Hunting Washington Forum

Equipment & Gear => Guns and Ammo => Topic started by: longrangekiller on September 05, 2013, 02:20:24 PM

Title: 300 rum
Post by: longrangekiller on September 05, 2013, 02:20:24 PM: I'm shooting a 300 rum with a 200 gr nosler accubond with 94gr of retumbo anyone else? I'm just curious of your fps my crony is averaging 3400 fps that just don't seem right to me
Title: Re: 300 rum
Post by: BULLBLASTER on September 05, 2013, 02:36:13 PM: Quote from: longrangekiller on September 05, 2013, 02:20:24 PM
I'm shooting a 300 rum with a 200 gr nosler accubond with 94gr of retumbo anyone else? I'm just curious of your fps my crony is averaging 3400 fps that just don't seem right to me
I couldn't get the 200 accubonds to shoot right in my rum. But didn't try all that hard. That does seem very fast. How many did you chrono?
I'm shooting 215 grain berger hybrids at 2950 with mine.
Title: Re: 300 rum
Post by: GoldTip on September 05, 2013, 02:48:24 PM: I would agree that seems quite fast to me. Am not sure of the load, but I know my buddy pushes the envelope in most of his reloading and he has 180gr swift scirocco's coming out the pipe of 300rum at just a hair over 3200fps.
Title: Re: 300 rum
Post by: Killmore on September 05, 2013, 03:42:48 PM: Try a different crony, I shoot factory Remington 180 gr scirroco.s at 3295 fps .
Title: Re: 300 rum
Post by: MtnMuley on September 05, 2013, 04:13:16 PM: You're not getting 3400 fps with that load. Chrony's screwed up. I get 3400 out of 175 Bergers with 98.5 Retumbo. I can't remember what I get off the top of my head with the 190's and 210's with retumbo, but it's no where near 3400. :twocents:
Title: Re: 300 rum
Post by: longrangekiller on September 05, 2013, 04:59:37 PM: Ok thanks guys I was pretty dumb founded when I seen 3400 4 out of 5 rounds ill have to look into using a diffrent crony and figure it out
Title: Re: 300 rum
Post by: Jonathan_S on September 05, 2013, 05:22:56 PM: whew 3400 would probably blow up in your face.

200s shoot around 2980-3000
Title: Re: 300 rum
Post by: Alan K on September 05, 2013, 05:31:07 PM: That's my exact load, I'm getting 3090-3115 fps with a 26" barrel.

Just happened to shoot .7 MOA on that even grain interval while working up the load and called it good for the year since I got started late this summer. Plan to adjust it a bit either way and see if I can get it tightened up even further.
Title: Re: 300 rum
Post by: higunner on September 09, 2013, 02:59:52 PM: 200 grain A/B's 93 grains of Retumbo 2950 f.p.s. BAD Chronograph
Title: Re: 300 rum
Post by: Bill W on September 09, 2013, 03:01:43 PM: I'd read the manual to see what the correct spacing for the screen should be and then measure them.
Title: Re: 300 rum
Post by: Easy-E on September 09, 2013, 03:50:59 PM: I'd suspect that you'd have a hard time extracting the brass after firing if you indeed were that far off. But, while you're checking things you might also check the settings on your powder scale and bullet weights. Not sure where your load data comes from but some sources also have a % of case capacity (load density). If it says your load should fill the case 85% and youre compressing the powder when seating you could be loading hot loads. Also, weigh those bullets. You could push a lighter bullet that fast for sure.

Cheers!
Title: Re: 300 rum
Post by: snowpack on September 09, 2013, 04:14:36 PM: How close was your muzzle to the crono? I got all kinds of weird readings once, then moved the crono about 5 more feet away and it started to read where I expected it.
Title: Re: 300 rum
Post by: longrangekiller on September 10, 2013, 09:56:23 AM: The crony was about 15 -20 feet away I have used 2 diffrent scales I think it's just the crony thanks for all the help guys

Zach
Title: Re: 300 rum
Post by: DUB C! on September 23, 2013, 05:17:58 PM: Was your crony in the direct sun? I have had mixed readings with different brands of cronys in direct sunlight... :twocents: