Search:

If you insert your stripped bolt without a case you should feel a wee bit of slack when moving it fwds and backwards off the locking lugs - I like about 4 thou on my custom guns. This wee bit of...

If you don't have a gauge - I have a Sinclair 40 degree one - the best way is to remove the striker/firing pin assembly from your bolt and with the bare remainder chamber your cases. This way you can...

Yeah, if your die is only sizing the body and not quite reaching the shoulder what will happen is the shoulder will actually move fwd and the situation is made worse. The best analogy is if you wrap...

Yep, cannot ignore enlarged PPs :-)

Normally when I fire form I use a forming load and second rate projectiles. After the first firing I run my normal load (or do serious load development). But...

Have you got a gauge to measure to the shoulder datum point?
The ones that are tight to chamber are they similarly tight to extract?

With my AI (6.5SM AI) I find with the 40 dgree shoulder and the only slight case taper I go around 5 firings b4 chambering is a concern and FLS becomes required. Virtually zero brass flow.

Re base...

I use Lyman M dies for belling the neck to let flat base projectiles start nice and easy,
Have 4 of them to cover my different cals.

As the gun operator if you cannot shoot close up how can you shoot better further out? :)

Bryan Litz covers why in one of his books. I cannot remember the exact reasoning - it took several sentences to explain. A point he also makes is the other way around - a tight group at 100 yds...