Wow...fantastic...great vertical! That dog should hunt! Good luck tomorrow!Just shot some quick seating depth test groups at 300yds for a new lot of 150 SMK's prior to a match in the a.m. Winds were near 06:00 4-8mph and no mirage. The first depth shot 5 in 0.56" (about 0.005" off lands). The 0.010" off group shot 2.39"...WTF! Sure sensitive to depth that close to the lands. Fortunately we loaded all the rounds at 0.005" off figuring I could seat them deeper if the test waranted. Sure ain't touching a thing. The same load held about 0.65" of vertical at 600yds with the first lot running 2950fps. This lot is running in the upper 2920's but the bore was scrubbed down to bare metal so it may speed up a little and open up some tomorrow at 600yds....but I am really liking what I see with this bullet thus far.
150 SMKs and the 6.5 x 284 ***UPDATE***
- Thread starter ShootDots
- Start date
wboggs
Gold $$ Contributor
Let us know how the match goes. I will try some loads 0.005 off. As I mentioned before, break in loads at 2963 shot well for me. Will probably run some up to the 3100 range to see if the 7.5 t in my barrel blows them up. This should add some clarity to this issue but I am using a 5R Bartlein.Just shot some quick seating depth test groups at 300yds for a new lot of 150 SMK's prior to a match in the a.m. Winds were near 06:00 4-8mph and no mirage. The first depth shot 5 in 0.56" (about 0.005" off lands). The 0.010" off group shot 2.39"...WTF! Sure sensitive to depth that close to the lands. Fortunately we loaded all the rounds at 0.005" off figuring I could seat them deeper if the test waranted. Sure ain't touching a thing
Bill
Shot at 600yds in F-class match. Light head winds with heavy mirage/switching R-L-R. I had problems with vertical in the first string but that was me....rear bag issues. A bit better vertical on second string but I was not focused on subtle wind changes and dropped a couple. Third string all came together but conditions worsened and still dropped two. X-count was lower than my usual. I was not on my game but I also feel that my load is not optimum...maybe
. I did notice that I lost a couple of points by holding more than I should nfor the condition; I was holding my usual for a 140-142gr with a much lower B.C.. That was a good revelation and I think this will shine when conditions are heavier.
. I did notice that I lost a couple of points by holding more than I should nfor the condition; I was holding my usual for a 140-142gr with a much lower B.C.. That was a good revelation and I think this will shine when conditions are heavier.wboggs
Gold $$ Contributor
So, a generally favorable report on the 150s?Shot at 600yds in F-class match. Light head winds with heavy mirage/switching R-L-R. I had problems with vertical in the first string but that was me....rear bag issues. A bit better vertical on second string but I was not focused on subtle wind changes and dropped a couple. Third string all came together but conditions worsened and still dropped two. X-count was lower than my usual. I was not on my game but I also feel that my load is not optimum...maybe
Sounds like you will improve as you use them more and most dropped points were on you.
Thanks for posting your results.
Hey man...thats how the wind blows! Sounds like you are getting a handle on it! A week ago I fought the wind switches as well! Once we get use to it...the higher BC should help out! The hold is certainly different when you are used to shooting 130's and 140's. Like you guys...this is very reason i'm continuing to work with this bullet...I think we will all get there!Shot at 600yds in F-class match. Light head winds with heavy mirage/switching R-L-R. I had problems with vertical in the first string but that was me....rear bag issues. A bit better vertical on second string but I was not focused on subtle wind changes and dropped a couple. Third string all came together but conditions worsened and still dropped two. X-count was lower than my usual. I was not on my game but I also feel that my load is not optimum...maybe
I have finally nailed down some hard data with my 6.5 GWI. A little background for those that haven't followed this thread from the beginning. This is a re-formed 6.5x55 Swede with a 30* shoulder and a lot of the body taper taken out of it. It's comparable to the 6.5BJAI and the 6.5-284 cartridges in case capacity.
I shot these groups this morning, temp. 87* and climbing. Overcast with -0- wind. Bullet was the SMK 150gr. out of a Bartlein 7.5 twist 5R barrel @ 32". Bullets were loaded at .010 off the lands as recommended by several other shooters on here and were moly coated.
I'll be the first to admit that I'm not a BR shooter and that my bench manners leave a lot to be desired. With that said, these groups and corresponding data will work well for me as a sling shooter.
This bullet has already been pushed in excess of 3,100 fps. from this rifle without bullet failure, but both accuracy and case life were less that desirable. These numbers suggest that it will shoot inside my 284 Shehane at 2,910 fps. with 183 SMK's. I won't have the opportunity to take this combination to 1K until 8/4/18 but will report back after that date.
