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Alternative for 300 win to Retumbo

 
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  #22  
Old 02-11-2013, 09:34 AM
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Re: Alternative for 300 win to Retumbo

For whoever posted this, FYI the Speer 180 btsp is a lot closer in design (length of bearing surface, boattail length, jacket thickness, etc...) to the 180 Nosler BT than the E-tip, the E-tip is basically a barnes tipped triple shock without pressure rings with a .060" jump the E-tip has about twice the initial start press of a ballist tip, don't believe me, get someone to quickload that. I have interchanged data from the Speer manual before with Nosler bullets with no issues, when they publish these books, they know you may not be using the exact bullet listed but it gives you A PLACE TO START.
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  #23  
Old 02-11-2013, 10:20 AM
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Re: Alternative for 300 win to Retumbo

Quote:
Originally Posted by Lefty7mmstw View Post
Not trying to be a party pooper man, just saying you are likely a bit warm. I'd rather see everyone running safe stuff out there. I'd back off to 3150 fps(whatever that lands for charge) and work your seating depth a bit to re-tune. Another way to look at your load is the number of firings you get before your brass goes. Your primer pockets should be good more than three firings with safe loads.
I know they are a bit warm. I dont think one grain will be enough in extra pressure to make a difference. This gun is a hunter. I shot 5 rounds out of it last year. My brass lasts atleast 4 reloads before i anneal them and even if they didnt, oh well. With the amount of shooting I do with this gun it will last a really long time.

I just might load some shells for my gun at 70 to see what the velocity changes to. I know the group went from 1.25ish to 3/4 with the extra powder so I like the accuracy I'm getting.

I have bullet pushed out as far as I can and I'm still a ways from the lands. That's the.bad thing about the Browning's, the magazine box limits how far out you can seat the bullet.
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  #24  
Old 02-11-2013, 10:35 AM
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Re: Alternative for 300 win to Retumbo

Marble, what is your OAL if you don't mind me asking?
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  #25  
Old 02-11-2013, 03:45 PM
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Re: Alternative for 300 win to Retumbo

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Originally Posted by backwoods83 View Post
Marble, what is your OAL if you don't mind me asking?
I dont know off the top of my head. My calipers are with my reloading bench so I will head over there today or tomorrow and measure.

I have 3 A bolts. 7mm rem mag, 300wm and 7-08 AI. Generally when I am developing a load I will seat them out as far as the magazine allows and then check to see how they fit in the chamber. If I recall correctly, I'm about .0020 of the lands. I have never had a reload for the guns where I couldn't seat the bullet to the end of the magazine.

I'll head over to the shop hopefully today and get back to you.
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  #26  
Old 02-15-2013, 11:40 PM
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Re: Alternative for 300 win to Retumbo

OAL is 3.368/7. I measured a few and they were within a hundredth of each other. I also run them through a hornady concentricity tool.
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  #27  
Old 02-18-2013, 01:42 AM
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Re: Alternative for 300 win to Retumbo

So I just loaded 8 rounds with RL-22 2 each 73-75.5 at 1 gr each to 75 and then 75.5 end. They are all .009 off the LANs. Pill is Berger 185 with 215 primers.
Not sure when I can shoot them but I at least have them loaded now.
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