250 GNR... In my haste to work the 25-20...

Huey
[subject]
Friday, February 23, 2018, 08:11 (2253 days ago)

The 250 GNR cylinder was overlooked until this morning.

The first thing I learned is the 1 in 10" builds pressure faster than the 1 in 14". But, anyone experienced in ballistics expects that.

But, the second thing I learned was terrific.

Obviously, Gary's guys cut the window for the longer 25-20. This allows 1/10" more nose room than my first 250 GNR.

This allowed the use of bullets intended for rifles. My examples were the Sierra 75 grn HP and 70 grn Blitzking. Also, the Hornady 75 grn HP. The 1 in 10" twist stabilized the longer bullets even at longer ranges.

They all three worked great. But, the 70 grn Blitzking (Poly Tipped) stood out.

They shot tiny groups and laser straight out to 75 yards. I'm sure farther, but my revolver range is limited to 75 yards.

At 25 yards, they completely destroy a soda can filled with water. Will be interesting to try on game.

Cool! I had issues ejecting loaded pointy SA revolver rounds

WB
[subject]
Friday, February 23, 2018, 10:36 (2253 days ago) @ Huey

The ejector rod tip wedged in the chamber between the tapered projectile tip and chamber wall. I found that by grinding a totally flat tip on the ejector rot end I got a little bite on the bullet tip (.300 GNR) and it popped the rounds out much better. FWIW.

I also found that those pointy bullets, even the varmint explosive types, intended for near 4000 fps speeds are tough. My FA .224-32 even at 2200 fps did not expand too much on the little Muntjac. I used the Nosler 40 gr. BT. Just one test.

Favorite 25-20 small game load found today...

Huey
[subject]
Friday, February 23, 2018, 11:00 (2253 days ago) @ WB

4.5 grns of Unique behind an 85 grn Hard Cast produced 1250 fps. Cases fall out and don't even need to be resized.

Noise level about the same as a 22 Magnum.

Sounds sweet, I bet I can use that for the .255 Banshee.

WB
[subject]
Friday, February 23, 2018, 11:55 (2253 days ago) @ Huey

- No text -

No doubt. It came from my ultra modern 80+ year old..

Huey
[subject]
Friday, February 23, 2018, 12:06 (2253 days ago) @ WB

Phil Sharpe loading manual. Fixing to load some and see how they group. I usually do pressure testing and chronographing first.

I'll report back in a bit...

powered by my little forum