A custom barrel can be chambered to a dummy rounds COL that you supply.
Underwood list 21 BHN on there website. [ATTACH] 92 2 6 is hard cast @ bhn 15.
There are 2 ways to get to bhn 21.
2. Oven heat...
See Varmint Al , fitted neck cases. https://www.varmintal.com/arelo.htm#Fitted_Necks
Slow powder, light bullet, and starting to midrange loads...
If running a maximum load with the Hornady brass , i would compare the weight of the Lapua to Hornady. If the Lapua is heavier, reduce the load...
Yes it is. The SAAMI drawing has
A good question for a gunsmith. Not I.
SAAMI - looks like 1.812" Then tapers from .224" diameter to 1.857"
Freebore .025" SAAMI ?
Load a long COL bullet, nose first, no powder and jam it into the rifling.
Doing this may result in a stuck dummy round or broke bolt. I took...
Can it apply 35 to over 100 pounds to seat . Neck tension from .002" to .005"
I guess not.
Brass has a memory and after the expander is...
Sierra 69 gr tipped & Hormady 68 gr match bullets @ 2.260 COL. At this COL, both should chamber.
The ogive is in front of the black line,...
Came from Remington that way, many years ago. Was a 222 Rem.
A 9 twist should be good for up to 68, 69 gr bullets. The plastic tip bullets are longer then the hollow points. There is a lot of bullet...
A 2 oz trigger may not stay cocked with hard , fast bolt closing.
The ogive should not be seated below the case neck. This is where the .224" diameter gets smaller.
What is the twist rate of the new barrel?
[ATTACH] Search Google Images using "sectioned rifle Barrel photo erosion"
http://forum.accurateshooter.com/threads/erosion-from-blowback-on-necks.3938810/page-2 post #24 GOOGLE-IMAGES-
Avoid plates with pock marks at any & all distances. [ATTACH]
My 8" target.
Good to know ty. https://nightforceoptics.com/zero-stop
A RCBS Ram prime unit is the best way to fully seat primers for me....
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