We are starting load development, 7MMx57 AI.
Printed From: The BaitShop
Category: FireArms, et cetera
Forum Name: Metallic Cartridge Handloading and Bullet Casting
Forum Description: Discuss reloading, bullet casting etc. here. We take no responsibility for the safety or validity of the loads mentioned in this forum. Start low and work up to what is safe in YOUR firearm!
URL: http://www.baitshopboyz.com/forum_posts.asp?TID=27966
Printed Date: 26 March 2026 at 16:25
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: We are starting load development, 7MMx57 AI.
Posted By: d4570
Subject: We are starting load development, 7MMx57 AI.
Date Posted: 23 August 2023 at 11:45
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I'm still fire-forming the AI part, but we have enough brass to start loads. I want to keep them around 2700, or 2800 fps Similar to the factory 7x57 in a 140-ish bullet. It's for a small framed 14-year-old girl. She has been shooting for 8 years and is very good. But does not enjoy heavy recoil, is not afraid of it but does not like it. She is shooting a Ruger American re-barreled with a Shaw barrel 1x7 twist, 22". This is the first try. She is shooting off a bench with sandbags at 100 yards.  LRX 145 gr best of 3 loads. The recoil with Big Game Powder has noticeably more recoil.  ttsx 140 gr best of 3 loads. Check out the fire-forming target 20 shots in an inch and a half. 
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