AM, immediate apology for giving of offense. It was not intended. I have reread my posts and realize that I let irritation into the tone of my words. Please, no offense meant. See below for some further explaination; facts, thoughts, and emotions.
GT Garwood and DDA have both measured the MOI of many shotguns. In my opinion the practice has produced interesting data and interesting facts about shotguns.
GT measured MOI at CG (center of gravity) with a torsional pendulum and multiplied the MOI by 1000 to produce three place whole numbers as he felt people related to them better than to small decimal numbers. I measure MOI at CG with a constant torque turntable and multiply by 10 to produce (mostly) single digit numbers which I call unmounted swing effort. It is my hope that people will be less intimidated by "swing effort" than by "moment of inertia." My unmounted swing effort of 1.5 for a typical Brit game gun is equal to GT's 150. I extended the use of MOI by calculating the MOI at butt as a useful indicator for "mounted swing effort." I'm not aware of GT doing this, although I'm sure he was capable of doing it.
I think DDA was scolding me for not making a more complete explanation of COG and MOI for the original poster.
AM, no intent to "scold" you. Mild irritation at GT for a statement I consider likely to lead people to untruths concerning the role of balance. Seems to me that GT was quite surprised at the general apathy in the UK toward his application of MOI to gun handling. For me, I'm astonished that MOI wasn't a standard specification for guns by 1900.
I don't think he was disputing GT Garwood's shotgun knowledge.
The man's knowledge was encyclopedic and he could write. To me, it is a crying shame he wasn't more widely distributed in the USA and paid more attention to in the UK. I would have saved me a lot of work.
I think you read his comment on McIntosh correctly and as he meant it.
Once, and once only, I tried (in all humility) to have a conversation with MM about gun handling. He summarily informed me that he already knew all there was to know about gun handling and, further, it was utterly impossible that I would ever contribute anything to gun knowledge. Yes, you are correct, and I did mean it. And, I do apologize for the typo of the double "n" in his name.
DDA
