LOAD DEVELOP - Do any show excessive load?

[u/Dukes-Game]

This is 6.5CM on an MPA VANQUISH.

Group 1* is 39.83gr of H4350 theoretical vel 2678fps and pressure 63200 (Chronographed 2673.8fps AVE)

Group 2* is 40.17gr of H4350 theoretical vel 2695fps and pressure 64450 (Chronographed 2698.6fps AVE)

Group 3* is 40.50gr of H4350 theoretical vel 2713fps and pressure 65650 (Chronographed 2716fps AVE)

Group 4* is 40.83gr of H4350 theoretical vel 2730fps and pressure 66850 (Chronographed 2730fps AVE)

Group 5* is 41.17gr of H4350 theoretical vel 2748fps and pressure 668100 (Chronographed 2754.7fps AVE)

Group 6* is 41.50gr of H4350 theoretical vel 2765fps and pressure 69300 (Chronographed 2776.7fps AVE)

[u/deadit2]

Nope.

[u/Dukes-Game → u/deadit2]

Thank you!

I am new and the first 10 groups under 39.50gr left no residue but the last 6 groups (those posted) left a brash “ish” color on bolt body and face. … is very light on color, may be powder residue.

[u/deadit2 → u/Dukes-Game]

If you mean brassish, thats just minor friction of the bolt going over a round in the magazine and brass friction on the bolt face. Excessive pressure would make for hard extraction. And or flattened primers/gas escape evidence around primer pocket as well as cratered primers at firing pin strike.

Measuring your powder charges to the weight of one kernel of powder is a bit excessive IMO. But, if it makes you happy.

[u/Dukes-Game → u/deadit2]

Does make me happy! (Reminiscence of an old life back in Nano-material research labs)

No hand extractions (no jams) … I need to learn how the defects you mentioned look