155 Palma (#2156) or 175 smk for 1000 + yards (Read 2109 times)

Rhed

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #20 on: June 30, 2022, 10:46:38 AM »
Agreed.. I always thought, at 175 gr, it’s more the likes of a magnum round, PRC or Winmag. Guess that’s why in Sierra’s manual, one need to get the 175 at least 2800 for a higher BC. And a .308 ain’t gonna cut it. 175 gr for .308 to grand is doable as many done it . But limiting factor is speed if to go any further in a .308. I’ve done Hornady 168 hpbt out (twice out of 25 shots 😂) to a grand. But I was shooting it like rainbows. 😂 Wasn’t very consistent either Then again, it wasn’t my intent for these bullets. They shot superb at 800. My gas gun shoots 77 gr tmk out to 700 consistently, wtf. I’m gonna try these 155 Palma #2156. If I can get 2800 or better, I should be golden. I’ve read good reports on these bullets for a standard AI Bartlein pre-fit in 1/10. And if that’s not cutting it, then 6 or maybe 6.5.

drck1000

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #21 on: June 30, 2022, 12:47:31 PM »
I have a rifle specific built for the 155, with a 95 Palma chamber cut. The throat is shorter to optimally seat Sierra 155 Palma projectiles. As expected, the rifle shoot superbly with these bullets and I get very high velocities out of a 30” barrel. Around 2950 fps. (This is a very hot load, be careful if your chamber is not tight cut to allow, work up slowly looking for pressure)

I have no opportunity to shoot 1000 yards so I cannot speak to the effects. However, I have used to good effect at 600.

Nowadays modern projectiles have been coming out with super ballistic coefficients. I settled on 168 Berger Hybrid for my match projectile. Better increase in BC, yet still retains a ton of speed. If ever I can shoot 1k this would be the round I use.

Problem is .308 case is too small, if you go heavier than 168 you start losing the ballistic advantage of the more massive bullet because of the decrease in velocity.

If there is no requirement to use .308, 6.5 Creedmore and other variations, have much better external ballistics for long range shooting.

IMO
I've been shooting the Berger 168 hybrids as well.  About to start the load development on my new(ish) .308 with them shortly. 

I agree 100)% with the last statement, which is why I also have a new(ish) 6.5 creedmore and actually another one waiting for me at the FFL. . .  :o  Singular focus on shooting steel at 600-1000ish yards.  Though second 6.5 was mostly because I found a great deal on an Impact Precision action, so I HAD to get one.  ;D

drck1000

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #22 on: June 30, 2022, 12:51:24 PM »
Agreed.. I always thought, at 175 gr, it’s more the likes of a magnum round, PRC or Winmag. Guess that’s why in Sierra’s manual, one need to get the 175 at least 2800 for a higher BC. And a .308 ain’t gonna cut it. 175 gr for .308 to grand is doable as many done it . But limiting factor is speed if to go any further in a .308. I’ve done Hornady 168 hpbt out (twice out of 25 shots 😂) to a grand. But I was shooting it like rainbows. 😂 Wasn’t very consistent either Then again, it wasn’t my intent for these bullets. They shot superb at 800. My gas gun shoots 77 gr tmk out to 700 consistently, wtf. I’m gonna try these 155 Palma #2156. If I can get 2800 or better, I should be golden. I’ve read good reports on these bullets for a standard AI Bartlein pre-fit in 1/10. And if that’s not cutting it, then 6 or maybe 6.5.
You, Heavies, and I need to meet up and the range, shoot and chat.  We are all on a very similar path, just different stages and slightly different ways to get to the end goal.  With very similar conclusions along the way.

