Recent content by ch11x
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Custom AR barrel question
Yes this is nit-picking but any other barrel makers/finishers drill AR barrel gas ports centered in the valley/groove? I've had 3 Krieger AR barrels and they were all centered in the groove. They were 4R so most likely 5R+ rifling is a limiting factor and possibly unavoidable? Also would like...- ch11x
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- Forum: Semi-Automatic Rifles
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300 Norma Mag
I'd be happy with those velocities and performance out of my 24" similar setup...though it 9.25 vs 10. The info from Proof for chamber is they used JGS 3818 CIP reamer with 0.215 freebore. Probably optimized for 230 but they say it's good from 208 up to 230...I'll be shooting 215 and lighter...- ch11x
- Post #85
- Forum: Reloading Depot
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300 Norma Mag
Nice build, do you have any 215 velocity data for that Proof 24" barrel and is it 9.25 twist? Interesting...any pics of the fire formed brass? Wondering if quantifiable brass life extension in this cartridge for work involved. What do you think about a 180 in this cartridge?- ch11x
- Post #82
- Forum: Reloading Depot
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300 Norma Mag
Waiting for a Proof TAC II 300 Norma build (24" proof bull, defiance action)...Here is some factory 215gr ammo. ABM on the left and Nexus on the right. Note the Lapua headstamp on the ABM. Also the ABM is seated out noticeably further. I'm thinking of trying the 180gr elite hunter in this...- ch11x
- Post #79
- Forum: Reloading Depot
