Anyone shooting 7 WSM?
- Thread starter 82boy
- Start date
Johnny Burke uses a 7mm WSM in his Light gun (& sometimes HG?). He doesn't post to BR Central, but you can follow his match successes at
http://internationalbenchrest.com/results/long_range/index.php
Go to all the Camp Butner matches & look for Johnny Burke. Here's the first one:
http://internationalbenchrest.com/results/long_range/2011/NC1000/Matches/M1.php
Oddly enough, I was sitting next to Johnny at the Banquet last Sat, and he mentioned he wished it was a .30 WSM, like his HG -- at least, by later in the year he was shooting a .30 in HG. You gotta be careful of the equipment lists. By Match 9, I believe Johnny's data was correct
http://internationalbenchrest.com/results/long_range/2011/NC1000/Matches/M9.php
As I remember, Johnny has done well with both his WSMs, the 7mm and the .30.
If you want to talk to him, I'll send him an email & see if he'd be willing to take a call or email from you.
Charles
P.S. If Rel-22 was giving issues, I'd also try H-4831.
http://internationalbenchrest.com/results/long_range/index.php
Go to all the Camp Butner matches & look for Johnny Burke. Here's the first one:
http://internationalbenchrest.com/results/long_range/2011/NC1000/Matches/M1.php
Oddly enough, I was sitting next to Johnny at the Banquet last Sat, and he mentioned he wished it was a .30 WSM, like his HG -- at least, by later in the year he was shooting a .30 in HG. You gotta be careful of the equipment lists. By Match 9, I believe Johnny's data was correct
http://internationalbenchrest.com/results/long_range/2011/NC1000/Matches/M9.php
As I remember, Johnny has done well with both his WSMs, the 7mm and the .30.
If you want to talk to him, I'll send him an email & see if he'd be willing to take a call or email from you.
Charles
P.S. If Rel-22 was giving issues, I'd also try H-4831.
Boyd Allen
Active member
A friend has has good results with a very accurate custom hunting rifle in that caliber, with H1000, 175 SMKs, 215s and annealed Winchester brass (done fore more uniform bump, on fairly new brass) With a shorter barrel than is usual for a benchrest rifle, he has found accuracy at 2,950. With a longer tube, I expect that a higher node would be no problem.
R.G. Robinett
"That'll never work."
Don't overlook Hodgdon Hybrid-100V - especially if you barrel is "throated" long enough to keep the bullet base in the neck, accommodating, getting "enough" powder into the cases, "to make it work".
RG
RG
82boy
Patrick Kennedy
Don't overlook Hodgdon Hybrid-100V - especially if you barrel is "throated" long enough to keep the bullet base in the neck, accommodating, getting "enough" powder into the cases, "to make it work".
Hey RG I have a bunch of that hybrisd 100v powder just sitting around but no one has data on it. Any idea what a start weight would be?
R.G. Robinett
"That'll never work."
Pat, yeah, I hear ya!
The data is spotty, AND amazingly anemic! It appears that Hodgdon " gives up" [on charge weight] due to volume/compression (bullets seated to SAAMI Spec. depth), as opposed to pressure. I have tried this powder in numerous smaller/mid-sized cases/calibers, with heavy for caliber bullets, with excellent precision, but poor (low) velocities.
Last Sept., I tried it in the .300WSMs, where, it proved GREAT: very acceptable precision, and unexpectedly GOOD velocity - my 165 BTs, at 3250 FPS (24" barrels) . . . and no signs/symptoms of excessive pressure!
I don't have access to my data book just now, but, I was WAY over the Hodgdon [load-book] maximum - again, I suspect that they stopped due to powder compression, as opposed to pressure . . . though, as I recall, the pressure (either PSI,or, CUP) was listed. I fired three cases repeatedly (about 8 times, as I recall) and the primer-pockets remained tight, and, just above the extractor-groove, the cases remained constant and acceptable in diameter. None of my loading manuals list anywhere NEAR what the old [reliable] Oehler said was happening - and some (most) don't list the Hybrid H-100V at all. And, on that same day, we chronographed several other cartridges/loads, of known performance, which correlated nicely to previous chrono sessions.
I won't put my charge weights in public - start with some load manual data and be prepared to "work-up", looking for the usual pressure symptoms. My reamer is 'throated' to place the BT base just at the [outside] neck/shoulder junction - lots of powder space!
