I am a believer in the terminal performance or nosler partitions but i have a few rifles that dont like them, i have one 270 that shoots then well with imr 4350 and my brother has a rifle that likes the same load. I have another 270, a 7 rem mag, and a 308 that just dont seem to like them. I tried a bit with seating deapth, and small adjustments to charge but never really started from scratch or put to much effort in to it, just kind of wrote it off as the guns prefrence. I am thinking i may revisit this and try a little harder. Anyone have a pattern they have seen as far as prefering a faster or slower powder or seating deapth?
Partition accuracy. Any suggestions?
- Thread starter john 800
- Start date
What are the barrel lengths on those three 270s, just curious.
The two that like them are 22 in long rem 7600 pumps the one that does not is a 24 mod 700
That’s interesting because there’s a theory about the length of the barrel playing a key role and different length barrels might need different loads. The guy is Chris Long and he calls it Optimum Barrel Time. Web site called Techshooters. I don’t know if it’s right or not, but it’s interesting that the two rifles that like the load are the same length.
Interesting indeed. A little more background incase it helps shed light on anything. The two that shoot partitions are same model of rifle manfactred about three years apart, the deapth of the throats are almost the same. Very deep, the other one (700) is deeper amd does not shoot anything i have tried well without it close to the lands. The two 7600s will shoot fine with a long jump. The load is a near max charge of imr 4350, amd they will shoot most bullets fair with that load. The 700 doesnt like 4350 with any bullet so far, however if i load a 150 balistic tip close to the lands with imr 4831 it shoots decent so i know the rifle is not a dud, just picky. I was wondering if it is some chamber dimensions or leade that are causing it, and have been considering rebarreling it or doing a barrel setback because of it.
TheOtherZilla
Pull my finger
I have been shooting 130 Nosler Partitions in my 270's with IMR4350 since Hector was a pup.. This year I used Barnes 130 TTSX bullets .. Great accuracy.. Can't comment on performance on big game, I didn't shoot anything this year..
If the 150 Partition is the bullet I wanted to shoot, I'd try: H4350, H4831SC, RL-17, and RL-23. Maybe even RL-26. I would start the bullets .020" off the lands and go deeper after I found a powder that was promising.
Dusty Stevens
Shiner
A 4831 variety is what it wants.
curious how much worse they shoot with partitions than with other bullets? Partitions are not known for benchrest accuracy but they usually do as good as any other hunting bullet
curious how much worse they shoot with partitions than with other bullets? Partitions are not known for benchrest accuracy but they usually do as good as any other hunting bullet
I have never been able to get NP's to shoot great, but their lethality is awesome and so long as i dont have to shoot them very far i will put down any animal with them that i shoot at.
So inside 100 yards they are a good bullet in my book for game such as Red deer stags whether it be from a 150 grain .270 dia projectile or a 125 grain .260.
So inside 100 yards they are a good bullet in my book for game such as Red deer stags whether it be from a 150 grain .270 dia projectile or a 125 grain .260.
jackson1
Silver $$ Contributor
Have several partial boxes of Nosler Partition bullets on my shelf. Back in the 70's they were the gun writers bullet of choice, so I had to have them. Tried them in 6mm, 270, and 7mm, never got them to shoot as accurately as I was hoping. There is an old school hunting bullet I really like, the Speer Gran Slam. Got enough of them to keep myself and my sons going for the rest of our lives, for hunting purposes. I check my sights yearly and hunt them, the days of shooting them for fun are gone, due to to my shoulder. My belief is; the Partition would work great on a 100 yard whitetail, but I would be concerned about a 400 yard mule deer. For strictly hunting rifle purposes; find a bullet you like and stick with it.
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I've found that about half the rifles I've tried Partitions in don't shoot them real well, but accuracy is sufficient for hunting. Other rifles do well with Partitions. I've gotten away from Partitions altogether and have been using Barnes TSX or TTSX for hunting. My experience has been that these bullets are much easier to get good accuracy with in almost every rifle and the terminal performance has always been good, comparable to Partitions.
Accuracy is a relative term. Accurate to the fellow that drags his Thuddy-Thuddy out of the closet once a year and can hit a paper plate at 50 yards now that it accurate to him. But to most rifle cranks it has to be sub moa before we start tinkering with it to try to improve it's accuracy. In my experience the Partition is a feast or foe. It either will shoot great or not at all no matter what you do. If you can't get the Partition to shoot give the Accubond a try. Let me say they like a jump a good ways in my experience. The Accubond is a mix of the Partition performance and the Ballistic Tip's flight and accuracy. Some thing that the Accubond has not expanded on the game they have shot with it. This is because it is a bonded bullet and holds together and expands with the petals of jacket folding back against the shank of the base of the bullet and only leaves an exit hole about twice the diameter of the original bullet. But when you look on the inside you see that it had to expand because it has destroyed the vitals. Actually I have had the Partition exhibit the same smaller twice or less the bullet diameter exit hole. Usually the Partition blows the nose half off in expansion and fragmentation and the petals fold back against the shank and plow through like a FMJ.
I've experimented with the 165 Partitions in the 308 using IMR 4064 and 4895. The best bench groups I could manage was about 1 1/4 to 1 1/2 at 100 yards compared to 150 Sierra Pro Hunter bullet, the latter grouping 1/2 to 3/4.
My main purpose in trying the Partitions was to prepare for a black bear hunt in North Central PA. These bullets are known for their penetration / expansion on heavy tough game animals. The area I was hunting was dense cover and very steep and difficult terrain. Shot opportunities were rarely over 100 yards therefore terminal performance was more of an issue than the level of accuracy. At that distance, the Partitions in my rifle were perfectly adequate accuracy wise.
Unfortunately I did not get any shot opportunities at a bear. My hunting partner who has shot 3 bears in PA shoots a 308 and uses 180 grain Rem factory ammo.
Bottom Line: The Partitions are designed for heavy tough game animals and certainly have their place. Usually the shot opportunities are not extreme therefore bench rest level accuracy is not needed. For thin skinned game animals such as deer, Sierra Pro Hunter and Nosler BT's are more than adequate in my experience. At least in my rifle, these shot considerable more accurate but then again that level of accuracy is nice to have but not necessary in the areas where I hunt deer since shot opportunities are rarely over 200 yards.
My main purpose in trying the Partitions was to prepare for a black bear hunt in North Central PA. These bullets are known for their penetration / expansion on heavy tough game animals. The area I was hunting was dense cover and very steep and difficult terrain. Shot opportunities were rarely over 100 yards therefore terminal performance was more of an issue than the level of accuracy. At that distance, the Partitions in my rifle were perfectly adequate accuracy wise.
Unfortunately I did not get any shot opportunities at a bear. My hunting partner who has shot 3 bears in PA shoots a 308 and uses 180 grain Rem factory ammo.
Bottom Line: The Partitions are designed for heavy tough game animals and certainly have their place. Usually the shot opportunities are not extreme therefore bench rest level accuracy is not needed. For thin skinned game animals such as deer, Sierra Pro Hunter and Nosler BT's are more than adequate in my experience. At least in my rifle, these shot considerable more accurate but then again that level of accuracy is nice to have but not necessary in the areas where I hunt deer since shot opportunities are rarely over 200 yards.
AckleymanII
Gold $$ Contributor
270 Win
~60g of H4831
130g Partition
Bullet seated to within .005 of the lands
3/4" accuracy in the Rem's I have shot them in that are bedded, bbl floated, trigger tweeked
~60g of H4831
130g Partition
Bullet seated to within .005 of the lands
3/4" accuracy in the Rem's I have shot them in that are bedded, bbl floated, trigger tweeked
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