Just checked my notes again and with 8208,I was getting 2740 fps at 42.5 gr.  I would suspect (haven't tested yet) that when I do the ladder test with 8208, I'll likely be able to get to at least 2800 fps in the 42.9 gr range.  Haven't decide the range for ladder test yet, but I'm thinking 43.4ish at least. 

ren

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #23 on: June 30, 2022, 01:03:48 PM »
a Palma rifle has a long barrel with a slow twist
Deeds Not Words

Rhed

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #24 on: June 30, 2022, 02:24:18 PM »
a Palma rifle has a long barrel with a slow twist
Yes.. Palma shooters 30” 1-14.
Let’s just see what it does in 26” 1-10
I mean those snapshots I took from Sierra’s reloading app is from a 24” 1-10 twist for the 155 Palma.So might have chance.

Heavies

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #25 on: June 30, 2022, 05:05:29 PM »
a Palma rifle has a long barrel with a slow twist

I forget, but I think mine is a 12 twist.

Heavies

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #26 on: June 30, 2022, 05:08:44 PM »
I've been shooting the Berger 168 hybrids as well.  About to start the load development on my new(ish) .308 with them shortly. 

I agree 100)% with the last statement, which is why I also have a new(ish) 6.5 creedmore and actually another one waiting for me at the FFL. . .  :o  Singular focus on shooting steel at 600-1000ish yards.  Though second 6.5 was mostly because I found a great deal on an Impact Precision action, so I HAD to get one.  ;D

These hybrids are awesome and taking advantage of the higher BC and mass is easier because the shorter bearing surface and longer nose allows these pills to be pushed faster with less pressure. And they shoot very accurate.

Don’t try the same loads with 168 SMKs. Lol. You’ll blow primers or worse. Don’t ask how I know.  :rofl:

Rhed

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #27 on: June 30, 2022, 05:27:55 PM »
Heavies, drck1000.. what kind of MV’s where you getting with the hybrid? I might pick up a box of 100 from pv to try it out too.

drck1000

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #28 on: July 04, 2022, 03:14:32 PM »
Heavies, drck1000.. what kind of MV’s where you getting with the hybrid? I might pick up a box of 100 from pv to try it out too.
I haven't shot the Berger 168 gr hybrids in my new rifle (26" Bartlein 1:10 M24 contour).  See data below from my old Rem 700, 20" SPS Tactical.

Range of powder charge and velocities
Varget
40.5 - 2364
42.0 - 2477
42.5 - Missed data, but shot fine.
8208
39.5 - 2465 fps
41.5 - 2590 fps

Heavies

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #29 on: July 04, 2022, 03:38:48 PM »
Heavies, drck1000.. what kind of MV’s where you getting with the hybrid? I might pick up a box of 100 from pv to try it out too.
Good question. I haven’t shot them for years now, can’t find my data book. Very embarrassing. Sorry. It was a pretty warm load.

Used small rifle primer magnums in .308 Palma cases with the flash hole reamed out to a normal diameter, 8308 XBR

Rhed

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #30 on: July 04, 2022, 05:25:01 PM »
Good question. I haven’t shot them for years now, can’t find my data book. Very embarrassing. Sorry. It was a pretty warm load.

Used small rifle primer magnums in .308 Palma cases with the flash hole reamed out to a normal diameter, 8308 XBR
I just picked up 100 pieces of Perterson srp.308 at WGS yesterday since 808Hunta said they had. Sh!t! Should’ve just grabbed the last 50 pieces too. They get one more box left if anyone interested. Cause .308 Palma brass is sold out everywhere. This the first time I’m gonna work with these brass. Friggin nice! Neck wall thickness .014 all consistent vs Lapua .015. Had to order one .334 tn bushing for .002 grip. I only get .335-.336.

drck1000

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #31 on: July 05, 2022, 09:25:18 AM »
I just picked up 100 pieces of Perterson srp.308 at WGS yesterday since 808Hunta said they had. Sh!t! Should’ve just grabbed the last 50 pieces too. They get one more box left if anyone interested. Cause .308 Palma brass is sold out everywhere. This the first time I’m gonna work with these brass. Friggin nice! Neck wall thickness .014 all consistent vs Lapua .015. Had to order one .334 tn bushing for .002 grip. I only get .335-.336.
Shoot, I have a bunch of Redding bushings that I'm not going to use since transitioning away from Redding sizing dies for 6.5 and .308.  If you didn't order the .334 or may need others, lmk and I'll check what I have.  I have a couple of bushings from Short Action Customs that are meant for Redding dies (and supposed to fit most bushing dies).  I'll have to check what size, but lmk if you want to try them. 

