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spiddle86
10-24-2013, 11:35 PM
Hello all! I'm new to this forum and have been casting for a few calibers over the recent years. I picked up a Herters #25100 mold a bit ago to try in my Rem 700 .25/06 BDL. My problem....6" groups at best today @100 yards. My alloy is a fairly hard amalgam of wheel weights and Linotype. I'm using a variant of the saeco Cali green lube and leading isn't an issue. Gas checks are applied and I'm sizing @.260". I've worked with green dot 11.5 grs to 14.5 grs and blue dot 18-19 grs and seating right off the lands. The mold drops 99.5 gr .262" boolits. WLR primers and W-W brass as well. I didn't chrono anything today and should have. Anyone had any success putting the cast boolit speed limit on this caliber?

grouch
10-25-2013, 12:47 AM
I shoot a 257 Roberts with a 90gr mold, flat nose, long bearing, my offhand load is 10gr of H110 hand lubed with moly grease. My alloy is clip on wheel weights with 2% tin air cooled. The rifle is equipped with good double aperture sights, and in calm weather I often get 5 shot 1" groups at 100 yds. A good 25 06 should shoot cast acceptably well.
You could possibly get accuracy at higher velocity by water dropping the bullets. Also, good accuracy should be attainable by working up a load with slower powder with a starting load at 80% of listed starting loads for jacketed bullets.

Grouch

texassako
10-25-2013, 11:08 AM
I think the Herter's #25100 is one of those pointy designs, if I am not mistaken, that start to tip in the bore when pushed hard. I would try slowing it down to see if groups tighten up.

451whitworth
10-25-2013, 02:52 PM
I have been shooting a LBT 25-100 LFN out of my M99 250-3000 @ 2400fps. It chambers a .262" diameter bullet and i oven heat treat them. Load is either 22.0gr. RL-7 or 21.0gr. IMR4198 with shotshell buffer over the powder.

leadman
10-25-2013, 11:51 PM
Either water quench or heat treat your boolits. I would reduce the Blue Dot load to 14grs and work up. Have you checked the size of the throat of your barrel? I shoot two 25 cal rifles with cast and size both to .258".

runfiverun
10-25-2013, 11:57 PM
if they are pointy back the speed down, they will shoot accurately just not fast.
try for about 1600 fps and then come up a tick at a time.

spiddle86
11-01-2013, 11:54 PM
After working down a bit with Blue Dot 1600 seemed to be the sweet spot. Sub 2 moa @100. Thx!

Newtire
11-04-2013, 12:28 AM
I shoot a .257 AI and find that the sized diameter it likes is .258"; .262 might be a little big. If that boolit is a pointed design, those don't like being pushed and could never get these types to shoot real good at any kind of higher velocity. At lower velocity, they are fine. I sold away a Lyman I had like that in .25 caliber as well as my 30 caliber design.

Try the nose to see if it fits the bore or wobbles around in there. Quite a few things that could be causing inaccuracy problems so you just have to sort them out one at a time and you will have fun with that .25-06.

I keep plugging away at my .257 AI in between bouts of insanity with 6.5 mm's and lately, a .58 cal M/L .

The RCBS 120 grain shoots real nice in my rifle but not as good as it could as the nose is too small. I have a 257312, a Cramer 100 grain round nose, a Lyman 74 grain meant for the .25-20, and a Ranch Dog design. Gonna have to spend a little time with those to see how they all do.

Just today, at the Filer gun show, I picked up a Cramer/Saeco 55 with one cavity hollow pointed. I hope to have some time to test this thing out one of these days.

I have had good luck with those boolits weighing from 100-120 grains using SR4759, H-4198, Reloder #7 at around 1800-1900 FPS. The .25-06 and the .257 AI are very close, so my loads should work pretty good in your .25-06. If you need some loads, shoot me an IM. Happy to share.

Keep us posted on how you do.