I have been having a hard time with reloading my 7mm Rem with the Accubond 140gr, every powder seems to be the wrong one, I even went to the Nosler site with no help, I have tried H4350, RL-19, H1000, IMR????, does anyone have any hints, to help. I have spent alot of time on AccuBond and I'm not sure if I should switch bullets or if I'm missing something.

IMR 7828 was the original powder for the 7mm Mag, and is a top peerformer as are R22 and H4831.

Give Re-22 a whirl. Also, in my guns, the ABs seem to like being farther off the lands than other bullets.

It seems your rifle is telling you something, so you might try another bullet before you test a bunch of other measures to make the Accubond work well. I'd try a different weight, but if you are determined to shoot a 140, there are a bunch to choose from: TSX, A-Frame, Partition, Ballistic Tip, etc.

Are the groups with the different powders consistent or are some better than others? Duckboat is right; maybe your rifle is telling you something---like it doesn't care for Accubonds or 140 grain bullets. Which one is it? Who knows.

If one powder's group is markedly better, then you might have hope. If they're all way away from acceptable then try either a different bullet weight or a differnt bullet. Sometimes, it just ain't going to happen.

I have an ABolt in .243 that simply does not shoot 55 gr bullets. Only once have I gotten better than a 2" group and most are 2.5"+ But it is great with 70 and 100 grainers. Why, I don't know, but I ain't fighting it.

LWD

quote:

Originally posted by Sioux:
I have been having a hard time with reloading my 7mm Rem with the Accubond 140gr, every powder seems to be the wrong one, I even went to the Nosler site with no help, I have tried H4350, RL-19, H1000, IMR????, does anyone have any hints, to help. I have spent alot of time on AccuBond and I'm not sure if I should switch bullets or if I'm missing something.

1) Has the rifle been a proven shooter with any other bullet?

2) How is brass prep? brand? primer? consistent seating depth? runout?

3) EXACTLY what have you done to test all the previous powders with the ab bullet?

For example, did you do pressure test loads to find out maximum with each one first, then start loading test rounds in groups of 3?

If I recall, Barnes showed that Retumbo happened to be the best powder for their 140 bullet, so perhaps try it to.

My first recommendation is to try Re22 and/or VV N160 or N560, or Ramshot Magnum ball powder.

Unless we know exactly what you've done to test this bullet with the powders you mentioned, it is difficult to help. Then again, your rifle may just not like the 140 bullet.

I know a guy who picks a bullet, then 4-5 powders, looks at the max charge with all, and loads up 3 of each at the max (no he doesn't work up), and tests them. Whichever one shoots best at maximum is the one he works with.....beginning with seating depth, then primer changes if necessary.

Simply, H-4831.

An additional thought; have you tried the 140 Ballistic Tips for load development? They might show you that your box of Accubonds is the problem! My experience is that the Accubonds shoot better than the ballistic tips.

sound of a grenade rolling....personally, I'd shitcan both the Accubombs and the Ballistic tips in favor of an Aframe, TSX, TBBC, etc. Unless you're just hunting whitetails then bullet selection is mostly irrelevant...jorge

My 7MM RM likes both Accubonds and Ballistic Tips. If your rifle isn't shooting well check it for loose screws and bedding problems first, worry about the bullet last. If you want to fool with finicky bullets that cost a lot go with jorge's selections.

My Win. Mod 70 shoots them real tight with 65.3grs of IMR4350 out of a 26" tube.

My ruger likes 69 grs of IMR7828 with the 140 accbonds and BT,
With the 140 bergers it likes 69.9 grs of retumbo.

Hey Sioux, First off, Welcome Aboard! Darn nice Deer in your avitar.

I'd agree with the folks who said to try a different "weight" bullet. Just because we want to use a specific Bullet, doesn't necessarily mean the Rifle will shoot it well.

You might put those same Bullets in a different 7mmRemMag and have them shoot tiny groups. You just never know what a rifle will shoot well until you actually try it. And it can at times be frustrating.

I typically use Nosler B-Tips or Sierra MatchKings to Benchmark a rifle before I begin working with the Bullet I want to Hunt with. Gives me a bit of knowledge about where I "might" find Pressure Indicators as well as seeing if it will shoot at all. But, I do have to change "weights" occasionally.

I used to burn a lot of H870 when it was available, but it was very dirty with Light Bullets. Tried a lot of others and settled on the H1000 you had mentioned. Have used a bunch of it in a couple of 7mmRemMags and it has provided some fine accuracy.

Good Hunting and clean 1-shot Kills.

Accubonds and MagPro powder seem to work well together, at least in my experience. As others have mentioned, work up your loads with Ballistic tips, then try the same load with an Accubond.

Personally, I've found Accubonds to be the most consistently accurate bullets that I've ever loaded.

My best 7RM groups with 140 Accubonds come with RL 22 but I have also found H4831 to be excellent.I love Retumbo in the heavy weights 160-175. Lots of experience here but more info is needed for us to really help.

I have always had good luck seating the bullets from .005-.010 from the lands with any Nosler BT & AB. If you can't acheive the desired accuracy from that & using propellents that normally work well in that cartridge. I would think that for some reason the rifle does not care for that bullet. You could try a different weight & that might do the trick. All of this only applies if the rifle has already proven that it is capable of the accuracy you are looking for in the first place.
That being said, there are a lot of knowledgable people here that can help you figure this out.

Hey Jorge,
Just how many accubonds have blown up on game that YOU were shooting.

Sioux,
I had a 7 that I could not get a 140 or even a 150 to tighten up very good. Went to 160's and it is workable...

I think I was using IMR7828.