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Reloder 17 and throats

puppet

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Minuteman
Mar 16, 2018
21
5
Is it true that reloder 17 is hard on throats ? In 6.5Creedmoors or other's
I louded up two 140vld with 42.5 r17 got 2940/2942 m.v. In 28" criterion 1-8 brass looked absolutely fine !
 
Throat wear is more dictated by how fast and furious you want to shoot the gun, The throat area will have the hottest temps of anywhere in the barrel, so by continually firing a warm barrel, material gets worn away faster. Not a fair comparison, but think of a cutting torch, pouring air to an area before metal is hot is futile, but once red, it cuts in a hurry.
There is always talk of higher nitro glycerin content powders causing premature throat erosion, RL 17, VV N 500 series etc.. Thing is, for every finger pointed, there is one on the other side saying no. Plus getting a fair comparison almost impossible.
I'd say use it and make your own assumption.
 
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I run 42.5gr of rl17 behind 140smk 140hpbt-m and 143eldx. Primer pockets will loosen up on 4th or 5th firing, atleast for me. I see 2750-2810fps depending on bullet out of a 20” barrel. After roughly 950 rounds I’m seeing about .06” of erosion according to my data.