Again, in every case, this number has delivered excellent precision, but, in the smaller cases, less than expected velocity - usually about 150 -200 FPS behind H-4350; IMR 4007; H-4831; etc. But, in the WSM, with 165 Gr. bullets, the stuff, "came into it's own!" I therefore suspect that it will perform nicely in the 7MM version. I have a 7MM DAKOTA reamer on the way - I'm hoping that the H-100V will work in that also . . . I counting on < .25 MOA and "some velocity" too! RG
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I've always used about 66gn of Reloader 25 with the 180gn Berger (work up slowly as RL25 can vary in speed from batch to batch)
A lot of the F Class shooters use Vit 165 but it didn't work for me.
Vince (UK)
I'd start five thou. off the lands - then try moving the bullet forward in five thou. increments. I ended up about 7 thou. into the lands.
Vince
D
Danny Brooks
Guest
I tried the 7WSM awhile back. The powder that gave me the best results was N165. But I also wore out two barrels prematurely. The average life of the barrel was 475 rounds. Loads were pushing the 180 VLDs around 2950, where they should be. Be very careful and don,t expect more than that, plus be ready to set the barrel back and you might get about 800 rounds of barrel life. Maybe.
With my 300WSM, I had over 4500 rounds of barrel life on the first barrel and it was still competitive. Go figure.
Good luck,
Danny
With my 300WSM, I had over 4500 rounds of barrel life on the first barrel and it was still competitive. Go figure.
Good luck,
Danny
D
Danny Brooks
Guest
I am hoping to shoot some and play that silly little game also.
Getting back to the original topic, there was a discussion some time back where I chronicled the entire episode of my LG in 7WSM. The case is just too much capacity for 7mm and burns the barrel out way to fast. Even with slower powders. You may be able to find the thread in the archives of this forum.
Danny
Getting back to the original topic, there was a discussion some time back where I chronicled the entire episode of my LG in 7WSM. The case is just too much capacity for 7mm and burns the barrel out way to fast. Even with slower powders. You may be able to find the thread in the archives of this forum.
Danny
expiper
Broken down Plumber
Danny.....that is very unusual bbl life.....most people are bragging about round counts aproaching 2000,,!!!.....what brand and type of bbls were you using.???...the 7 WSM is being shot more every day in F-class with good results....and lots are using N-165,,,,,,I have great life with my Krieger bbl ...around 1500 rds and shootin beter than ever....Roger
D
Danny Brooks
Guest
Roger,
I used a Lilja on the first go around and a Spencer on the 2nd. The powders were the slowest I could find, Retumbo, H1000, H4831, N560, and N165. N165 gave the best results overall. And I only used 210 primers. Both barrels burnt out so quickly that I was at a loss as to what do to prevent the same thing happening to a 3rd barrel. Afetr much discussion with a few people whose opinions I valued, I tookthegun back to Clay Spencer and he asked what was wrong and I told the hole down the center of the tube needed to be bigger.
I had high hopes for the 7WSM as I had great luck with the 7mm Rem mag a few years before, but it to also had a short barrel life compared to my 300 Win Mags, which usually got 2200+ rounds of life. The rem Mag went out at about 1200 rounds. I shot another 200 trying figure out what was wrong.
The 300 WSM gives great barrel life and I was hoping for the same on the 7WSM. Alos, I spoke with several guys at the PA club who were setting their barrels back at 400 rounds. So I was not alone in the experience.
I still think I have some nice Redding Type-S dies that I would sell if anyone is interested. I know that I am not going to use them, unless someone asks me to work up a load for one.
That is it in a nut shell.
Danny
I used a Lilja on the first go around and a Spencer on the 2nd. The powders were the slowest I could find, Retumbo, H1000, H4831, N560, and N165. N165 gave the best results overall. And I only used 210 primers. Both barrels burnt out so quickly that I was at a loss as to what do to prevent the same thing happening to a 3rd barrel. Afetr much discussion with a few people whose opinions I valued, I tookthegun back to Clay Spencer and he asked what was wrong and I told the hole down the center of the tube needed to be bigger.
I had high hopes for the 7WSM as I had great luck with the 7mm Rem mag a few years before, but it to also had a short barrel life compared to my 300 Win Mags, which usually got 2200+ rounds of life. The rem Mag went out at about 1200 rounds. I shot another 200 trying figure out what was wrong.
The 300 WSM gives great barrel life and I was hoping for the same on the 7WSM. Alos, I spoke with several guys at the PA club who were setting their barrels back at 400 rounds. So I was not alone in the experience.
I still think I have some nice Redding Type-S dies that I would sell if anyone is interested. I know that I am not going to use them, unless someone asks me to work up a load for one.
That is it in a nut shell.
Danny