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    Reloading Dev and Muzzle Brakes

    Attaching a brake is the same concept as a tuner. It’s a weight on the muzzle. This will possibly change group size which requires seating depth testing/adjustments. As long as nothing is wrong with the brake, it will eventually tighten back up once you get the right seating depth. Powder...
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    Reseating at the range?

    Load them long. Get Wilson die and arbor press. Super easy. Pretty common too.
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    AMP Press now in stock!!

    Shooting more than one shot already fixed that…..
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    AMP Press now in stock!!

    Yea, it’s all about realistic expectations. I’m within .002 variance on trimmed cases with Henderson trimmer (verified via caliper). And I see up to .004 or so difference in the start point on the graph if I zoom in. I’m *assuming* that’s due to length of chamfer and bullet variation. I have...
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    Use the expander, or not?

    If you’re not using the expander ball and you have dented necks, then yes, you’ll need mandrel them first. If it’s a small dent, can get away with sizing and then mandrel. If it’s substantial, you’ll want to uniform the neck first.
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    Seating depth and pressure

    Seated deeper = less capacity = more pressure.However, it’s not usually substantial. Seating into the lands can be a substantial increase in pressure depending.
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    AMP Press now in stock!!

    It’ll handle anything you can get a chamber type die for. I’ll be using it on lapua bolt face cartridges.
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    AMP Press now in stock!!

    Initial spikes are *likely* due to chamfer aggressiveness (or lack of chamfer). Have to really visualize what’s going on with bullet and neck during the graph. Bullet has to overcome the initial resistance of the top of neck. After, as the bullet is progressing in the neck, it has less and...
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    Use the expander, or not?

    The expander ball will work. But you’ll get better results with the above mentioned process.
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    AMP Press now in stock!!

    Just loading out the box vs brass prep:
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    AMP Press now in stock!!

    If you have the right mindset, it’s a good tool. If you’re the type who will get paralyzed when something doesn’t “look” like you expected, just send AMP $1400 and tell them to keep the press. It’s cheaper. I’m seeing a lot of things that validate what I though prior. I’m also seeing things...
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    AMP Press now in stock!!

    So, just messing around, I did 10 each: Lapua 6br virgin - mandrel/chamfer Hornady 6gt virgin - mandrel/chamfer Hornady 6gt virgin - IDOD neck turned to .009 wall/sized down/mandrel/chamfer All three had a Peak Force ES of 10/11. The Hornady non turned was 49-60lbs. The turned Hornady and...
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    AMP Press now in stock!!

    Almost exactly what I’m doing.
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    AMP Press now in stock!!

    It’s quite possibly the worst mistake I’ve every made.
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    AMP Press now in stock!!

    This is why you buy lapua brass….
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    AMP Press now in stock!!

    This press is for masochists…… Definitely will show you how consistent or not things are. This is fired hornady 6gt, not cleaned, not annealed, not neck turned. This is “acceptable” IMO. But I’d like to see better.
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    AMP Press now in stock!!

    Regardless of what will show on paper, this is already an excellent example of how much more feedback this provides than say a hydro press. All 5 of the first rounds hade a very consistent Peak Force which is what most pay attention to. But as you can see, there was quite a bit of variation.
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    AMP Press now in stock!!

    Here’s interesting graph from ultimate reloader. Top 5 lines are virgin lapua 6.5 cm with expander ball run in them. Bottom 5 (stacked on each other) are same, but having been run through AMP annealer. Seems to *suggest* what lapua considers acceptable annealing isn’t as consistent as the AMP...
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    AMP Press now in stock!!

    I’m sure they designed it for long term use. I’ll be using mine for several hundred rounds a week on average. It has an auto mode. So you just slide the die in, the load cell senses it, then auto seats and makes a trace. Once I decide how I’ll be batching ammo (based on testing) my process...
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    Berger 105 vs 109 hybrid in 6BR

    Just noticed you said RDS……then no, ignore what I just said. I’m using 109 Berger. I can’t speak for an RDS.
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