cloverleaf
Handloader
- Sep 10, 2006
- 4,386
- 1,031
Beautiful rifles are something special when you know the history. Hope you can add to it with some memories and stories of your own! CL
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I did a little research on the old rifle and found this about Brownell.Ya done good and CONGRATULATIONS!!! I think those are probably the best fleurs I’ve ever seen on a custom rifle and the deep relief in the checking is something reminiscent of an Al Biesen rifle! That dog will hunt, and it’s in 7 mag to boot!
V/R,
Joe
Scotty,I did a little research on the old rifle and found this about Brownell.
He build this rifle in 1965.
I had something happen with it that I never had happen with the handful of 7 mags I have had over the years. I had a box of 160 Trophy Bonded Tipped and it made egg shaped holes. It honestly threw me for a loop. I shot 3 more and had the same egg shaped holes. Well, I had another box of Federal 155 TA's and thought to myself these will do the same darned thing, to my surprise, they neatly hammered into a 3/4-7/8"s group(nice round holes). The only difference between the two bullets on paper were the 155's were about .010" shorter but nearly 150FPS faster.. So the extra speed helped stabilize them. I loaded up 5 - 150 grain Nosler BT's with some N160 I had and I adjusted the old Leupold. Well the first shot stayed where it was then the next for must've taken adjustment and moved on point and all were in the same hole.
I have been busy lately, but I have a sneaking suspicion it's a 1-10 barrel on it, which makes sense, since in 1965 we didn't have the awesome bullets we have today and they were also much shorter than our poly tippled, boattail bullets we use today. It seemed pretty common back then to use just enough twist to stabilize the bullets to minimize the inconsistencies of the older bullets..
Not a big deal honestly, knowing the length of bullets and using Bergers Stability calculator has helped me pick some other bullets out and of course keeping speed somewhat up there will help to some extent.
I'll see if I can get some pictures of my egg shaped groups up.
Yup, it wants the old shorties.. Which is A-Ok with me. Need to steal some of Guy's loads. Heard he might have a few good ones to try that should work in this old Patched Round Ball twisted rifle!
Sounds like you are making good progress. I look forward to further reports.I did a little research on the old rifle and found this about Brownell.
He build this rifle in 1965.
I had something happen with it that I never had happen with the handful of 7 mags I have had over the years. I had a box of 160 Trophy Bonded Tipped and it made egg shaped holes. It honestly threw me for a loop. I shot 3 more and had the same egg shaped holes. Well, I had another box of Federal 155 TA's and thought to myself these will do the same darned thing, to my surprise, they neatly hammered into a 3/4-7/8"s group(nice round holes). The only difference between the two bullets on paper were the 155's were about .010" shorter but nearly 150FPS faster.. So the extra speed helped stabilize them. I loaded up 5 - 150 grain Nosler BT's with some N160 I had and I adjusted the old Leupold. Well the first shot stayed where it was then the next for must've taken adjustment and moved on point and all were in the same hole.
I have been busy lately, but I have a sneaking suspicion it's a 1-10 barrel on it, which makes sense, since in 1965 we didn't have the awesome bullets we have today and they were also much shorter than our poly tippled, boattail bullets we use today. It seemed pretty common back then to use just enough twist to stabilize the bullets to minimize the inconsistencies of the older bullets..
Not a big deal honestly, knowing the length of bullets and using Bergers Stability calculator has helped me pick some other bullets out and of course keeping speed somewhat up there will help to some extent.
I'll see if I can get some pictures of my egg shaped groups up.
Did you ever run into that much when you were doing alot of loading Mike. I have seen it with 22 caliber and some 243s in the past when bullets got too long but it's a first with a 7mm.Fascinating. I appreciated the diagnosis. It was some excellent analysis.
They still do, if memory serves me well. I have an acquaintance who just acquired a 7mm wby and loaded up to a 175gr ABLR in his 1:10. Though I suspect that he's marginally stable at that.Weatherby still used a 1-10 twist not too long ago in their 7mm Wby rifles. Now I don't wonder why they never loaded anything real long.
Saw it so infrequently that it hardly registered. On the other hand, I was doing a lot of work with custom rifles that were designed with the ultimate bullet that would be used.Did you ever run into that much when you were doing alot of loading Mike. I have seen it with 22 caliber and some 243s in the past when bullets got too long but it's a first with a 7mm.
Weatherby still used a 1-10 twist not too long ago in their 7mm Wby rifles. Now I don't wonder why they never loaded anything real long.
That makes sense. Looking back to 1960's bullet tech is a decent leap for me to look and see what was available.Saw it so infrequently that it hardly registered. On the other hand, I was doing a lot of work with custom rifles that were designed with the ultimate bullet that would be used.
The 160 gr PT would be a good one. Running it at 3050-3100 fps, it would shoot flat, hit hard and penetrate deep on deer, elk or moose.Yup, it wants the old shorties.. Which is A-Ok with me. Need to steal some of Guy's loads. Heard he might have a few good ones to try that should work in this old Patched Round Ball twisted rifle!
I have a ton of those and 160 BBC's that I can load up soon. The 160 in a 7 Rem at 3000+ has always been my gold standard for hunting. I am really enjoying working with this old rifle.The 160 gr PT would be a good one. Running it at 3050-3100 fps, it would shoot flat, hit hard and penetrate deep on deer, elk or moose.
JD338