Have you looked into ADG for brass?  I've heard really good things about them as an alternative to Lapua.  They seem quite pricey though. 

808Hunta

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #32 on: July 05, 2022, 08:54:30 PM »
Have you looked into ADG for brass?  I've heard really good things about them as an alternative to Lapua.  They seem quite pricey though.

I use several different offerings of ADG Brass. It's good brass, but I'm pretty sure they don't make 308 SRP though.

drck1000

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #33 on: July 05, 2022, 10:47:28 PM »
I use several different offerings of ADG Brass. It's good brass, but I'm pretty sure they don't make 308 SRP though.
Ahh, I was thinking of Alpha Munitions. Did a quick search and Alpha Munitions does make .308 Win with SRP, but didn’t see anything in stock.

I was lucky to get both .308 and 6.5 cm LRP Lapua brass a while back. Seems like they are also quite often out of stock though. Seems like a lot of popular cartridges are tough to find brass.  :(

Rhed

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #34 on: July 06, 2022, 12:07:29 AM »
I put notifications on 6.5 srp and .308 srp brass in Lapua or Peterson at brownells. They pretty good with notifying when it becomes in stock. I get several bullets to in notifications tmk’s mostly. But that stuff been out for a long while too. I like try the 168 gr in tmk.

808Hunta

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #35 on: July 06, 2022, 10:55:48 AM »
Ahh, I was thinking of Alpha Munitions. Did a quick search and Alpha Munitions does make .308 Win with SRP, but didn’t see anything in stock.

I was lucky to get both .308 and 6.5 cm LRP Lapua brass a while back. Seems like they are also quite often out of stock though. Seems like a lot of popular cartridges are tough to find brass.  :(

Yeah Alpha does my bradda their OCD Brass is great stuff

drck1000

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #36 on: July 07, 2022, 08:26:30 AM »
I put notifications on 6.5 srp and .308 srp brass in Lapua or Peterson at brownells. They pretty good with notifying when it becomes in stock. I get several bullets to in notifications tmk’s mostly. But that stuff been out for a long while too. I like try the 168 gr in tmk.
I shop/check often at Mile High, Bullet Central, and Whidden.  Maybe a couple of others.  I think I'm on the notification list with them for some Berger bullets.

808Hunta

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #37 on: July 07, 2022, 09:47:30 AM »
I shop/check often at Mile High, Bullet Central, and Whidden.  Maybe a couple of others.  I think I'm on the notification list with them for some Berger bullets.

What bergers you looking for my bradda? Lmk if I don't have them I'll look out for them as well

drck1000

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #38 on: July 07, 2022, 10:31:19 AM »
What bergers you looking for my bradda? Lmk if I don't have them I'll look out for them as well
Berger 140 gr 6.5mm Hybrid Target (#26414)

If you find in stock, yeah, let me know.  I have a bunch of Hornady 140 gr and 147 gr ELD-Ms and 140 gr SMK, so I have plenty to "keep me busy".  But really want to try the Bergers in 6.5.  Grass always looks greener on the other side.  ;D

Luckily, I have a bunch of Berger 168 gr Hybrids in .308, so that scratches some of the Berger itch. 

808Hunta

Re: 155 Palma (#2156) or 175 smk for 1000 + yards
« Reply #39 on: July 08, 2022, 03:26:31 AM »
Shux I sent my last 500 to a bradda big island not too long ago. I'll keep a look out n have a few friends on the mainland looking as well. Glad you get some bullets to keep you busy in the mean time  :D