Measuring fps

[JoshT]

Dude... never shoot the donor... you know that. 

My 6mm also has a factory Remmy tube with over 3000 rounds through it... and most of those were 55's doing well over 4k... still going strong, funny how mileage can vary.

[Antlershed]

In short, yes we were dumb and ordered turrets because we thought the bullets would shoot. We were wrong so now we are trying to work up a load to salvage the use of the turrets. We will be sure to test it all the way out and if the load isn't accurate or if the turrets don't work with it we will scrap the turrets and eat the money we spent on them. We are both shooting RUM's and 180 Accubonds. We are getting pretty close to 3250 with about 96 I grains of powder.

[JoshT]

There's a bunch of different bullets that should work with that turret. 180 Swift Scirrocos, 180 Ballistic Tips, 180 Sierra SBTs, 190 Bergers, etc. I can't imagine the 180 Accubond not shooting well enough for you. Like I told both you guys... my Sendero 300 RUM only shoots MOA at 100... but it will hold MOA (and often better) for a loooong ways, and 8" groups at 800 yards will still hammer a coyote.

How "inaccurate" are your 180 loads?
What powders are you guys shooting?
Have you fooled around with the OAL?
Have you tried Moly (I know Jamie is a fan of the Moly coated 200 Accubonds in his RUM)?

[Jamieb]

I'm not running moly in the RUM. One of the few rifles that still shoots naked bullets. I tried 180gr. partitions when I first got my RUM, they wouldnt shoot for crap. As Josh touched on, your 100 yard groups my not be showing the true potential of the load. My 300 RUM with 200 gr. accubonds is shooting 1 moa at 100 yards but consistently shoots 1/2 moa at 500 yards. The last time I was up in the hills shooting, the weather was perfect in the morning. I shot some unbelievable groups.

[Antlershed]

Sorry, I should have stated that the 180 Accubonds are shooting great groups at 100 (holes touching). We are just trying to dial the speed in as close to 3250 as we can now.

[JoshT]

I did some calculations for you guys with my ballistics program... and there's about 15 bullets that will work within half-minute of your turrets. In fact, if you shoot the 200 Accubond at 3100 (which is pretty easy) and sight your rifle in 1/2" higher than you would have with the 180... then the turret will be pretty much dead on all the way to 1000 yards (which is as far as my program goes).

[Antlershed]

Thanks for the info Josh. My turret goes out to 1k and Jeremiah's goes out to 1200 (mine was supposed to).