I hope this helps,
Lloyd
I shot these groups this morning, temp. 87* and climbing. Overcast with -0- wind. Bullet was the SMK 150gr. out of a Bartlein 7.5 twist 5R barrel @ 32". Bullets were loaded at .010 off the lands as recommended by several other shooters on here and were moly coated.
I'll be the first to admit that I'm not a BR shooter and that my bench manners leave a lot to be desired. With that said, these groups and corresponding data will work well for me as a sling shooter.
This bullet has already been pushed in excess of 3,100 fps. from this rifle without bullet failure, but both accuracy and case life were less that desirable. These numbers suggest that it will shoot inside my 284 Shehane at 2,910 fps. with 183 SMK's. I won't have the opportunity to take this combination to 1K until 8/4/18 but will report back after that date.
I hope this helps,
Lloyd
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Very good! Awesome numbers!
wboggs
Gold $$ Contributor
Just what we need. This puts my mind to rest about bullet blow up at the 3000fps range with a 7.5 5r barrel. Standard rifling might be different. By the way, your bench skills look pretty good to me.
Thanks for posting and adding to the knowledge base.
Bill
Yes, even though H-4831sc was my go to powder with 140 class bullets for years, it wasn’t accurate with the 150 bullets.
Lloyd
wboggs
Gold $$ Contributor
New data on 150 smks in 6.5 PRC.
Loads with H1000, Hornady brass, 30" Bartlein 5r 7.5t, 0.015" off. Temp 85F, 100yds
Fed 210 m
56.5 gr 2963
57.5. 3008
58. 3053
58.5. 3075
59. 3116. 5/16
Fed 215m
58 3101
58.5 3104
59. 3140. 5/8
Low single digit sd and extreme spread of less than 20 in all 210m loads. Only a small amt of head expansion ar top load of 59 grs.
No sign of bullet failure in any load.
The bullets are accurate with no signs of failure in a 7.5 5R up to approximately 3150 fps. Accuracy improved as powder charge was increased. I think a 3200fps load could be reached with RL26 but I'm not sure it is necessary since H1000 shoots so well.
Next step will be to fine tune seating depth and increase range.
I think top shooters could be very competitive with the 180 and 184 Bergers used by the 284 shooters.
Hope this data helps.
Bill
I tested again this morning as well! Calm conditions! Very slight headwind! 26" 8tw Kreiger, 6.5 x 284, 150SMK, .005 off, CCI200 primer. I stepped it up a bit...all once fired brass...55.5 gr H1000 gave 2927 and shot a couple of groups 1.250" and 1.370"...56.0 gr H1000 gave 2952 with slightly larger groups and slightly stiff bolt. The hotter load had slightly more vertical. Overall I'm pleased because it seems to be consistent. It is stabilizing the bullet very well with perfectly round holes. I will play with loads in the 55.5 range and also seating depth and see if I can tighten it up. My 6.5 x 55 and this 6.5 x 284 are both shooting the 150 very well, although I am still using H4350 in the Swede. I have less vertical with the Swede and it shoots a little better groups at 300. The groups with Swede open up considerably at 600 and 1,000. I do good at those ranges to shoot consistently at half moa. I'm still hoping to get there with 6.5 x 284 and H1000 with 150 bullet. The 2920 range looks promising and possibly some extended life. Thanks for the input from you guys! You have all been very helpful!
By the way....I should have mentioned these were 5 sh groups!
I also have a quick question for you guys on bearing surface! If my measurements are correct the 150SMK has brg surf of about .470" which is real close to 142SMK. The 147 ELDM is around .530 and the 140 Hyb is .413 according to Berger data. Shooting 10-15 shot strings have any of you noticed a major difference in barrel fouling, accuracy or excessive vertical with any of these bullets. I have one gun that shoots 147 very well but I have not shot it 1,000 where we shoot 15 shot strings. This is another thing I like about 150 is that it has a little shorter brg surf. What have you experienced?
Thanks for comments!
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wboggs
Gold $$ Contributor
I'm only shooting 3 shot groups at this stage of development. Only about 40 rounds through barrel so far.
Bill
Thanks Bill, I edited my last post if you did not see! Thx
wboggs
Gold $$ Contributor
The 150 is extremely close to the 142 in bo and bearing surface. The additional weight is in the nose forward of the ogive. You hardly have to adjust the seating stem when you change from 142 to 150. Overall length is longer but base of case to seated bullet ogive is very close.
Bill
Yes sir, I noticed that on the Swede! Thx
Glad to see your also getting good news with the H1000. My barrel is a 30" Broughton barrel. Seems to be faster than most of my 6.5 barrels. Easily getting 3000+ with zero pressure signs. Accuracy is excellent.
wboggs
Gold $$ Contributor
I would baby that barrel. Bill
It's close to the grave. Has about 1200 already thru it. Still holding it's own tho.
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