257 WBY

reynolds357 · October 20, 2018, 08:00 AM

I discovered a strange phenomenon yesterday on my range. I was shooting my 257 Roy at 200 yds. 85 gr bonded Norma spire points chronoed at 3800 to 3840 at 10 yds. I was shooting A500 plate. I have shot these plates with 300 win mag, 338 lapua, 7 Rum, 264 win mag, and a host of others. This particular plate has been shot with 300 win mag and 264 win mag. I have never shot through these plates with anything not steel core. Well yesterday I thought the 257 Roy was acting anemic. It barely moved the plate. After 3 shots, I walked down to inspect it. 3 shots, 3 clean blow throughs. I would have never in 1000 years dreamed a 85 gr bonded soft point would do that.

Three44s · October 20, 2018, 08:19 AM

Hmm,

I oughta try dat with my 257 STW!

Maybe it will be the military’s mini tank killer?

Perhaps the Norma bullet has some real juice there?

Best regards

Three44s

reynolds357 · October 20, 2018, 08:44 AM

I am thinking either the bullet or the velocity is key. 100gr Scirrocco II bullets splatter like 22lr on the same plate. The Norma expands well. I have shot several deer with it and have always had quarter sized exit wounds.

zeke · October 20, 2018, 09:45 AM

Velocity,smaller dia and bullet construction. Although very surprised it would go through AR 500 steel at 500 yards. Shot some plate years ago with 257 wby Barnes bullets at 100 yds, it was like copper inserts in the plate.

LineStretcher · October 20, 2018, 09:59 AM

3000 ft lbs of energy will do that..LOL

std7mag · October 20, 2018, 10:39 AM

I've done the same, but different...
130gr Speer SPBT at 300 yards. But i've found only if target is solid. If it's allowed to swing it won't do it.
Same with 243 Win and 105gr Hornady Match over a charge of RL26 at 200 yards.

dvdcrr · October 20, 2018, 01:11 PM

dang!

reynolds357 · October 20, 2018, 02:53 PM

Quote:

I've done the same, but different...
130gr Speer SPBT at 300 yards. But i've found only if target is solid. If it's allowed to swing it won't do it.
Same with 243 Win and 105gr Hornady Match over a charge of RL26 at 200 yards.

This is a swinger.

bacardisteve · October 20, 2018, 04:54 PM

22-250 is a steel killer as well. It's the velocity that does it.

Scorch · October 20, 2018, 04:55 PM

I've done similar with a 22-250 with 50 gr at 3,900 fps. Looked like someone took a dull drill to 1/2" boiler plate. Bullet energy and small frontal surface area will do that.

reynolds357 · October 20, 2018, 07:46 PM

Yeah, velocity penetrates, but still hard to believe it's clean punching something a 300 gr 338 Lapua is barely denting.

Mobuck · October 21, 2018, 07:12 AM

Those soft varmint bullets punch through cold rolled plate like a shaped charge AP projo.
I've seen several instances of a .224 HP bullet punching a clean .30 cal hole through 3/8" plate @ 100 yards and the plate hardly moves from the impact.

October 20, 2018, 08:00 AM	#1
reynolds357 Senior Member Join Date: December 10, 2012 Posts: 6,165	257 WBY I discovered a strange phenomenon yesterday on my range. I was shooting my 257 Roy at 200 yds. 85 gr bonded Norma spire points chronoed at 3800 to 3840 at 10 yds. I was shooting A500 plate. I have shot these plates with 300 win mag, 338 lapua, 7 Rum, 264 win mag, and a host of others. This particular plate has been shot with 300 win mag and 264 win mag. I have never shot through these plates with anything not steel core. Well yesterday I thought the 257 Roy was acting anemic. It barely moved the plate. After 3 shots, I walked down to inspect it. 3 shots, 3 clean blow throughs. I would have never in 1000 years dreamed a 85 gr bonded soft point would do that.

October 20, 2018, 10:39 AM	#6
std7mag Senior Member Join Date: June 23, 2013 Location: Central Taxylvania.. Posts: 3,609	I've done the same, but different... 130gr Speer SPBT at 300 yards. But i've found only if target is solid. If it's allowed to swing it won't do it. Same with 243 Win and 105gr Hornady Match over a charge of RL26 at 200 yards. __________________ When our own government declares itself as "tyrannical", where does that leave us??!! "Januarary 6th insurrection". Funny, I didn't see a single piece of rope...

October 20, 2018, 01:11 PM	#7
dvdcrr Senior Member Join Date: July 5, 2010 Posts: 665	dang! __________________ "All warfare is based on deception. Hence when we are able to attack we must seem unable....when using our forces we must appear inactive. When we are near we must make the enemy believe we are far away."Sun Tzu The Art of War.

October 20, 2018, 04:54 PM	#9
bacardisteve Senior Member Join Date: September 5, 2006 Location: West virginia Posts: 653	22-250 is a steel killer as well. It's the velocity that does it. __________________ Kill em all and let God sort em out! USAF

October 20, 2018, 04:55 PM	#10
Scorch Senior Member Join Date: February 13, 2006 Location: Washington state Posts: 15,248	I've done similar with a 22-250 with 50 gr at 3,900 fps. Looked like someone took a dull drill to 1/2" boiler plate. Bullet energy and small frontal surface area will do that. __________________ Never try to educate someone who resists knowledge at all costs. But what do I know? Summit Arms Services

October 20, 2018, 08:19 AM	#2
Three44s Senior Member Join Date: December 15, 2008 Posts: 108	Hmm, I oughta try dat with my 257 STW! Maybe it will be the military’s mini tank killer? Perhaps the Norma bullet has some real juice there? Best regards Three44s

October 20, 2018, 08:44 AM	#3
reynolds357 Senior Member Join Date: December 10, 2012 Posts: 6,165	I am thinking either the bullet or the velocity is key. 100gr Scirrocco II bullets splatter like 22lr on the same plate. The Norma expands well. I have shot several deer with it and have always had quarter sized exit wounds.

October 20, 2018, 09:45 AM	#4
zeke Senior Member Join Date: November 17, 1999 Location: NW Wi Posts: 1,671	Velocity,smaller dia and bullet construction. Although very surprised it would go through AR 500 steel at 500 yards. Shot some plate years ago with 257 wby Barnes bullets at 100 yds, it was like copper inserts in the plate.

October 20, 2018, 09:59 AM	#5
LineStretcher Senior Member Join Date: June 14, 2018 Posts: 619	3000 ft lbs of energy will do that..LOL

October 20, 2018, 07:46 PM	#11
reynolds357 Senior Member Join Date: December 10, 2012 Posts: 6,165	Yeah, velocity penetrates, but still hard to believe it's clean punching something a 300 gr 338 Lapua is barely denting.

October 21, 2018, 07:12 AM	#12
Mobuck Junior member Join Date: February 2, 2010 Posts: 6,846	Those soft varmint bullets punch through cold rolled plate like a shaped charge AP projo. I've seen several instances of a .224 HP bullet punching a clean .30 cal hole through 3/8" plate @ 100 yards and the plate hardly moves from the impact.