Ohlson7mm
Well-Known Member
This winter i decided i want to build a dictated hunting rifle for my Thunder Beast Ultra 7 Suppressor.
For the caliber i new i wanted some thing that i had plenty of powder for, i could readily find quality brass , and a good selection of bullets' that were also easy to come buy. also needed to be a all-around elk, deer, and bear round
so that left me ,
300 WSM , i already have dies, new norma brass, lots of good 30 cal bullets and a lot of H4350
300 RSAUM ???
6.5 PRC , i don't have any of the unicorn powders it likes and my personal cut off for bear and elk caliber diameter is 7mm so this ones a no go for me
there was plenty more i thought about, i love my wildcats and my 7mmWSM.
I ended up going with the 300 WSM for a bunch of reasons, i had all the stuff needed to reload , a few new 30cal barrel blanks laying around , and it has all the power i could need
Action - stock remington 700 sa that use to be a 270wsm
Trigger - Timney the hit-st 8oz flat
Stock - Went with a MDT LSS chassis i got from a member on here
Barrel - X-Caliber Remage pre fit #6 contour 1-10 twist that i cut down to 18" and threaded
Muzzle Brake System from Area 419, there Hellfire brake and there adapter for my thunderbeast can so i can swap back and forth easily
Scope - Zeiss V4 4-16x50 with Zeiss rings and NF 20moa rail
I was very curious to see what the 300 wsm could do from an 18" barrel, if it didn't live up to my goals well i would just spin it off and go a different direction .
went with the Berger 175gr OTM Tactical mostly because i had a thousand
i tryed a few differint powders just to be sure
PP4000MR, N560, and H4350
N560 showed promise i just didn't have a lot of it so i didn't go to far with the work up
as for the PP4000MR this stuff was all over the place and now its all sold never had good luck with this powder in anything i tried it in.
Now H4350 was the Ticket as i thought it would be
my work up was with once fired norma brass and fed gm215m primers working up in .3gr increments
loaded to .05 off jam
sea-level 60derg speeds with magneto speed on a mk mount
With out the thunderbeast ultra 7 as im still waiting on that
62.4=2800
62.7=2829
63.0=2849
63.3=2856
63.6=2869
63.9=2872
64.2=2874
64.5=2889
64.8=2893
so i went with 63gr and 64gr loaded 5 of each
63gr avg-2839 sd-8.8 64gr avg 2878 sd- 5.8
2845 2879
2851 2881
2841 2874
2832 2871
2830 2886
i was hoping to get 2700 to 2900 fps out of the 18" barrel but wasn't to sure if i could. going to stick with the 64gr load still need to play with my seating depth a little but so far so good still a work in progress
i will try to post pictures here shortly and maybe weigh it
overall it came out better than i thought it would more or less it was for my curiosity and something to do over the winter.
For the caliber i new i wanted some thing that i had plenty of powder for, i could readily find quality brass , and a good selection of bullets' that were also easy to come buy. also needed to be a all-around elk, deer, and bear round
so that left me ,
300 WSM , i already have dies, new norma brass, lots of good 30 cal bullets and a lot of H4350
300 RSAUM ???
6.5 PRC , i don't have any of the unicorn powders it likes and my personal cut off for bear and elk caliber diameter is 7mm so this ones a no go for me
there was plenty more i thought about, i love my wildcats and my 7mmWSM.
I ended up going with the 300 WSM for a bunch of reasons, i had all the stuff needed to reload , a few new 30cal barrel blanks laying around , and it has all the power i could need
Action - stock remington 700 sa that use to be a 270wsm
Trigger - Timney the hit-st 8oz flat
Stock - Went with a MDT LSS chassis i got from a member on here
Barrel - X-Caliber Remage pre fit #6 contour 1-10 twist that i cut down to 18" and threaded
Muzzle Brake System from Area 419, there Hellfire brake and there adapter for my thunderbeast can so i can swap back and forth easily
Scope - Zeiss V4 4-16x50 with Zeiss rings and NF 20moa rail
I was very curious to see what the 300 wsm could do from an 18" barrel, if it didn't live up to my goals well i would just spin it off and go a different direction .
went with the Berger 175gr OTM Tactical mostly because i had a thousand
i tryed a few differint powders just to be sure
PP4000MR, N560, and H4350
N560 showed promise i just didn't have a lot of it so i didn't go to far with the work up
as for the PP4000MR this stuff was all over the place and now its all sold never had good luck with this powder in anything i tried it in.
Now H4350 was the Ticket as i thought it would be
my work up was with once fired norma brass and fed gm215m primers working up in .3gr increments
loaded to .05 off jam
sea-level 60derg speeds with magneto speed on a mk mount
With out the thunderbeast ultra 7 as im still waiting on that
62.4=2800
62.7=2829
63.0=2849
63.3=2856
63.6=2869
63.9=2872
64.2=2874
64.5=2889
64.8=2893
so i went with 63gr and 64gr loaded 5 of each
63gr avg-2839 sd-8.8 64gr avg 2878 sd- 5.8
2845 2879
2851 2881
2841 2874
2832 2871
2830 2886
i was hoping to get 2700 to 2900 fps out of the 18" barrel but wasn't to sure if i could. going to stick with the 64gr load still need to play with my seating depth a little but so far so good still a work in progress
i will try to post pictures here shortly and maybe weigh it
overall it came out better than i thought it would more or less it was for my curiosity and something to do over the winter.
