Recent content by Rardoin

  1. R

    7 mm SHERMAN SHORTMAG vs 7 SAUM

    If you can find some N165, give it a go. It is very kind on the freebore and I was able to push 190's up to 2860 fps before getting stiff bolt lift. It should push a 180gr in the mid/upper 2800's without taxing the brass.
  2. R

    7 mm SHERMAN SHORTMAG vs 7 SAUM

    ^^^ particularly on these short mag ‘fat’ bodied cartridges. If your brass is a bit short of the chamber’s shoulder and the load is not light on the first hit the brass can slam back against the bolt face producing ejector marks. The brass will also ‘swell’ at the base above the web and produce...
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    7 mm SHERMAN SHORTMAG vs 7 SAUM

    I’m on my 5th 7 SS barrel (four 8.25tw Bartlein and one 8tw Schneider) shooting 190 A-tips mostly, some 190 and 184 hybrids. The ADG brass is very tough but if you hit it hard on the first firing and expand the body at the .200” line, just above the web, your sizing die may not be able bring...
  4. R

    Proven load now resulting in clickers?

    Yes, and possibly. Yes on your first idea; the existing die will be able to bring the brass down to a dimension that will provide adequate clearance for extraction after firing. However, if the existing die sizes the brass back enough to permit chambering with slight clearance in the problem...
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    Proven load now resulting in clickers?

    It is the feeling/sound made when a case that has the body area just ahead of the web expand at firing and become very tight in the chamber. Upon extraction the bolt is raised until it starts on the extraction cam where is gets difficult to raise the handle more. When enough lift force is...
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    Load recommendation for 1000 yards

    At or above 2550fps should keep you at 1250fps at target (1000yds) and should trigger an acoustic target sensor array. N150 has worked well with 200-20X in a friends F-TR gun....won the 2018 LR Nationals with it.;)
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    Load recommendation for 1000 yards

    Terrible? Nonsense. Less than ideal I'll buy for certain..... particularly if the twist rate is not enough to stabilize a longer high BC bullet. However, being the OP is from Spain, he may not have a lot of options on available calibers/chamberings as we do here in the states.
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    ADG brass shorter then recommended length

    If you are trimming the necks close enough to true chamber length to prevent a carbon buildup (and that would be the only way to prevent it) you would have a greater risk of the neck impinging on the end of the chamber and causing a pressure spike. A regularly and properly cleaned chamber will...
  9. R

    ADG brass shorter then recommended length

    Yes, you will be fine with your suggested process. However, you may want to trim all to the same length after the second firing/resize cycle to get a very slightly longer neck if that is important to you. However, 10-20 thou' shorter than SAAMI recommended trim length will pose no issues with...
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    Barrel Tuners- Muzzle Breaks- Barrel Harmonics Management

    @ka30270 You would perform load development pretending the tuner was not present. Once you have suitable load that has proven out on multiple occasions then you test different tuner positions under different conditions over multiple sessions to see how it affects the grouping. Then, when you...
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    Barrel Tuners- Muzzle Breaks- Barrel Harmonics Management

    I don't think tuners are about dampening vibrations as much as they are about changing the location of the nodes so the muzzle is at the center of a vibrational node...ie- not moving when the bullet exits. The particle dampening tuners I have don't seem to work any different than the solid mass...
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    Copper removal from used gun

    @Rflshootr I shoot mainly competition mid/long range these days and run a lot of rounds down the bore so I clean very often. I always dry patch out any oils from the bore before shooting. My barrels in my most used comp rifle (7 Sherman Short) with a 190 get over 1800rds of top level match...
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    Barrel Tuners- Muzzle Breaks- Barrel Harmonics Management

    You could with a 22lb F-open rifle/2.0 oz Jewell trigger on a SEB Neo joystick front rest and 18lb rear bag. Absolutely.
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    Barrel Tuners- Muzzle Breaks- Barrel Harmonics Management

    This was not a .308; the target system was set to .308 cal.. I was shooting a 7 Sherman Short mag/190 A-tip at 2740fps mv. The velocities shown are terminal velocity as calculated by the target hub...which are spotty at times but was really close to predicted Vt. I don't have and would not use...
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