025 FPS.
Took the 7 wsm rifle to the gunsmith Sunday morning to have the neck extended by .020" so I can run cases at 2.095" (coal is now 2.105") instead of the trimmed case length of 2.073" as the coal could only be 2.085", we don't know why the chamber ended up at this original length, most likely the 7 WSM match grade reamer had a shorter than usual length neck. We also re-crowned and extended the throat by .004".
The rifle had fired 650 rounds and the throat had not warn, the gunsmith believes I will get another 800 rounds or more as the barrel was in pretty good condition. I am running at around the 2,970fps with 180 gr VLD Bergers with 66 grs H1000, if I can get a total of 1400 rounds plus, I think that's pretty good.
So I now have the benefit of a true 7 WSM long case (base to shoulder, which is longer than a 300 WSM) and the long neck of a 300 WSM, this should give a bit better barrel life along the lines of a 300 WSM barrel, I hope? I have attached a photo of the new & old brass showing the longer neck.
The rifle had fired 650 rounds and the throat had not warn, the gunsmith believes I will get another 800 rounds or more as the barrel was in pretty good condition. I am running at around the 2,970fps with 180 gr VLD Bergers with 66 grs H1000, if I can get a total of 1400 rounds plus, I think that's pretty good.
So I now have the benefit of a true 7 WSM long case (base to shoulder, which is longer than a 300 WSM) and the long neck of a 300 WSM, this should give a bit better barrel life along the lines of a 300 WSM barrel, I hope? I have attached a photo of the new & old brass showing the longer neck.
Clownbuster
Just enough to hurt
SSG 7mm-300WSM, Pierce Ti LA, 28" Proof Carbon barrel, 1:9 twist
180gr Berger
65.4 gr H1000
3.100" COAL
Federal 210
Necked-up 270WSM Norma brass, neck-turned to 0.015", trim to 2.080".
2925-2975 fps
Produces consistent 0.15" groups. Anneal after every firing.
SSG 7mm-300WSM, Defiance LA, 5R Benchmark barrel, 26", 1:9 twist
180gr Berger
67.0 gr H1000
3.100" COAL
Federal 210
Necked-up 270WSM Norma brass, neck-turned to 0.015", trim to 2.080".
2925-2975 fps
Produces consistent .15" groups. Anneal after every firing.
180gr Berger
65.4 gr H1000
3.100" COAL
Federal 210
Necked-up 270WSM Norma brass, neck-turned to 0.015", trim to 2.080".
2925-2975 fps
Produces consistent 0.15" groups. Anneal after every firing.
SSG 7mm-300WSM, Defiance LA, 5R Benchmark barrel, 26", 1:9 twist
180gr Berger
67.0 gr H1000
3.100" COAL
Federal 210
Necked-up 270WSM Norma brass, neck-turned to 0.015", trim to 2.080".
2925-2975 fps
Produces consistent .15" groups. Anneal after every firing.
Last edited:
300 WSM accuracy loads:
Berger 230 VLD OTM
IMR 7828ssc: 62.2 gr
2.965" (touching lands)
Norma 300 WSM, neck turned to 0.0130" (80.4gr H2O cap)
WLRM primer
2625 fps at 30F, 2651 fps at 65F, av. sd 4.5
(Warm, but on 13th loading with no dropouts yet) Annealed after each firing
Average precision (not best group) 10 x 3 shot groups at 300 yds: 0.26 moa wide x 0.37 moa high (prone bipod).
Berger 190 VLD Hunting
IMR 7828ssc: 67.3 gr
2.911" COAL (touching lands)
Norma 300 WSM, neck turned to 0.0130" (80.4gr H2O cap)
WLRM primer (Fed210M comparable accuracy and MV, but higher sd)
2926 fps at 51F, sd 9
On 14th loading no primer dropouts yet. Annealed after each firing
Av. Precision (not best group) 0.47 moa w x 0.34h 300 yds (prone bipod)
Rifle: blueprinted early 1970's Rem 700 SA, Benchmark MTU 1:10 22", McMillan A1, Nightforce NXS 5.5-22, Custom MB, Harris, tuned 40X trigger
Notes: 190 gr load has taken bull elk at 570 yds.
230 gr. Has considerably more schwack, but no opportunity to test terminal ballistics yet.
Had very accurate Berger 200 Target Hybrid load w/H4350 (61.0 gr, Norma brass, WLRM, Nosler brass but MV 2807 w/sd 12-14 so didn't see the use in this one.
Hope this is helpful to the project.
Berger 230 VLD OTM
IMR 7828ssc: 62.2 gr
2.965" (touching lands)
Norma 300 WSM, neck turned to 0.0130" (80.4gr H2O cap)
WLRM primer
2625 fps at 30F, 2651 fps at 65F, av. sd 4.5
(Warm, but on 13th loading with no dropouts yet) Annealed after each firing
Average precision (not best group) 10 x 3 shot groups at 300 yds: 0.26 moa wide x 0.37 moa high (prone bipod).
Berger 190 VLD Hunting
IMR 7828ssc: 67.3 gr
2.911" COAL (touching lands)
Norma 300 WSM, neck turned to 0.0130" (80.4gr H2O cap)
WLRM primer (Fed210M comparable accuracy and MV, but higher sd)
2926 fps at 51F, sd 9
On 14th loading no primer dropouts yet. Annealed after each firing
Av. Precision (not best group) 0.47 moa w x 0.34h 300 yds (prone bipod)
Rifle: blueprinted early 1970's Rem 700 SA, Benchmark MTU 1:10 22", McMillan A1, Nightforce NXS 5.5-22, Custom MB, Harris, tuned 40X trigger
Notes: 190 gr load has taken bull elk at 570 yds.
230 gr. Has considerably more schwack, but no opportunity to test terminal ballistics yet.
Had very accurate Berger 200 Target Hybrid load w/H4350 (61.0 gr, Norma brass, WLRM, Nosler brass but MV 2807 w/sd 12-14 so didn't see the use in this one.
Hope this is helpful to the project.
Kimber Montana 7WSM
168Gr Berger VLD hunting, Norma 300WSM brass, Fed LRP, 69.5Gr AR2217 (H1000) 3034fps .9moa @200m
168Gr Berger VLD hunting, Norma 300WSM brass, Fed LRP, 69.5Gr AR2217 (H1000) 3034fps .9moa @200m
300 WSM
Savage 12 BVSS 26" bbl
Fully prepped Winchester brass, weight sorted to 2% delta
200gr Hornady ELD-X
61gr Accurate Arms 4350
WLRM primer
2.860" COAL
2825 FPS
This load will shoot 1" ten round groups at 330 yards, 2.5" (1.75" vertical) ten round groups at 550 yards.
Looking forward to shooting this past 1k.
Savage 12 BVSS 26" bbl
Fully prepped Winchester brass, weight sorted to 2% delta
200gr Hornady ELD-X
61gr Accurate Arms 4350
WLRM primer
2.860" COAL
2825 FPS
This load will shoot 1" ten round groups at 330 yards, 2.5" (1.75" vertical) ten round groups at 550 yards.
Looking forward to shooting this past 1k.
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