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.338 ELR-capable projectiles, side-by-side

 
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  #1  
Old 12-21-2013, 04:30 PM
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.338 ELR-capable projectiles, side-by-side

While I have been waiting for my 338 NM build to complete, I have accumulated a number of "prospective" ELR-capable projectiles to test. I've been thinking about taking a side-by-side pic for a while and finally did.

The projectiles are placed from lowest weight to highest, left to right, with the associated boxes (and projectile ID) top to bottom.

Notes:

1. Neither the Dynamic Research nor GSC projectiles will stand straight on their own - so the ugly tape-in-place treatment.
2. The first projectile, Hornady 225, is for fire forming only. [I had planned on an Improved version of the 338 NM at one point and purchased them at that time.] So just disregard in re "ELR-capable".
3. The "marks" near the tip of the Berger are what appear to be from water (as received) - water spots. They do not wipe off and I prefer showing exactly what came out of the box.

Yes, I plan on doing a lot of testing.
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.338 ELR-capable projectiles, side-by-side-338-projectile-comparo.jpg  
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Old 12-21-2013, 08:19 PM
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Re: .338 ELR-capable projectiles, side-by-side

Just curious what testing will entail?

Actualvs claimed BC?
trans stability?
operating envelope?
expansion tests?

Looking forward to you results.
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Old 12-21-2013, 08:41 PM
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Re: .338 ELR-capable projectiles, side-by-side

Quote:
Originally Posted by Rockfish Dave View Post
Just curious what testing will entail?

Actual vs claimed BC?
trans stability?
operating envelope?
expansion tests?

Looking forward to your results.
Sorry, none of the above (not equipped for such testing). Simple stuff like grouping, drop, and apparent stability (i.e., round holes). I'm a fair weather shooter, so I don't expect to get anything serious done before the Spring - assuming no more major delays with my rifle.
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Old 12-22-2013, 07:32 AM
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Re: .338 ELR-capable projectiles, side-by-side

Morning just curious did you ever sell your 338 Norma 40 degree imp reamer and gauges? I saw them awhile back thought you may still have.

Thanks

Jeff

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Old 12-22-2013, 02:20 PM
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Re: .338 ELR-capable projectiles, side-by-side

Quote:
Originally Posted by cowboywhorses View Post
Morning just curious did you ever sell your 338 Norma 40 degree imp reamer and gauges? I saw them awhile back thought you may still have.

Thanks

Jeff

Sold several months ago.
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Old 12-24-2013, 07:43 AM
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Re: .338 ELR-capable projectiles, side-by-side

Testing so many different bullets, how do you decide how deep to cut the throat?
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Old 12-24-2013, 05:28 PM
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Re: .338 ELR-capable projectiles, side-by-side

Quote:
Originally Posted by Mike 338 View Post
Testing so many different bullets, how do you decide how deep to cut the throat?
The spec (for my gunsmith) reads, "NOTE: Throat both barrels for zero jump/jam at COAL = 3.650 with Berger #33106 (Hybrid OTM Tactical 300 gr)." That is what I expect to end up with. [The COAL is to fit my AI 338 LM CIP mags. I provided him one mag and cartridge brass and the Bergers. He is also building me custom dies to match.]

My barrels will be nitrided and I will test from there. I want the barrels nitrided before doing any testing.

One of the barrels is a "salvage" rechamber job and will be used only for fire forming.

Depending on how the testing goes I will purchase additional barrels - possibly changing the throating at that time. I am trying to keep the initial overall rifle weight down to just under 17# to allow 1000 yard NBRSA competition - the "good" barrel is only 26" and fluted.

Going forward I will swap barrels to shoot ELR - longer barrels, possibly gain twist, etc. I may well attempt to engage Defensive Edge to go Shawn's +P. [I say "attempt" because I don't know if he'll be willing to spend the time to +P a 338 NM.]

Probably too much info. Its been typed so...
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