Equipment & Gear > Guns and Ammo
how to tell if a load / bullet has potential?
jasnt:
I’ve read those ab’s can be finicky. Try that seating depth test mentioned above before you give up but to me it sounds like the rifle dosent like em.
wooltie:
--- Quote from: jasnt on January 18, 2019, 03:52:17 AM ---I’ve read those ab’s can be finicky. Try that seating depth test mentioned above before you give up but to me it sounds like the rifle dosent like em.
--- End quote ---
I did at one point last year after I was not seeing the ABs group. I read that ABs can like a lot of jump, so I thought jump might be the culprit. But the seating test did not provide any groups. I just basically concluded that the rifle doesn't like ABs because I've seen other bullets and loads group well (using same loading process, me, shooting from bench, etc.)
But I'll note what you said about a given bullet tending to group well regardless of charge if the gun likes it. That's kinda the starting point I'm looking for. I use proven powders (imr 4064/4350, H4350), full length resize brass, clean primer pockets, tumble brass, measure, trim, chamfer and deburr cases, seat off the ogive. I think the only thing I don't do is mess with neck tension or adjusting the case shoulder.
It is kind of like pick which assumption you'll use as a starting point.
theleo:
--- Quote from: wooltie on January 18, 2019, 06:29:13 AM ---
I did at one point last year after I was not seeing the ABs group. I read that ABs can like a lot of jump, so I thought jump might be the culprit. But the seating test did not provide any groups. I just basically concluded that the rifle doesn't like ABs because I've seen other bullets and loads group well (using same loading process, me, shooting from bench, etc.)
But I'll note what you said about a given bullet tending to group well regardless of charge if the gun likes it. That's kinda the starting point I'm looking for. I use proven powders (imr 4064/4350, H4350), full length resize brass, clean primer pockets, tumble brass, measure, trim, chamfer and deburr cases, seat off the ogive. I think the only thing I don't do is mess with neck tension or adjusting the case shoulder.
It is kind of like pick which assumption you'll use as a starting point.
--- End quote ---
Is all your brass the same brand? If not you can be fighting an uphill battle.
If you're looking for AB type performance you could try Interbbonds and Sciroccos as well.
wooltie:
--- Quote from: theleo on January 18, 2019, 07:41:35 AM ---
--- Quote from: wooltie on January 18, 2019, 06:29:13 AM ---
I did at one point last year after I was not seeing the ABs group. I read that ABs can like a lot of jump, so I thought jump might be the culprit. But the seating test did not provide any groups. I just basically concluded that the rifle doesn't like ABs because I've seen other bullets and loads group well (using same loading process, me, shooting from bench, etc.)
But I'll note what you said about a given bullet tending to group well regardless of charge if the gun likes it. That's kinda the starting point I'm looking for. I use proven powders (imr 4064/4350, H4350), full length resize brass, clean primer pockets, tumble brass, measure, trim, chamfer and deburr cases, seat off the ogive. I think the only thing I don't do is mess with neck tension or adjusting the case shoulder.
It is kind of like pick which assumption you'll use as a starting point.
--- End quote ---
Is all your brass the same brand? If not you can be fighting an uphill battle.
If you're looking for AB type performance you could try Interbbonds and Sciroccos as well.
--- End quote ---
Yes, I use winny brass and CCI primers. Wanted to use the ABs because I am looking for a bullet that would gimme a pass through on bears out to 300 yards if I had to shoot that far. Going to try 165g partitions next. Hadn't thought about interbonds, however.
Thought about using barnes, but they are expensive to practice with and I'd rather not mix barnes and non-barnes for practice in the barrel.
jasnt:
When I’m starting load development I’ll start with a low charge. Load up some 3 shot groups starting at .015” off the landes or mag length which ever is shorter and seat each group deeper by .030”.
Which ever shot best I’ll use that seating depth for my load work. I shoot a ladder over my chrono ( I use magneto speed, must have an accurate chrono for this!) target dosent matter. Look for my upper flat spot near max. Then I’ll load up 5 shot groups and fine tune my seating depth in .005” increments.
If you don’t have a magneto speed or labradar then you could do 3 shot ladder test at 300 yards.
This is my method that’s worked well for me. Yrmv
Have you looked at hammer bullets?
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