Im shooting 535 gr grease groove and paper patch bullets from a 45-90 using 84 grs. of Olde Eynsford with patched bullets and 82 with greasers at around 1340 fps.
45-70 using the same bullets and 70 gr of OE 2f does right at 1275.
44-77 shooting a 460 gr patched bullet ahead of 77 gr. of OE 1  1/2 runs right at 1300 fps.

Ranch 13 in your 45-90 what powder are you using 1 1/2 or 2F in OE?

Doing some load development and right now, I'm using 1 1/2 Swiss with a 560 grain bullet, no chrono data yet, but seems to shoot good.

Choosing a bullet like the Postell is a good start but when it comes to an accurate load you have to try to keep your extreme spread as small as possible. At a thousand yards you have to keep your vertical within 1-2 MOA. If not, you're going to have too many shots over or under the target  Filling a case with powder and trying it is the only way you will be able to determine if you have a good load. Just because you use data from somebody else is not going to make it shoot. You'll have to find out at the line. I have found that more importantly is fouling control.  I was bound and determined to shoot  blow tubing and it worked well until about the 10th-12th shot. Then, as my barrel heated up I could see my vertical go to hell.  That's when I started having high and low misses.  Make sure you wipe with a good mix of a solution with water.  Any kind will work but keep it consistent within your barrel.  Bob

gunlaker wrote on Jun 21^st, 2018 at 9:27am:


This is true. The game has evolved some from blunter Creedmoor design bullets with low 0.4's for a Bc. And the velocity back then as today has always been to go as fast as you can with accuracy to hold the vertical impacts at the target to hold the least that conditions will allow. The very best loads under the very best conditions will hold the X ring (vertical) at 8 - 1000yds but even though you and the rifle/load are capable of doing it, conditions rarely allow these kind of scores.
It's a tough game. 

That was a little long winded. What I really started out to say to Joe, the OP is .... I am not sure what you are trying to do with the data but I am interested. 

I have more than a little time in this game.

Over the last 25 years or more, the BPTR revival has produced winners shooting both lower end 0.4 Bc bullets at 1250fps, and more recent bullet designs bullets of 0.5 plus a few points Bc paired with the velocity in the 1300 to almost 1400 range.
Always, less vertical at target, less wind drift, less spin drift and better accuracy drive the improvements and often these variables are at odds with themselves. 

Longer and longer bullets in faster twists reach a point of diminished return and then fail. Stability rules. Sometimes and in some conditions with this, shorter is better.

It can be an eye opener to shoot a long, heavy, high Bc bullet pushed hard in a fast twist barrel in switchy winds (the bullet sees wind sheer) only to learn the slight yaw and bumpy ride to the target lowered the bullet's Bc and stability and your once accurate calm day load is spraying all over the catch berm. 

Joe, I would be interested in learning what it is you are doing.

CW wrote on Jun 21^st, 2018 at 10:04am:


I'm testing .22 jacketed with 5.5-8.5 Titegroup, trying to understand why cast are not as accurate as jacketed. 55 gr bthpm at 8.5 are going > 1750 fps. Perhaps these are reasonable @ 1000 yards-compared to current BPCR thought. 

Happy to send EXCEL workbooks with data so far,  ~ 4000 shots fired.

Thanks;
joe b.

GrumpyBear wrote on Jun 21^st, 2018 at 5:26am:


I'm using 1 1/2 OE in Jamison cases.
My shooting pardner uses 85 gr 2f OE in starline, but he also uses a news print wad over the flash hole, a 060 card wad, a grease cookie and a wax paper wad under his patched bullets. He also runs 88 gr. Swiss 1 1/2 from time to time, both powders he uses rp 91/2 primers.

joeb33050 wrote on Jun 21^st, 2018 at 10:27am:


Jacket Performance With Cast Bullets by Veral Smith is a good place to start that kind of research.