I lost 1 case to a separation when forming 257ai. I wet a patch with a light amount of oil and used a moderate load and all formed fine. The lubed chamber helps keep the case from gripping and holding the chamber wall. I normally never have lube in the chamber.
Perhaps a larger false shoulder...
Congrats on the new rifle. Great cartridge. I have a Mauser 98 in 7x57 but it was throated for 175 rn bullets and just refused to shoot pointed bullets so I rebarreled it. It now shoots .3 with Barnes 120 gr tsx and reloder 16. It also liked reloder 17, H414, and h100v powders. It has since...
Ordered mine but am told by a friend to get set for a disappointment. He says not that much new data except for nosler cartridges. If so, I may not order another for many years.
Some other things to point out here is it appears the cup core bullets shed a lot of weight and that lost weight is lead in the meat.
I hunted with Hornady interlocks and nosler spitzers for many years and recovered a number of bullets and found a lot of jacket separations and weight loss...
I did a lot of testing with 4166, 4451 in 243ai, 257ai, 250ai, and 7x57ai (yeah, I know I have an ai issue). Without a long story, I found accuracy with these powders improved as I approached my max load in every cartridge and my es sd numbers improved as well. I was testing mainly in early...
Is there any plan for a future 25 caliber Varmageddon bullet? Perhaps 75 gr. They completely skipped it in the lineup. Many 250 savage, 257 bobs out there and the 25 creedmoor is coming one day. Would love to use my 257ai for groundhogs with Nosler.