Anybody shooting the hornady 75's in a 1-9? They make nice round holes at 200 just not very close together! I have tried a few different loads of H 4895 with not much success. Have a few loaded with Varget to try tomorrow so we will see. Am I wasting my time?
75 hpbt in a 1-9 twist
- Thread starter gshipps
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ironworkerwill
Member
I wouldn't use them. Check out jbmballistics.com. Green is stable yellow is moderate stability and red is unstable. Your results may vary.
ironworkerwill
Member
Just checked, 1" projectile @ 3000 fps is moderate. It may be ok at 100yds but falls apart shortly afterward.
ArchAngelCD
Member.
OK... Which cartridge are you loading? (I can guess the .223 but it's a guess)
In the .223 I use Varget for my bolt action rifle and mostly H335 for the ammo meant for a semi-auto.
ironworkerwill
Member
Yes, I assumed .223 also.
ArchAngelCD
Member.
Why are you assuming it's the twist rate causing "not much success"? What is going wrong? If it's only poor accuracy many other factory can be causing that. Wrong powder, too much powder, not enough powder, wrong primer, wrong seating depth and so on. The twist rate will effect bullet stability. Is the bullet unstable? Are they key-holing? A 1/9 twist should be just fine with those 75gr bullets.
Inquiring minds want to know... lol
Inquiring minds want to know... lol
Hondo 60
Member
75 grain in a 1 in 9 is really pushing the upper limit.
A lighter bullet will probably give you better accuracy.
I'd recommend 50-70 grains.
Mine loves 55 or 62.
A lighter bullet will probably give you better accuracy.
I'd recommend 50-70 grains.
Mine loves 55 or 62.
ArchAngelCD
Member.
That all depends... The OP said he's using a 75gr Hornady bullet but he didn't say which 75gr Hornady bullet. Hornady has two 75gr bullets. The HPBT bullet they have isn't anywhere near as long as their A-Max bullet. The A-Max might be too long to stabilize but not the other. (or both will be fine)
I tried three different loads with that bullet in a 20" Rem 700 w/1:9 and it stabilized them but accuracy was never what it is with lighter bullets. Being it is a bolt gun I push them pretty hard to stabilize them as best as it can. 69gr is the upper limit for me but my particular gun likes the 53-60 best. Tried some Sierra 65gr SP's and it wasn't too fond of those either. If you want to shoot the heavy bullets a lot I suggest a 1:7 or 1:8 depending on how heavy you want to go. I think you'd have a pretty hard time over-stabilizing a 75+gr bullet with those rates.
Which ones am I using? Uh check title of thread. 75gr HPBT in 1-9 twist. So far in MY rifles they will stabilize but they are not very accurate. Tried several loads of H4895 and one load of varget so far. I may try some more or may just wait and get a little faster twist.
I tried some 75gr A-Max bullets in my Mossberg MVP with a 1:9 24" barrel. I only had 50 bullets and surplus WC844 powder, but I tried eight different loads in LC brass with CCI 400 primers. The best I could do with them was a 1.38" 5-shot group (.84" 4-shot) at 100 yards. The largest 5-shot group was 2.2".
The rifle does a lot better with bullets from 40-68gr.
As for the Hornady 75gr BTHPs...http://www.hornady.com/store/22-Cal-.224-75-gr-BTHP/
The rifle does a lot better with bullets from 40-68gr.
As for the Hornady 75gr BTHPs...http://www.hornady.com/store/22-Cal-.224-75-gr-BTHP/
rodregier
Member
The Hornady A-Max 75g projectiles are really too long for 1:9 twist barrels
The "plain" Hornady 75g HPBTM projectiles will work well in some (but not all) 1:9 barrels.
Max safe velocity is helpful, which means shorter barrels could be more problematic for stabilization.
The "plain" Hornady 75g HPBTM projectiles will work well in some (but not all) 1:9 barrels.
Max safe velocity is helpful, which means shorter barrels could be more problematic for stabilization.
rodregier
Member
n.b. The 75g A-MAX packaging (before being temporarily suspended by Hornady) was labeled as 1:8 twist.
rodregier
Member
The 68/69g will work up to 1:10 twist, so they are much more forgiving in that regard.
StandingTall
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Those 75 grain Hornady's didn't work very well for me, but the Berger 73 grain Match Target bullets work great in my 1/9 twist Savage BVSS.
Steve in PA
Member
I've shot Hornady's 75gr BTHP and Windener's 75gr milsurp BTHP (when they had them) out of my 1:9 Bushmaster and Savage 12FV rifles. Excellent results. I've used H335 and Varget loads.
Steve in PA
Member
My range is only 50-100 yards, so no pictures from 200 yards but I have no doubt they would group well at that range too.
This group is from my Savage 12FV @ 100 yards
Another grouping from the same rifle. Pretty much 3 rounds in the same hole.
This is Windener's 75gr BTHP fired from my Bushmaster using an Eotech at 50 yards.
This group is from my Savage 12FV @ 100 yards
Another grouping from the same rifle. Pretty much 3 rounds in the same hole.
This is Windener's 75gr BTHP fired from my Bushmaster using an Eotech at 50 yards.
I don't reload, but have shot Hornady's 75 gr. BTHP Match factory ammo in my Remington 700 SPS Tactical with a 20" barrel, and a 1:9 twist. I initially assumed they would group well, but saw some on sale and picked up a box. They group 0.5" MOA at 100 and 200 yards, with my best group (shooting prone on a bi-pod) being three shots grouped at 15/16" at 200 yards. I have also bought Black Hills 75 BTHP ammo since with the same Horady bullet, and it groups the same, so at least in my rifle, 75 BTHP bullets group just fine.
I've also picked up some 68 gr. BTHP Black Hills, and it shoots/groups the same as the 75 grain stuff. YMMV I guess.
I've also picked up some 68 gr. BTHP Black Hills, and it shoots/groups the same as the 75 grain stuff. YMMV I guess.
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