Shiloh Rifle Forums

Hi Folks,
I’ll be shooting my first long range match at the end of the month, the Creedmoor match put on by Rick Weber in Oak Ridge TN. I’ll be shooting at 800 and 1000 yards and would like to get some sight setting of actual instead of ballistic program numbers to get onto the paper or close to. Here are the particulars.
Browning/Miroku 1885 BPCR .45-70, RH twist
Scope, DZ Arms 8x, scope base separation 7.2” front base height .180” rear base height.375”.
Bullet, paper patch slick elliptical, 16:1 530gns, at 1275 FPS MV.
Thanks so much this will be a great help as I have no way to get the actual elevation and drift numbers before the match.
I’ll post this question on one other sight too.
Thanks again,
Richard

No way to give you exact numbers, but if you have a 200 yard elevation you'll likely need to come up 100 pts. to get to 800 and another 40 to make 1000.
Windage will be determined by the conditions at the time.
So be mindful of you sighter shots.
Good luck

Richard

I use the DZ scope with the same blocks and spacing. But I have it on my .45-90 and I use a load at 1285 fps with the same weight elliptical.
These settings should get you close enough for a slight sight setting.
2 O-Clock winds 6 to 8 mph winds,
800-330
900-365
1000-410

Richard

Disregard my settings. I just measured my blocks and they are .185" .300"
My .40-65 has the .180" .375"

Kurt

With the scope blockslisted on my rifle and using DZ Arms Unertyl style mounts with the elevation screw all the way to its lowest point, I could not get on paper at two hundred yards...I was hitting about three feet high at that range. Tomorrow I’ll but a dial indicator of the scope and check to see what the actual movement of the scope is in thousandths of an inch compared to the scope mount divisions are. They are listed at 1/2 MOA per division. I may well be able to calculate what I need from your comeups Kurt. I know there are many variables but any numbers give me a ball park idea. Thanks you Don and Kurt
Thanks Richard

Without a known yardage setting, it's going to be a pretty tough row to hoe, jumping into a long range match.
Your best bet would be if you could at least get to a silhouette range and find a setting on the rams,600 yards is usually about 3-5 minutes above the rams.
Then figure about 15 minutes per hundred yards come up from there.
But on the bright side, by the end of the match you will of learned a lot.

flatsguide, In my early days of shooting LR, I would use a ballistic program to guess what my 800 yard elevation would be. The problem is you will need at least two verified elevation setting for two yardages.
I used 225, 325, & 625 yard settings [our gongs are set behind our target frames about 25 yards]. With this info and some time running the computer to make the ballistic calculator match the elevation/ ranges that I know,
the calculated 800 yard elevation was only off a couple of minutes. On any given day, the elevation can change 3-5 minutes, depending on wind conditions.

Once you shoot that 800 yard target, then go to the rule of thumb, Don McDowell posted; up 20 minutes for the 900 yard target and up 20 minutes from the 900 yard setting for the 1K.

Keep on hav'n fun!
MikeT

Richard,

Here are some come ups DZ has listed with your block combinations. They are for a .45-90 but with the velocity you listed they should be close. You will dirt or get a value marker on the paper.

https://www.dzhepburn.com/sights/dz-arms-scopes/

I now have three DZ scope with different block combinations at 7.2" spacing. I checked the graduations on those mounts and the each is on at 1/2 MOA, 2 marks will move the impact 2" at 200 yards, or as close as I can hold

Flatsguide,
The heights of your blocks are wrong. For a rifle with a scope on 7.2" centers, you need about a .150" difference to make things work. I have .225" on the front and a .375" in the rear. That keeps my ranges (200yds - 1000 yd) pretty evenly centered in the rear ring. That gives me a little room at the bottom when set at 200 yds and some room at the top when at a 1000 yds. With 7.2 " centers, each .002" is equal to one minute of elevation. Each full revolution of your mount is then 12 1/2 minutes. My 200 yd setting is 36 which may get you close or not. Barrel taper can make a difference as well as how similar our mounts are. It will be quite helpful for you to get a zero on the windage at 200 yds before you go. This depends on how well your mount has been made and how accurate your scope blocks have been mounted. There are two small screws on the mounts turret that can be loosened so that you can rotate to zero once you have the rifle sighted in. Good luck and sounds like a fun match.

flatsguide wrote: ↑Mon Oct 04, 2021 9:25 am I’ll be shooting my first long range match at the end of the month, the Creedmoor match put on by Rick Weber in Oak Ridge TN. I’ll be shooting at 800 and 1000 yards and would like to get some sight setting …

Double check the distances fired at - I thought Rick’s shoot was at 300, 600 and 1,000 yards this year. You don’t want to be turning up with settings for 800 only find you’re at 600 yards.

David

David is correct, the course of fire is 300 and 1000 supported on Friday, 600 and 1000 unsupported on Saturday.
I would suggest a lower block on the rear so that you can get the scope adjusted down to 300, and if the rifle still has the front sight mounted, take it out so it doesn't fuzz up the sight picture at 1000.

Thanks for the correction of course of fire. I mounted a .325 block and I’m zeroed at 200 yards using a elevation setting of .012.
Thanks for the help!
Cheers Richard

Have fun. Target rifle is IMHO the best of the bpcr venues

Yep. BPTR is a great competition. Only thing better is BPCR silhouette. Can't go wrong with either one.