So I bought some 90g speer TNT and some PPV. According to Speer website max load is 33.2 and starting is 30.1g. So naturally I was a risk taker and started at 30.4g of PPV, 90g Speer TNT, CCI 450, COAL 2.195. This is Hornady Brass on its 5th load. Ive primarily used 110g Maker Trex and 110g Lehigh Defense Controlled Chaos previously in this brass with zero issues. Im shooting out of a 12" Krieger from precision firearms.
First 4 rounds 30.4g had velocities 2353,2311,2336,2385 about a 1.5 inch group and in the box picture they are the primers on the furthest left.
Second load 4 rounds, first round blew the brass apart at a chrono velocity of 2309. Primer looked fine. Velocity was noticeably less then the previous 4 rounds. I figured this was some sort of anomaly with the used brass being that it was such a low load and the velocities were as I expected them to be so I continued shooting. The remaining 3 loads chronoed at 2339,2361,2333.
Next load is 31.0. Second shot blew the brass apart again so day over for my Grendel. The first velocity was 2413 and the blown case was 2300.
Here are some pictures of the brass. The primer pockets were still tight when loaded and I have never loaded these hot. I use redding full length resizing dies.
First 4 rounds 30.4g had velocities 2353,2311,2336,2385 about a 1.5 inch group and in the box picture they are the primers on the furthest left.
Second load 4 rounds, first round blew the brass apart at a chrono velocity of 2309. Primer looked fine. Velocity was noticeably less then the previous 4 rounds. I figured this was some sort of anomaly with the used brass being that it was such a low load and the velocities were as I expected them to be so I continued shooting. The remaining 3 loads chronoed at 2339,2361,2333.
Next load is 31.0. Second shot blew the brass apart again so day over for my Grendel. The first velocity was 2413 and the blown case was 2300.
Here are some pictures of the brass. The primer pockets were still tight when loaded and I have never loaded these hot. I use redding full length resizing dies.
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